Meet Our Doctors

Dr. Kevin Alvine

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  • Lander Veterinary Board Secretary
  • QMS Division Management
  • Computer Software Development
  • Small Ruminants & Camelids

A Central Valley native, I grew up north of Turlock in the small agricultural community of Hughson. At the University of California, Davis, I received my Bachelor’s degree in Animal Science and my DVM from the University of California, School of Veterinary Medicine. Upon graduation, I joined Lander Vet and have been a part of the staff family for fourteen years.

I chose veterinary medicine as my profession because I love the practice of medicine and working with animals to help my clients. Other responsibilities at Lander Vet include developing and modifying computer software for billing, point of sale, and associated programs.

My free time passion centers around my two wonderful children, Quinn and Rory. Backpacking, hiking, running, and photography are among my other interests.

Dr. Michael Betts

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  • Associate Veterinarian
  • Since 2006
  • Oregon State University

Born and raised in Oregon, I received my Bachelor’s degree in Animal Science at Oregon State University – Go Beavers! Then it was off to veterinary school at Ross University on the island of St. Kitts. My clinical rotation was completed at the University of Illinois and there received my DVM degree. I’ve been on staff here at Lander Veterinary Clinic since graduating.

As a veterinarian at Lander, I most enjoy being outdoors and working with cows (The “Mothers of Civilization” – sent by God) and helping our dairymen, who are the most down-to-earth people around! It’s the perfect combination of all the things I love to do in the fascinating world of animal medicine.

Spending quality time with my wife, Lynette, (also a veterinarian), and our two daughters, Deryn and Delilah is only paused for a bit during college football season… attention then turns solely to my beloved OSU Beavers!

Dr. Patrick Brinson

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  • Lander Veterinary Partner
  • Beef & Dairy Reproduction
  • Cow-Calf & Stocker Production Management and Medicine
  • Dairy Diagnostics Managing Partner

Originally from North Carolina, I received my Bachelor’s degree in Animal Science and my DVM from North Carolina State University in 2011 and 2015 respectively. Following graduation, I joined the great group of veterinarians at Lander in the summer of 2015. I went back to school while continuing to work full time and completed a dual degree program in 2020 with a Master’s in Agricultural Economics and an MBA from Purdue University and Indiana University respectively.

Growing up in a rural central North Carolina town, I was surrounded by agriculture, although not a large number of cattle. I enjoy being around dairy and beef producers, their farm staff, and working with cattle. It’s very fulfilling to help our producers provide quality, nutritious products to the consumers. I enjoy data management and creating new ways to help manage your cattle. I also enjoy working through business-related problems with cost-benefit analysis and partial budgets.

I am happily married to my wife, Jenny, and we have a little boy, Bennett that keeps our hands full most of the time. We also have two dogs, Piper and Raleigh, and a spunky cat named Leroy. In my spare time, I enjoy camping, skiing, hiking, and rooting for the NFL Carolina Panthers and the North Carolina State Wolfpack.

Dr. Edwin G. Fisher

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  • Lander Veterinary Partner
  • Bovine Reproduction
  • DairyComp 305 Records
  • Swine Medicine

Received my Bachelor’s degree in Animal Science from the University of California at Davis and continued with my DVM degree at UC Davis.

Since growing up on a small rural farm in Hughson, California, a few miles north of Turlock here in the Central Valley, I’ve focused on the need for secondary school improvement and student success. Over the past 20 years, I’ve served on many Hughson School District Committees, including Ag Advisory and Career Tech Ed.

My decision to become a veterinarian goes back to my roots in Hughson where I knew as a boy I wanted to be a veterinarian. During my years at UC-Davis, I spent a great deal of time here at Lander Vet where I was mentored by Drs. Ron Terra, Norm La Faunce, and Gary Daley.

The camaraderie and collegiality for over 27 years here at Lander Vet, not only with others vets but with our clients and staff as well, is most appreciated. There’s always a challenge and something new to learn. Watching clients succeed in livestock production and finding solutions to their many challenges is certainly the most rewarding part of our work.

My high school sweetheart, Jenean, and I recently retired after coaching track & field at Hughson Middle and High School levels for 13 years and as meet director for the annual Hughson & Ross Invitationals. My relaxations include backpacking, family vacations with our four children, antique shopping, and conservative principles.


  • American Association of Bovine Practitioners
  • American Veterinary Medical Association
  • California Veterinary Medical Association
  • Graduate of Class 31 in California Agricultural Leadership Program

Dr. Bryan Halteman

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  • Lander Veterinary Partner
  • Dairy Production Medicine
  • Bovine Embryo Transfer
  • Managing Partner & CFO-QMS Division

Originally from Pennsylvania, I received my Associate’s Degree in Wildlife Technology from Penn State University in 1979 and Bachelor of Science degree in Biology at Slippery Rock University in 1982. My Doctorate in Veterinary Medicine was received at the University of California-Davis in 1989. An MBA in Agribusiness was completed at the University of Guelph in 2011.

I’ve practiced at Lander Veterinary Clinic since graduating from UC-Davis in 1989. My interests extend to business and finance, using derivatives (forward contracting, futures and options) to hedge prices for the QMS Division and to offer business management services to Lander Vet clients.

My passion outside the Clinic is directed to Christian international relief and development projects, serving with the Christian Veterinary Mission, Send International and Central Asian Partners to Kenya, Albania, and Kyrgyzstan.

Outdoor activities are my favorite pastimes, especially fishing, softball, photography, camping, and travel. My two daughters, Moriah and Madelyn share my enthusiasm for animals, sports, and travel.


  • Service: AABP Finance Committee; Alternate Delegate to CA Food Animal VMA in the CVMA House of Delegates.

Dr. Lori Lenihan

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  • Lander Veterinary Partner
  • Ultrasound Reproductive & Fetal Sexing
  • Embryo Transfer/OPU
  • Student & Herdsman Training

Born and raised in the Canadian province of Nova Scotia, I received my Bachelor of Science degree in Agriculture from Nova Scotia Agricultural College in 1998. Prior to attending veterinary school, I worked on a dairy farm in Onslow, Nova Scotia milking cows and helping run the dairy. For over two years I was then employed as a pharmaceutical representative for Bimeda-MTC Animal Health.

My Doctorate of Veterinary Medicine was received at the University of Prince Edward Island Atlantic Veterinary College in 2005. Upon graduation, I immediately began practice at Lander Veterinary Clinic. My passion is for everything COW… It’s the reason I moved halfway across the world to work for Lander!

That same passion extends to animal welfare and my back yard is full of rescue animals (ducks, cows, dogs, cats…) I enjoy working as the student coordinator for the Clinic, responsible for setting up externships with students the world over.

Outside of work, I can usually be found participating in some sports event: playing in two soccer leagues, two softball leagues, and have recently become a cycling addict. In between, I enjoy hiking, camping, and social events.


  • Vice-President of the Northern San Joaquin Valley Veterinary Medical Association (NSJVMA).
  • Alternate delegate for the House of Delegates for the CVMA, member of the CVMA, AABP and AVMA.

Dr. Thomas Bauman

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  • Associate Veterinarian
  • Dairy Data Analysis
  • Individual Cow Medicine
  • Sheep & Goat Medicine

Received a Bachelor’s degree in Animal Sciences from the University of California at Davis and completed my Doctor of Veterinary Medicine degree at UC-Davis in 2011.

My focus over the past five years, since joining the staff at Lander Vet, has been the analysis of dairy data, individual cow medicine, sheep and goat medicine, and small-scale agriculture. I really enjoy both agriculture and veterinary medicine. Livestock veterinary practice is the perfect blend of these two interests, which became my primary reason to become a veterinarian.

Working at Lander provides the opportunity to become an integral part of livestock production and work as a team with our livestock producers. Finding practical solutions to the many challenges inherent in livestock production can help contribute to the producer’s success.

In my free time, I enjoy gardening, reading, hiking, and taking care of my very small cattle herd.

Dr. Robert Cherenson

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  • Lander Veterinary Partner
  • Surgery, Immunology
  • Herd Reproductive Management
  • Internal Medicine

Most folks know me as “Dr. Bob”. I’m originally from New Jersey and received my Bachelor’s degree in Animal Science from Rutgers University and DVM degree from Purdue University, College of Veterinary Medicine.

Having worked as a veterinarian here at Lander for over 27 years, I still very much enjoy working with livestock and our great livestock producers. I especially love working outside (on nice days). It brings me back to the days when I worked back East and ran a Jersey dairy farm in Massachusetts before moving to California. Problem-solving now on behalf of my clients is most rewarding.

My focus is on herd reproductive management, surgery, immunology, internal medicine, and overall dairy management. Collaborating with my colleagues on specific dairy issues makes serving a great group of clients very beneficial.

I am married to Lisa, a hospice nurse. We have two young adult children and our first amazing grandchild! I enjoy spending my free time in the great outdoors and nature photography.

  • Currently serve on the National Board of Veterinary Medical Examiners.
  • Previously served on the AVMA’s Council on Education.
  • Graduate of Class 29 in the California Agriculture Leadership Program.

Dr. Ryan Wood

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I grew up in Northwest Ohio, where I received my Bachelor’s Science Degree while double majoring in Animal Science and Biology with a Chemistry minor at the University of Findlay. I attended Lincoln Memorial University College of Veterinary Medicine, where I received my Doctorate of Veterinary Medicine in 2020. I practiced initially in Northern California as a mixed animal veterinarian prior to moving to large animal full-time.

I participated in both 4-H and FFA in which I received both my State and National Awards for my work with our remaining dairy cattle as well as the Registered Cheviot Sheep flock that I started when younger. I exhibited our Registered Holsteins and Registered Cheviots at both county, regional and state shows. While working closely with my grandfather on the dairy and our local veterinarian, my interest in food animal veterinary medicine blossomed. I enjoy working with our food animal producers with herd health, surgery and advanced reproductive practices in small ruminants such as laparascopic artificial insemination, embryo transfer and oocyte pick-up.

In my spare time, I enjoy spending time with my wife and daughter. At the house, we have a registered cheviot sheep flock that was brought in from the Midwest, a horse and chickens as our outdoor animals and then 3 Australian Cattle Dogs, a Border Collie and a cat indoors. The dogs all compete in various sports including frisbee, dock diving, agility, obedience, rally, herding and barnhunt. My wife and I enjoy competing with our dogs together. If there is any time left over, I enjoy lifting weights and playing the saxophone.

Dr. Blaine Melody

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  • Lander Veterinary Clinic Partner
  • Preventative Dairy Medicine and Management Consulting
  • Bilingual Training of Dairy Technicians in English and Spanish
  • Transition Cow Program Auditing and Optimization
  • DairyComp305 Records Analysis
  • National Dairy FARM Program Auditing and Protocol Implementation
  • Lung Ultrasound and Calf Ranch Consulting

I grew up in Illinois and attended the University of Illinois where I received my Bachelor of Science degree in Animal Sciences with a focus on dairy production in 2013. I then completed a summer internship with Prairie State Select Sires prior to attending veterinary school at the University of Wisconsin. Upon graduation in 2017 I worked as an associate veterinarian at a six-doctor dairy clinic in Fond du Lac, Wisconsin before serving as part of the management team for a large dairy enterprise milking 20,000+ cows between Nebraska and Wisconsin, where I gained valuable insight as both veterinarian and producer. I was heavily involved in employee management and training, transition cow management, protocol design, and implementation, and coordinating the other day-to-day activities on the dairy.  I was also incredibly fortunate to spend one month in Puebla, Mexico to study the Spanish language and local culture.

Since moving to California, I’ve been proud to be a small part of the legacy of Lander Veterinary Clinic. I have a great passion for helping our dairy clients identify major management opportunities and help achieve their farm’s individual goals.

Outside of work, I enjoy hiking, rugby, weight-lifting, trying new foods and wine, and enjoying everything California has to offer with my partner, Veronica, and faithful feline, Harley Quinn.

Dr. Tia Simon

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I received my Bachelor of Science degree in Biological Sciences with a minor in Animal Science at North Carolina State University and then continued to earn my DVM at North Carolina State as well.

Growing up in Clayton, North Carolina I always had a passion for taking care of animals, but I didn’t discover my interest in cattle medicine until I started working at the NC State Dairy Education Unit. Having the opportunity to work on a dairy farm and visit various other beef and dairy operations throughout school really solidified my decision in wanting to work with these animals and producers after I graduated.

I joined the Lander team in June of 2020 and have thoroughly enjoyed exploring California and getting to know the local farmers. In my spare time, I enjoy hiking with my dogs Tito and Shirley, camping, working out, and swing dancing.

Dr. Alena Taylor

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I was born and raised in Northern California, and have pursued my passion for veterinary medicine since childhood. Following F.F.A., and many years as a technician in the small and large animal worlds, I decided I wanted to pursue my career in mixed animal practice. I received both my Bachelor’s in Animal Science and my Doctorate of Veterinary Medicine, from the University of California, Davis. While you may see me on a morning herd check or attending to your goats, sheep, and pigs, I also spend two days a week at our small animal (cat/dog) low-cost clinic in Modesto.

My own house is currently occupied by 3 dogs and 3 cats, and will hopefully grow to include room for goats, chickens, pigs, and more! In my spare time, I’ll be off with my husband exploring new landscapes, spending time with family, or trying out a new baked good recipe.

I look forward to building relationships with our wonderful clients and helping to care for your animals-large and small alike.

Thanks for welcoming me to the team!

Dr. Karen Taylor

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Originally from Georgia, I received my Bachelor of Science in Animal Science from Berry College (2013) and my Masters of Science in Animal and Veterinary Sciences from Clemson University (2015). I then attended the University of Georgia College of Veterinary Medicine, graduating with my DVM in 2019.

I have worked at Lander since graduating from vet school and have enjoyed living and working on the west coast. My specific veterinary interests include calf thoracic ultrasound, data analysis, herd health, and transition cow management. I also enjoy working with beef cattle and our small ruminant friends.

Outside of work I enjoy hanging out with my husband Pete and our two dogs. I also enjoy craft beer, wine tasting, cross-stitching, and reading.

Dr. Nathan Yerian

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I was born and raised here in the Central Valley in Tracy, CA. My passion for agriculture stems from years of exhibiting 4-H and FFA projects at the county and state levels, as well as at jackpot shows throughout California. I have worked with and/or exhibited many of our food animal species including pigs, sheep, goats, and cattle, and I take pride in being an advocate for animal agriculture and producing wholesome food products.
I received my Bachelor of Science degree in Animal Science from California State University, Fresno in 2016. I received my Doctorate in Veterinary Medicine from the University of California, Davis in 2020. Following graduation, I joined the team at Lander Veterinary Clinic as an associate veterinarian.

My primary interest is production animal medicine with an emphasis in dairy and beef cattle production. I want to focus on the quality, safety, and sustainability of our food supply and work to maximize production while ensuring both animal welfare and consumer health and safety remain our top priorities.

In my free time, I raise club calves for 4-H and FFA exhibitors, I enjoy camping, fishing, hunting, and target shooting with friends and family.

Dr. Monika Dziuba

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I am originally from Michigan and discovered my interests in dairy medicine from visiting my family’s dairy farm in Poland as a young girl. Since then, I have gained many different experiences in the dairy and animal agricultural industries through receiving my bachelors degree in animal science from Michigan State University with a concentration in production animals in 2019. I graduated from veterinary school at Michigan State University with my DVM and a Masters in Food Safety in 2023.

My interests include dairy production medicine, specifically milk quality and parlor evaluations.

I’m my spare time, I enjoy hiking, playing or watching volleyball, working out, and spending time with my dog, Rucker.

Dr. Elisabeth Regusci

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I was raised in Modesto on my family’s farm. I grew up showing registered dairy cattle at state and national shows. I graduated from Cal Poly, San Luis Obispo in 2019 with a bachelors degree in Dairy Science. At Cal Poly, I was on the dairy judging and dairy challenge teams. I attended veterinary school at Cornell University and graduated in 2023. I had the opportunity to attend the Summer Dairy Institute at Cornell in 2022. Throughout my summers I was able to work on several dairies throughout the U.S.

I enjoy dairy production medicine, especially dairy reproduction, calf health, and data analysis. In my free time I enjoy being outside, cooking, traveling, and spending time with family and friends.

Dr. Audra Stepp

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I was born and raised in Orland, CA, where I developed my love of agriculture and animals. I knew I wanted to be a veterinarian at an early age. Raising beef cattle and dairy heifers to show in 4-H and FFA solidified my decision to pursue a veterinary education. I received my Bachelor’s in Animal Science from West Texas A&M University, where I was a member of the volleyball team. I then received my Doctorate of Veterinary Medicine from Kansas State University in 2022. Following graduation, I was employed at a busy mixed animal clinic in West Texas.

My personal interests include beef and dairy production medicine, herd health, animal welfare, preventative medicine for both small and large animals, and reproduction.

Outside of work, I enjoy traveling and trying new foods with my husband Sterling. I also enjoy attending sporting events, reading, working out, studying history, and spending time with my family, my cat (Vader), and my small herd of Angus cattle.