Dr. Thomas "Patrick" Grogan

Dr. Lyn Johnson

Dr. Mary Williams

Dr. Grogan grew up in the Bartlesville area and graduated from College High School in 1969. He attended Oklahoma State University for three years then transferred to the University of Houston  where he received his undergraduate degree in Marine Sciences.  After working in this field for several years, he pursued other career options leading him to a position as an animal technician at the first animal emergency center to open in Houston Texas. While working at the Houston Animal Emergency Center his admiration for the profession grew and he applied and was accepted to Texas A&M University School of Veterinary Medicine.


After receiving a Doctor of Veterinary Medicine degree in 1979, he returned to Houston to a full-time position in a small animal private practice. He also returned to his part-time job for the Houston Animal Emergency Center but in the capacity of Veterinarian and in charge. What Dr. Pat admires most about the profession is the human/animal bond that exists between his patients and their owners. In 1980 he came home to Bartlesville and opened the Bartlesville Animal Hospital and Boarding Kennel with his wife, Terry.


Dr. Grogan maintains his love for the profession by staying current on the many advances that have occurred in the veterinary profession over the last 35 years. He is an active member of the American Veterinary Medical Association and the Oklahoma Veterinary Medical Association. While raising a family and building the practice, Dr. Grogan became a charter member of the Daybreak Rotary and has been an active member since its inception. Rotary has been a means for Dr. Grogan to give back to the community and to aid in humanitarian efforts worldwide. In 2008 Dr. Grogan was voted “Best Veterinarian in Bartlesville”.


Dr. Grogan and his wife Terry have one daughter (Haley). Haley is married and she and her husband currently reside in Austin, Tx. They also have two dog, three cats and one big Quarter Horse.

Dr. Johnson has always considered Bartlesville her home.  She grew up in Bartlesville until her father’s position with Phillips 66 moved the family first to Germany, then to Sweeny, Texas where she graduated from high school. College took her to Rome, Georgia for two years before returning to Texas A&M University where she earned a B.S. degree in Biomedical Science in 1983.  Dr. Johnson graduated from Texas A&M College of Veterinary Medicine in 1987.


After working in a  small animal practice in Norman, Oklahoma for two years, Dr. Johnson  joined the staff at Bartlesville Animal Hospital in 1989.  She returned to Texas A&M University in 1996 for three years, pursuing graduate studies in animal behavior.  After practicing in Tulsa for a few years, she came back home to Bartlesville and Bartlesville Animal Hospital.


Dr. Johnson is a member of several professional and vocational organizations, including American Veterinary Medical Association, American Veterinary Society of Animal Behavior, Association of Pet Dog Trainers, and multiple dog training clubs.


While still in veterinary school, Dr. Johnson became involved in breeding, training, and showing dogs.  This hobby soon became her passion and lead to her fascination with animal behavior.  She is constantly striving to find ways to handle her patients with the least amount of stress and anxiety.  Her favorite part of veterinary medicine is educating pet owners and helping them understand their pets a little bit better.  Dr. Johnson has a special interest in cats and their diseases, exotic and small caged pets, as well as animal behavior.  She does behavioral consultations, often as part of a house call, treating a wide variety of aggression, anxiety, and destructive problems. She loves speaking to groups, particularly children, about pet care, behavior, and training.  Dr. Johnson currently writes a pet care column for the Bartlesville Examiner-Enterprise.


Dr. Johnson currently shares her home with a pack of Pembroke Welsh Corgis, Shetland Sheepdogs, and a Gordon Setter.  In  a dog career that spans over 25 years, Dr. Johnson and her dogs have earned over 150 titles in obedience, rally, agility, conformation, musical freestyle, and herding.  She currently teaches obedience classes for the Obedience Training Club of Bartlesville and agility classes for Companion Dog School of Tulsa.  She is an agility judge for the United Kennel Club and the Teacup Dog Agility Association.  She is a co-founder of Green Country Pembroke Welsh Corgi Rescue, which rescues and finds homes for an average of 25-30 corgis annually.




Originally from Alberta, Canada, Mary was born in Edmonton and moved to Lethbridge with her family when her father took a faculty position at the University of Lethbridge. She graduated from high school in 2008 and began her undergraduate education at the University of Lethbridge. She then transferred to the University of Saskatchewan in Saskatoon where she completed her pre-veterinary requirements and graduated with a B.S. in Biology in 2012.


Mary began her journey in veterinary medicine at Ross University on the Caribbean island of St. Kitts. After completing the pre-clinical courses on the island, she finished her last year of veterinary school at Oklahoma State University in Stillwater and graduated in May, 2017.


Mary enjoys the variety and excitement that veterinary medicine involves. Every case is a new puzzle to be solved and she is enthusiastic about continuing to learn and grow as a new doctor. She has always had a passion for animals ranging from dogs and cats to horses. She grew up riding horses and is hoping to pick up that hobby again now that she has finished school. Right now she shares her home in Bartlesville with one dog, a yellow lab named Hammer who is a retired duck hunting dog.

Clinic Hours

Monday - Friday: 7:30 AM - 5:30 PM

Saturday: 7:30 AM - 12:00 PM

Closed Sundays



Clinic Phone: 918-333-1122

Clinic Fax: 918-333-8582

Kennel Hours

Monday - Friday: 9:00 AM - 5:30 PM

Saturday: 9:00 AM - 12:00 PM

Saturday: 4:30PM - 5:00PM

Sunday: 4:30 PM - 5:00 PM


Kennel Phone: 918-333-1125

Kennel Fax: 918-333-8582

© Copyright 2016 - Bartlesville Animal Hospital


1055 NE Washington Blvd

Bartlesville, OK 74006