Who We Are

Admin Staff

Meet Our Administration

Peter S. Glassman, DVM

peter-glassman-dvmI graduated from the Cornell veterinary college in 1978 and in June of that year began my veterinary career at Friendship. This is the only veterinary job I’ve ever had. I took over the practice from Harvey Cowan in 1982. Harvey was a wonderful vet who taught me the importance of providing uncompromised quality health-care and quality customer service.

I grew up in Washington and went to Sidwell Friends School. I became interested in veterinary medicine because I loved to ride horses and showed throughout Virginia and the east coast as a junior. I have three sons and a wonderful wife, Denise, and two dogs, Brodie (a golden retriever) and Willie (an English Cocker). My oldest son, Mat, completed his surgical residency and joined the Friendship team as Chief of Surgery in July of 2011. I am very proud and excited to be working along side of him.

I enjoy every minute of my time at Friendship. While I enjoy being Director and helping to manage a large animal hospital, I get most enjoyment out of doing surgery and working with the great staff at Friendship. I am very proud of the outstanding team of over one hundred professionals that provide exceptional service to you and your companions. I enjoy all the time that I spend with pet owners and their furry friends.

Kieran Mara
Chief Operating Officer

kieran-maraI joined the Friendship family in January of 2000, after several years outside of the veterinary world in corporate management. My original plan was to stay for just a few months while I decided my next career move. Months turned into years because I fell in love with the hospital. In my role, I oversee hospital operations, and budget and strategic planning. I also work in conjunction with the managers on various projects and recruit all of the talented veterinarians we have on our team. I enjoy being able to make a difference every day in the lives of our patients, our clients, and our team members.

In the Fall of 2001, I met my wife, Caitie, at Friendship, so it even further cemented how special this place is to me. We were married in 2007 in Toronto (the first of three weddings to each other!). We live in Frederick, MD, and have three wonderful and energetic children – a son, Cormac, born in 2010, and twins, Brigid and Eamon, born in 2011. In my spare time, I love to play with the kids (building endless Lego sets) and watch bad reality TV with my wife.

We also have three wonderful dogs, Penny, a pug rescued from MidAtlantic Pug Rescue, Lola, a Chihuahua whose owner no longer wanted her, Stella, a Jack Russell Terrier who was abandoned at the hospital and Crosby a Golden Retriever. We have three cats, all adopted domestic short hairs, Mittens, Spirochete and Yoshimi, two guinea pigs, Duncan and Donut, and fish.

Tanya Boris-Cass, RVT
Specialty/ER Practice Manager

tanya-boris-cassI was born and raised in a small town on the Jersey Shore. I attended the University of South Carolina, and earned a bachelor’s degree in Biology. In my time away from Friendship, I enjoy spending time with my husband Larry and daughter Madeline, competing in triathlons, and eating great food.  We are currently without pets, but are searching for that perfect little puppy.

Working at Friendship has been a great experience. I have been here since May of 2003.  I came to FHA a year after moving to the DC area in hopes of gaining experience for my vet school application. I started as an ICU technician. I then had the opportunity to work in internal medicine, oncology, surgery, dentistry, and in various management roles.  Unfortunately, vet school didn’t work out, but my work as a veterinary technician has been very fulfilling.

Sara Crosman
Communications & Client Advocacy Manager

sara-crosmanI grew up in the Philadelphia suburbs where I was always surrounded by pets.  Dogs, cats, birds, fish, hamsters, guinea pigs – you name it!  A career in the veterinary world almost seemed inevitable.

I graduated from Penn State (We are!) where I received my degree in Public Relations and Advertising, with a minor in Sociology.  After graduation, I spent 3 years at an interactive marketing agency in New York, where my clients ranged from HBO, Miramax, and The Weinstein Company, to Penguin Group and Dewars.  In 2009 I relocated to the DC area. After a year of odd jobs, I settled down at Friendship in the Client Care department.  Not long after, I joined the administrative team, working as the Executive Assistant to the Hospital Administrator/COO.  From there I grew into the role of Communications and Client Advocacy Manager.  I’ve been extremely fortunate to have found my niche in the veterinary community.

In my spare time I can be found trying to relax with my husband while also keeping up with the energy of our two boys.  We share our home with a high-maintenance orange tabby named Sir Paul McCatney, a sweet lady kitty named George and a lazy bearded dragon we call Beardie.

Scott Fairley
Human Resources Manager

scott-fairleyI grew up in Carroll County, and have spent most of my life living in Maryland. I graduated from the University of Maryland with an undergraduate degree in English and a Master’s in Curriculum and Instruction. I enjoyed being a teacher in Montgomery County before transitioning into management and eventually Human Resources. I am passionate about supporting organizations and the staff members that make them successful. To be part of a team that supports families in the local community is an honor.

I currently live in Frederick, MD with my wife Chelsea who is an archivist with the Library of Congress. I have two pets. An inquisitive Yorkie named Watson and his bashful cat brother Shaggy. I enjoy spending my free time traveling, visiting amusement parks, relaxing with my wife, and rooting for the Capitals, Ravens, and Orioles.

Kathy Leef
Veterinary Relations Manager

I have signed on to Friendship in the newly created role of Veterinary Relations Manager.  I was the key representative from Henry Schein Animal Health and had Friendship as an account for the last 15 years.

I look forward to my work at FHA and creating good will between our referring veterinarians and our specialty services.


Jennifer Mattioli
Primary Care Practice Manager

jennifermattioliGrowing up in the nearby Four Corners neighborhood of Silver Spring, MD, I have always had an affinity for animals- and have shared my home with cats, dogs, a lop-eared rabbit, mice, hamsters, guinea pigs, gerbils, rats (a personal favorite), and of course, fish.

By the age of 12, I’d begun volunteering at an animal hospital as part of a mentorship program through my school. I began my employment at Friendship Hospital for Animals as a veterinary assistant in 1991, and held a multitude of positions there over the course of the next 14 years. Thereafter, I moved into Practice Management locally.

I was thrilled by the opportunity to return to Friendship as Practice Manager for the Primary Care Department. Friendship has long been a sort of second home to me- I’ve personally witnessed the growth and evolution of the practice over the last twenty-plus years. The compassion has remained consistent throughout the years.

My husband and I are active supporters of numerous local and national animal welfare and rescue organizations. We recently adopted a CityDog Rescue boxer-mix named Clara, who is a member of the K9 Corps at Historic Congressional Cemetery on Capitol Hill. We also regularly trip over four rescue cats (including a beautiful tripod girl), who work tirelessly to keep our home free
from a rather serious toy mouse infestation.

I studied Zoology at the University of Maryland before switching to Operatic Voice Performance at the Benjamin T. Rome School of Music at the Catholic University of America. My trajectory has been more along the lines of singing in the car rather than the Met, but I’ve still enjoyed occasionally performing with a local chamber choir ensemble. In my freetime, I also enjoy crochetting, gardening, trying out new vegetarian dishes, and watching our own Washington Capitals (“Let’s Go Caps!”).

Marty Rogers
IT Manager

marty-rogersI started at Friendship the summer of 2013.  I’ve worked in IT for over 15 years in various corporate and non profit organizations and enjoy the variety of challenges that present themselves here at the hospital.

I moved from DC to Chevy Chase in 1994 and live there with my wife, two high school kids, and two dogs we got from the shelter 5 years ago.  Recently my spare time is spent being a hockey dad, fishing with my son on the bay, and hoping my daughter’s zest for life continues to rub off on me.

Mickey Sigsbee
Facilities Manager

 I grew up in Lake George, NY but moved to Maryland for high school and college, graduating from Rockville High and Garrett College where I studied Forestry.

I ran a printing press for a couple decades and then moved into building maintenance.

I live in Kensington, MD with my wife and our 20 year old son.  I enjoy cooking, ping pong, darts, reading, boating, fishing, and fixing things. At this point in time we have just one cat, Mo, who is hopelessly devoted to me.

Kyle Trainer
Inventory and Laboratory Manager

I started at Friendship on November 19, 2004.  I have worked here as an Animal Care Specialist, an Inventory Assistant and at my current position Inventory Manager.

Stacie Ward
Accounting & Benefits Manager

stacie-wardA D.C. native, I joined FHA in 2004 after spending several years working in accounting and restaurant management. I currently live in Ellicott City, MD with my son Robby and daughter Grace. I have a Beagle mix named Rocky, a Whoodle named Lucy, and I love football season (Go Skins!!).


Meg Yagatich, LVT
Talent Development Manager

Being part of a military family, I moved a lot as kid. The one constant, no matter where we lived, was our pets. My parents always made every effort to show me how we can care for animals of all sorts, which I credit for my commitment to veterinary care today. I took my passion for animals to North Carolina State University where I earned a Bachelor’s degree in Zoology with a minor in Environmental Science. Shortly after graduation, I moved to Maryland and began my vet med journey.

I spent a few years at Banfield and joined  the FHA family in 2013. When I started as a veterinary technician and immediately felt at home. I took every opportunity to learn more and develop my skills for patient care and became a licensed tech in 2015. Trusted with more responsibility as a supervisor, I pushed myself and everyone around me to live up to Friendship’s mission of providing the best patient care possible. I am grateful to continue that work in my current position as Talent Development Manager, where I strive to provide the support each department and employee needs to do their best work while fostering Friendship’s core values.

I currently live in Germantown with my husband, William, and two kids, Brody and Griffin. We share our home, beds and hearts with our fur family, two dogs, Drifter and Tiny, and two cats, Sena and Splotch. In my downtime, I enjoy crafting, running and outdoor adventuring with family and friends.

Friendship provides state of the art, comprehensive services for our clients and patients. But, more than that, we provide a caring team who understands the unique human-animal bond. View Our Services