Our Veterinarians

Dr. Molly Allen is board certified in veterinary anesthesiology and pain management.
Molly Allen
DVM, DACVAA
Anesthesiology & Pain Management
Molly Allen
DVM, DACVAA
BluePearl Veterinarian
Board Certified in Veterinary Anesthesia & Analgesia
Anesthesiology & Pain Management
Servicing Locations
Dr. Molly Allen is passionate about local and regional anesthesia, balanced and multimodal techniques to minimize systemic opioid use, and anesthesia for high-risk and critical patients.
  • Diplomate, American College of Veterinary Anesthesia & Analgesia
  • Residency, Veterinary Anesthesia and Pain Management, University of Wisconsin-Madison, WI
  • Internship, Equine Surgery & Anesthesia, Ballarat Veterinary Practice, Miners Rest, Victoria, Australia
  • Doctor of Veterinary Medicine, Tufts University, North Grafton, MA
  • Bachelor of Arts, Biochemistry, Smith College, Northampton, MA
Dr. Allen and her husband have a son, a dog named Madison, and cats Cameron and Charlie. Favorite pastimes include running, camping and hiking.
Dr. Johnathan Arango is board certified in small animal surgery.
Johnattan Arango
DVM, DACVS-SA
Surgery
Johnattan Arango
DVM, DACVS-SA
BluePearl Veterinarian
Board Certified in Veterinary Surgery-Small Animal
Surgery
Servicing Locations
Dr. Johnattan Arango is trained in minimally invasive orthopedic and soft tissue procedures like TPLO, thoracic surgery, oncologic resection and more. He finds fracture repair, wound reconstruction and hemilaminectomies for thoracolumbar disk herniation gratifying to treat.
  • Diplomate, American College of Veterinary Surgeons-Small Animal
  • Resident, Small Animal Surgery, Oklahoma State University, Stillwater
  • Intern, Small Animal Surgery, Hollywood Animal Hospital, Hollywood, FL
  • Intern, Small Animal Medicine & Surgery, Veterinary Medical Center, The Ohio State University, Columbus
  • Doctor of Veterinary Medicine, University of Florida, Gainesville
  • Bachelor of Science, University of Florida, Gainesville
Dr. Arango enjoys all things outdoors with his wife, Kristen, and their four dogs, Siena, Luna, Mason and Eddie, while their cat, Amadeus, holds down the fort at home. He is especially looking forward to skiing more often now that he’s back in the northeast.
Dr. Jessica Byrne is a small animal medicine and surgery intern. She is holding a gray cat.
Jessica Byrne
DVM
Jessica Byrne
DVM
BluePearl Veterinarian
Servicing Locations
Dr. Jessica Byrne is a small animal medicine & surgery intern. She is most interested in managing endocrine diseases, ultrasonography and anesthesia protocols.
  • Doctor of Veterinary Medicine, University of Minnesota, St. Paul
  • Bachelor of Science, Medical and Veterinary Sciences, University of New Hampshire, Durham, NH
Dr. Byrne enjoys hiking, visiting the beach, watching the New England Patriots and spending time with her fiancé and two cats, Tucker and Ranch.
Dr. Heather Chalfant is an emergency medicine veterinarian. She is holding a black and white dog.
Heather Chalfant
VMD
Emergency Medicine
Heather Chalfant
VMD
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Heather Chalfant is particularly interested in the emergency presentation of endocrine disorders.
  • Internship, Small Animal Medicine/Surgery, University of Minnesota, St. Paul
  • Doctor of Veterinary Medicine, University of Pennsylvania, Philadelphia
  • Bachelor of Science, Lafayette College, Easton PA
Dr. Chalfant and her family, which includes two daughters, love anything outdoors, but especially biking, swimming, skiing, sledding and gardening.
Dr. Joseph Collins is a clinician in our emergency medicine service.
Joseph Collins
DVM, MLAM
Emergency Medicine
Joseph Collins
DVM, MLAM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Joseph Collins is most interested in treating renal failure, hemoabdomen and congestive heart failure.
  • Internship, Small Animal Medicine & Surgery, BluePearl Specialty + Emergency Pet Hospital, Waltham, MA
  • Master of ​Laboratory ​Animal Medicine, Tufts University, North Grafton, MA
  • Doctor of Veterinary Medicine, Tufts University, North Grafton, MA
  • Bachelor of Science, ​Chemical Biology, Saint Joseph’s University, Philadelphia, PA
At the end of a long day, Dr. Collins feels lucky to go home to his wife, two black cats and French bulldog.
Dr. Kristina DePaula is board certified in veterinary emergency and critical care medicine. She is sitting with two large dogs.
Kristina DePaula
DVM, DACVECC
Critical Care
Kristina DePaula
DVM, DACVECC
BluePearl Veterinarian
Board Certified in Veterinary Emergency & Critical Care
Critical Care
Servicing Locations
Dr. Kristina DePaula's particular clinical interests include trauma, coagulation disorders and sepsis.
  • Diplomate, American College of Veterinary Emergency & Critical Care
  • Residency, Emergency & Critical Care Medicine, Tufts University, North Grafton MA
  • Internship, Small Animal Medicine & Surgery, BluePearl Veterinary Partners, New York City NY
  • Doctor of Veterinary Medicine, Tufts University, North Grafton MA
  • Bachelor of Arts, College of the Holy Cross, Worcester MA
Dr. DePaula loves spending time outdoors with her husband and two dogs, River and Turner, and lounging on the couch with her two cats, Finn and Maki. Other favorite pastimes include travel, miniature golf, karaoke and cooking.
Illustration of a silhouette of a figure with a stethoscope draped around their neck.
Jacquelyn Foley
DVM
Jacquelyn Foley
DVM
BluePearl Veterinarian
Servicing Locations
As a small animal medicine & surgery intern, Dr. Jacquelyn Foley finds trauma cases gratifying because they allow room for creativity in finding the best treatment. She especially enjoys being able to send pets home to their families after caring for them.
  • Clinical Rotation, Texas A&M University, College Station
  • Doctor of Veterinary Medicine, Ross University, St. Kitts & Nevis, West Indies
  • Bachelor of Science, Animal Science and Technology, University of Rhode Island, Kingstown
Dr. Foley enjoys going to the gym, running and yoga. She loves snacks, sloths, naps and testing out new food and drink spots. Her family consists of her brother, sister, mom, dad, nana and the newest addition, a goldendoodle named Guinness.
Dr. Kristina Foyo is a doctor in our emergency service.
Kristina Foyo
DVM
Emergency Medicine
Kristina Foyo
DVM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Kristina Foyo’s clinical interests include trauma, shock, immune-mediated disorders and toxicity cases.
  • Internship, Small Animal Medicine and Surgery, New England Animal Medical Center, West Bridgewater MA
  • Doctor of Veterinary Medicine, Cornell University, Ithaca NY
  • Bachelor of Science, Animal Biology, University of Florida, Gainesville FL
Dr. Foyo and her husband enjoy hiking, rocking climbing and running Spartan races. They have three dachshunds, Fred, Ethel and Louie, and a bearded dragon.
Dr. Amy Goldstein is an emergency medicine veterinarian. She is sitting with a large dog.
Amy Goldstein
DVM
Emergency Medicine
Amy Goldstein
DVM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Goldstein has a special interest in emergency treatment of endocrine diseases, toxins and feline medicine.
  • Doctor of Veterinary Medicine, Tufts Cummings School of Veterinary Medicine, North Grafton MA
  • Internship, Small Animal Medicine & Surgery, VCA South Shore Animal Hospital, Weymouth MA
  • Bachelor of Science, Lafayette College, Easton PA
Dr. Goldstein enjoys traveling, hiking, reading and spending time with her family and friends, including her four cats.
Dr. Amanda Hill is a small animal medicine and surgery intern. She is holding a pug.
Amanda Hill
DVM
Amanda Hill
DVM
BluePearl Veterinarian
Servicing Locations
Dr. Hill is a small animal medicine and surgery intern. In her clinical work, she likes to focus on radiology and ultrasound testing.
  • Doctor of Veterinary Medicine, Auburn University, AL
  • Bachelor of Science, Biology, University of Massachusetts, Dartmouth
Dr. Hill likes to hike and kayak with her fiancé and her 2-year-old pug named Olive. She also enjoys white water rafting, camping and any outdoors activity.
Dr. Kathleen Kanjer is an emergency medicine veterinarian. She is holding a black and white terrier.
Kathleen Kanjer
DVM
Emergency Medicine
Kathleen Kanjer
DVM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Kathleen Kanjer has years of experience working in emergency medicine, critical care and general practice. Her special interests include emergency procedures and critical care cases.
  • Internship, Small Animal Medicine & Surgery, Angell Animal Medical Center, Boston MA
  • Doctor of Veterinary Medicine, University of California, Davis
  • Bachelor of Science, Animal Physiology and Neuroscience, University of California, Davis
Dr. Kanjer enjoys spending time outdoors with her husband, young son and terrier mix, Molly.
Dr. Erin McGowan is board certified in veterinary emergency and critical care medicine. She is sitting outside on a green bench with a large dog who is wearing a bandana.
Erin McGowan
VMD, DACVECC
Critical Care
Erin McGowan
VMD, DACVECC
BluePearl Veterinarian
Board Certified in Veterinary Emergency & Critical Care
Critical Care
Servicing Locations
Dr. Erin McGowan's clinical interests include coagulopathies, fluid therapy, systemic inflammatory response syndrome and sepsis.
  • Diplomate, American College of Veterinary Emergency & Critical Care
  • Residency, Emergency and Critical Care, University of Pennsylvania, Philadelphia
  • Internship, Small Animal Medicine & Surgery, Red Bank Veterinary Hospital, Tinton Falls NJ
  • Doctor of Veterinary Medicine, University of Pennsylvania, Philadelphia
  • Bachelor of Arts, Chemistry, Colby College, Waterville ME
Dr. McGowan's favorite pastimes include boxing, hiking and traveling with her husband. They share their home with pit bull mix Barnie, and cats Frank, Kyle and Ozzie.
Dr. Caleb Murphy is an emergency medicine veterinarian. He is sitting with a large dog.
Caleb Murphy
VMD
Emergency Medicine
Caleb Murphy
VMD
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Dr. Caleb Murphy's professional interests include shock, trauma, and urinary and reproductive emergencies.
  • Internship, Small Animal Medicine & Surgery, BluePearl Veterinary Partners, New York City
  • Doctor of Veterinary Medicine, University of Pennsylvania, Philadelphia
  • Bachelor of Arts, Amherst College, Amherst MA
Dr. Murphy lives in Waltham with his wife and young son, as well as two cats and a lazy greyhound. Dr. Murphy moved his family from Brooklyn in order to be closer to the Boston Red Sox.
Dr. Mary Ann Nieves is board certified in veterinary surgery. She is sitting with an Irish setter.
Mary Ann Nieves
MS, DVM, DACVS
Surgery
Mary Ann Nieves
MS, DVM, DACVS
BluePearl Veterinarian
Board Certified in Veterinary Surgery
Surgery
Servicing Locations
Before joining us, Dr. Mary Ann Nieves taught clinical and didactic small animal surgery and dentistry at Iowa State University. She has served as a surgeon as the need arose at several other teaching institutions including the Atlantic Veterinary College, Mississippi State University and Louisiana State University. She performs and enjoys soft tissue, orthopedic and neurosurgery, but has a special interest in surgical oncology, orthopedic and maxillofacial surgery, and pain management. Dr. Nieves is a reviewer for the Journal of the American Animal Hospital Association.
  • Certification, Tibial Plateau Leveling Osteotomy
  • Certification, PennHip Evaluation
  • Certification, Advanced Total Hip Replacement Workshop
  • Diplomate, American College of Veterinary Surgeons
  • Residency, Surgery, Iowa State University, Ames
  • Doctor of Veterinary Medicine, Oklahoma State University, Stillwater
  • Master of Science, Veterinary Surgery, Iowa State University, Ames
  • Bachelor of Arts, University of Colorado, Boulder
Dr. Nieves enjoys time with her family including her four-footed family Ginger, Milo, Twiggy and Lucy, coastal and deep sea fishing, sailing, hiking, gardening, and traveling to see friends and family.
Dr. Melisa Rosenthal is board certified in small animal internal medicine.
Melisa Rosenthal
DVM, DACVIM (SAIM)
Internal Medicine
Melisa Rosenthal
DVM, DACVIM (SAIM)
BluePearl Veterinarian
Board Certified in Small Animal Internal Medicine
Internal Medicine
Servicing Locations
Dr. Melisa Rosenthal has a particular interest in nephrology and all manner of kidney diseases. She is excited about the advances in dialysis as well as all types of minimally invasive interventional procedures.
  • Diplomate, American College of Veterinary Internal Medicine (Small Animal Internal Medicine)
  • Residency, Small Animal Internal Medicine, Tufts University, North Grafton MA
  • Internship, Small Animal Medicine & Surgery, University of Pennsylvania, Philadelphia
  • Doctor of Veterinary Medicine, Cornell University, Ithaca NY
  • Bachelor of Science, Biochemistry and Cell Biology, Rice University, Houston TX
  • Bachelor of Arts, Hispanic Studies, Rice University, Houston TX
Dr. Rosenthal enjoys reading and bird watching, a hobby she developed while working in ecological research in college. She and her husband, a doctor of human medicine, have three cats, Naomi, Aria and Nora.
Dr. Lana Scherrer is a small animal medicine & surgery intern.
Lana Scherrer
DVM
Lana Scherrer
DVM
BluePearl Veterinarian
Servicing Locations
Dr. Lana Scherrer is a small animal medicine & surgery intern. She is most interested in animal welfare and pain management.
  • Doctor of Veterinary Medicine, University of Sydney, Australia
  • Bachelor of Science, Biological Sciences, Florida Atlantic University, Boca Raton
Dr. Scherrer founded an animal rescue in Boca Raton, Florida with her mother in 2003. The non-profit provides full medical care to homeless animals and helps them get adopted into forever homes. She also enjoys traveling and spending time with her family.
Dr. Leslie Schwarz is board certified in veterinary radiology. She is sitting with a yellow lab.
Leslie Schwarz
DVM, MS, DACVR
Diagnostic Imaging
Leslie Schwarz
DVM, MS, DACVR
BluePearl Veterinarian
Board Certified in Veterinary Radiology
Diagnostic Imaging
Servicing Locations
Dr. Leslie Schwarz’s professional interests include small animal radiology, abdominal and non-cardiac thoracic ultrasound and CT. She has a particular interest in the imaging of oncology patients.
  • Diplomate, American College of Veterinary Radiology
  • Residency, Veterinary Radiology, Tufts University, North Grafton MA
  • Internship, Small Animal Medicine & Surgery, Angell Memorial Animal Hospital, Boston MA
  • Doctor of Veterinary Medicine, University of Missouri, Columbia
  • Master of Science, Animal Science, Rutgers University, New Brunswick NJ
  • Bachelor of Science, Cook College, Rutgers University, New Brunswick NJ
When Dr. Schwarz is not busy attending her children’s various sports, music, or school events, she enjoys skiing, traveling with her family, and keeping her yellow lab, Chica, out of trouble.
Dr. Bari Spielman is board certified in veterinary internal medicine.
Bari Spielman
DVM, DACVIM
Internal Medicine
Bari Spielman
DVM, DACVIM
BluePearl Veterinarian
Board Certified in Veterinary Internal Medicine
Internal Medicine
Servicing Locations
Dr. Bari Spielman has a strong interest in gastroenterology and GI endoscopy as well as endocrinology, hepatic and renal disease, and immune mediated disorders. In 2001, she became head of internal medicine at the Veterinary Emergency and Specialty Center of New England, which is now BluePearl Veterinary Partners.
  • Diplomate, American College of Veterinary Internal Medicine
  • Residency, Internal Medicine, Animal Medical Center, New York City
  • Internship, General Medicine & Surgery, Oradell Animal Hospital, Oradell NJ
  • Doctor of Veterinary Medicine, University of Tennessee, Knoxville
  • Bachelor of Science, University of Massachusetts, Amherst
Dr. Spielman is a maniacal sports fan, especially loyal to the Patriots, Bruins, Red Sox and Volunteers. She is knee deep in dirt all summer, tending to her many gardens.
Dr. Katherine Suter is a small animal medicine and surgery intern.
Katherine Suter
DVM
Katherine Suter
DVM
BluePearl Veterinarian
Servicing Locations
Dr. Suter is a small animal medicine and surgery intern. Her clinical interests include diagnostic imaging and ultrasound use with emergency patients.
Away from the hospital, Dr. Suter enjoys spending time with her husband and their cats, Chippy and Seaborg. She also likes collecting antique dishes.
Dr. Marcia Whiteley is board certified in veterinary radiology. She is holding a gray tabby cat.
Marcia Whiteley
DVM, DACVR
Diagnostic Imaging
Marcia Whiteley
DVM, DACVR
BluePearl Veterinarian
Board Certified in Veterinary Radiology
Diagnostic Imaging
Servicing Locations
Dr. Marcia Biber Whiteley is an active lecturer on imaging topics for veterinarians and veterinary technicians throughout the Midwest and Northeast. She is especially interested in non-cardiac and abdominal ultrasound and radiology.
  • Diplomate, American College of Veterinary Radiology
  • Residency, Veterinary Radiology, University of Minnesota, St. Paul
  • Doctor of Veterinary Medicine, Purdue University, West Lafayette IN
  • Bachelor of Science, Cook College, Rutgers University, New Brunswick NJ
You can find Dr. Whitely wrapped up in a good book, cooking, at the theatre, or cheering on her beloved St. Louis Cardinals.
Dr. Alexis Zallas is an emergency medicine veterinarian. She is hugging a small black dog.
Alexis Zallas
DVM
Emergency Medicine
Alexis Zallas
DVM
BluePearl Veterinarian
Emergency Medicine
Servicing Locations
Some or Dr. Alexis Zallas' favorites include internal medicine cases like diabetes or Addison’s disease, oncologic emergencies such as hemangiosarcoma, and surgical emergencies like gastric dilatation volvulus and laceration repairs. She also enjoys treating clotting disorders and pericardial effusion.
  • Internship, Small Animal Medicine & Surgery, VCA Shoreline & VCA Norwalk Veterinary Referral and Emergency Centers, CT
  • Doctor of Veterinary Medicine, University of Missouri, Columbia
  • Bachelor of Arts, Biology, Regis College, Weston MA
Passionate about her Greek heritage, Dr. Zallas has been to Greece multiple times. She actively participates in Greek events in the Boston community and loves cooking with her mother while listening to Greek music. She also participates in 18th century historical interpretation.

Technicians (VTS)

Illustration of a silhouette of a figure with a stethoscope draped around their neck.
Robyn Heater
CVT, VTS (ECC)
Critical Care
Robyn Heater
CVT, VTS (ECC)
Veterinary Technician Specialist (Emergency & Critical Care)
Critical Care
Servicing Locations
Robyn loves the every-day-is-different aspect of emergency medicine, and the prospect of making a positive difference in a pet’s life. She is RECOVER certified in basic and advanced life support. A champion roller skater, Robyn has a full house of pets, with cats Sherlock, Dillon, Inspector Gadget and Molly; and golden retriever Tyler – all of whom hit the wilderness with her on camping trips.