MSPCA-Angell Headquarters

350 South Huntington Avenue, Boston, MA 02130
(617) 522-7400
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Angell Animal Medical Centers – Boston

350 South Huntington Avenue, Boston, MA 02130
(617) 522-7282
More Info

Angell West

293 Second Avenue, Waltham, MA 02451
(781) 902-8400
For on-site assistance (check-ins and pick-ups):
(339) 970-0790
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Angell at Essex

565 Maple Street, Danvers, MA 01923
(978) 304-4648
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Animal Care and Adoption Centers – Boston

350 South Huntington Avenue, Boston, MA 02130
(617) 522-5055
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Animal Care and Adoption Centers – Cape Cod

1577 Falmouth Road, Centerville, MA 02632
(508) 775-0940
More Info

Animal Care and Adoption Centers – Nevins Farm

400 Broadway, Methuen, MA 01844
(978) 687-7453
More Info

Animal Care and Adoption Centers – Northeast Animal Shelter

347 Highland Ave., Salem, MA 01970
(978) 745-9888
More Info

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Internal Medicine in Waltham

The Internal Medicine Service at Angell Animal Medical Center offers specialized care and outpatient services for cats and dogs.

Angell’s Internal Medicine group has decades of clinical experience and offers state-of-the-art diagnostics and therapeutic treatment options. The service provides expertise in many medical disciplines including; endocrinology, nephrology, hepatology, gastroenterology, immune disorders, hematology, and infectious diseases.

What is a Veterinary Internal Medicine Specialist?

Questions about Lyme disease in dogs? Find answers here.

For veterinarians interested in Approved Residency Training Programs in Small Animal Internal Medicine, please click here.


Angell West Contact

293 Second Avenue
Waltham, MA 02451

Phone: 781-902-8400
Fax: 781-622-1410

Angell Appointments

Angell West Hours

Monday: 9a – 3p
Tuesday: 12p – 8p (every other Tue) or 1p – 4p (every other Tue)
Wednesday: 9a – 5:30p
Thursday: 12p – 6:30p (every other Thu) or 12p – 3p (every other Thu)
Friday 9a – 1:30p
Saturday: 9a – 1:30p (every other Sat)
Sunday: 9a – 3p (every other Sun)

Internal Medicine Team

Internal Medicine Team

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If you have any questions please call Cathy Reid at:

Phone: 617-541-5186, or
Fax at 617-989-1635.

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Our Services

Appointments with Angell’s Internal Medicine service are available in our Boston and Waltham locations. Some of the following services are limited to our Boston location. Please call 617-541-5186 for more details.

  • Doctors are accessible for case consultation and updates on hospitalized cases
  • 24-hour continuous monitoring for hospitalized patients
  • Tracheal and urethral stenting
  • Complete capabilities for endoscopic diagnosis of gastrointestinal, respiratory, and urogenital disease
  • Advanced diagnostic imaging including on site CT and MRI
  • Feeding tube placement in compromised patients (PEG, esophagostomy, NE tube)
  • Total parenteral nutrition
  • I-131 treatment for hyperthyroid cats (generally released 3 days post treatment)
  • Outpatient abdominal ultrasounds are available through the Internal Medicine service at Angell West and the Diagnostic Imaging service in Boston. Click here for more information
  • An integrated approach to medicine with full support of critical care, cardiology, ophthalmology, neurology, oncology, radiology, and surgery departments
  • Diagnostic laparoscopy allows Angell veterinarians to evaluate abdominal organs by direct visualization and obtain biopsy samples that can be directed to very precise locations