Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Catharina Armstrong, MD

Individual provider Internal Medicine Physician · NPI 1538295217

Catharina Armstrong, MD is an Infectious Disease in Worcester, Massachusetts. Qualified in 2003, 23 years ago. Practices with Mass General Brigham Medical Group Suburban Massachusetts Inc, a 532-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
23
Licensed in
MA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

119 Belmont St
Worcester, MA 01605-2903
Phone: (508) 334-8515
Fax: (508) 334-6490
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • Massachusetts General Hospital, Boston, MA 02114 — (617) 726-2066
  • 157 Union St, Marlborough, MA 01752-1228 — (508) 486-5678
  • 55 Lake Ave N, Worcester, MA 01655-0002 — (508) 334-8515

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence L-221067 (MA)

Record details

NPI number1538295217
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 26, 2007
Last updated in NPPESMarch 25, 2021
Certification dateMarch 25, 2021
Mailing addressMassachusetts General Hospital, 55 Fruit Street, Boston, MA 02114

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Mass General Brigham Medical Group Suburban Massachusetts Inc — 532 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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