Individual provider · Type 1 NPI

Michelle Rullan Johnson, MD

Geriatric Medicine (Internal Medicine) Physician · Cambridge, MA

NPI number 1114285905 Active

Practice location

119 Windsor St
Cambridge, MA 02139-3647

Mailing address

10 Beacon St
Somerville, MA 02143-4311

Specialties and licenses

TaxonomyCodeLicense
Skilled Nursing Facility 314000000X265139 (MA)
Geriatric Medicine (Internal Medicine) Physician Primary 207RG0300X265139 (MA)
Primary Care Clinic/Center 261QP2300X265139 (MA)
Family Medicine Physician 207Q00000X265139 (MA)

Geriatric Medicine (Internal Medicine) Physician: An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

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About NPI 1114285905

Michelle Rullan Johnson, MD's National Provider Identifier is 1114285905, issued on Apr 30, 2012. The primary taxonomy on file is Geriatric Medicine (Internal Medicine) Physician (207RG0300X), and the practice location is in Cambridge, MA. The record was last updated on Dec 19, 2025.