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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. CATHARINE M. MINTZER M.D.
NPI 1013905652
Internal Medicine in Cambridge, MA

Active since October 07, 2005
725 CONCORD AVE, SUITE 4100, CAMBRIDGE, MA 02138(617) 864-8822(617) 547-5367 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Catharine M. Mintzer M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CATHARINE M. MINTZER M.D. (NPI 1013905652) is an individual internal medicine provider in Cambridge, Massachusetts, licensed in Massachusetts (58797) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1013905652
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. CATHARINE M. MINTZERCredential: M.D.
Location Address725 CONCORD AVE, SUITE 4100Cambridge, MA 02138-1040
Mailing Address377 Walnut StNewtonville, MA 02460-1945 · (617) 964-7213
Phone(617) 864-8822
Fax(617) 547-5367
Sole ProprietorNo
Enumeration DateOctober 7, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1013905652 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 58797
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
725 CONCORD AVE, Cambridge, MA 02138
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Other Identifiers 1

Medicaid3039251MA

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MT AUBURN PROFESSIONAL SERVICES
Internal Medicine
725 CONCORD AVE, SUITE 4100
CAMBRIDGE, MA 02138
Middlesex County (617) 864-8822
CHRISTOS A.HASIOTIS,MD.PC
Specialist
725 CONCORD AVE, SUITE 4500
CAMBRIDGE, MA 02138
Middlesex County (617) 864-3800
DR. EMAN ELKADRY MD
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
725 CONCORD AVE, STE 3300
CAMBRIDGE, MA 02138
Middlesex County (617) 354-5452
DR. VIRGINIA H. PALAZZO M.D.
Internal Medicine
725 CONCORD AVE, SUITE 4100
CAMBRIDGE, MA 02138
Middlesex County (617) 864-8822
BELMONT MEDICAL ASSOCIATES, INC.
Podiatrist
725 CONCORD AVE, SUITE 4100
CAMBRIDGE, MA 02138
Middlesex County (617) 864-8822
DR. STEPHEN P. RANERE JR. M.D.
Internal Medicine
725 CONCORD AVE, SUITE 4100
CAMBRIDGE, MA 02138
Middlesex County (617) 864-8822
DR. KENNETH A. BERNSTEIN M.D.
Internal Medicine
725 CONCORD AVE, SUITE 4100
CAMBRIDGE, MA 02138
Middlesex County (617) 864-8822
SARAH MARGARET SAALFIELD APRN
Nurse Practitioner (Family)
725 CONCORD AVE, SUITE 2000
CAMBRIDGE, MA 02138
Middlesex County (617) 661-4600

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Catharine Mintzer's NPI number?

The NPI number for Catharine Mintzer is 1013905652. It was assigned to this individual provider in the NPPES registry on October 7, 2005.

Where is Catharine Mintzer located?

Catharine Mintzer practices at 725 Concord Ave Suite 4100, Cambridge, MA 02138. The listed phone number is (617) 864-8822.

What is Catharine Mintzer's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Catharine Mintzer was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.