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

DR. H SHAW WARREN MD
NPI 1346213618
Internal Medicine in Boston, MA

Q: What is H Warren's NPI number?

The NPI number for H Warren is 1346213618. It was assigned to this individual provider in the NPPES registry on February 8, 2006.

Q: What is H Warren's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for H Warren 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 30 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.

Active since February 08, 2006

55 FRUIT STREET, COX 5, BOSTON, MA 02114(617) 726-3812 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Dr. H Shaw Warren Md NPPES

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

DR. H SHAW WARREN MD (NPI 1346213618) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (47375) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1346213618

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. H SHAW WARRENCredential: MD

Location Address55 FRUIT STREET, COX 5Boston, MA 02114-2696

Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894

Phone(617) 726-3812

Sole ProprietorNo

Enumeration DateFebruary 8, 2006

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1346213618 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MA · 47375

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.

Also ListedInternal Medicine · Infectious DiseaseTaxonomy 207RI0200X · License 47375 (MA)

55 FRUIT STREET, Boston, MA 02114

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Other Identifiers 3

Medicaid3023371MA

Other047375MA · Tufts Health Plan

OtherJ06382MA · Bcbs Ma

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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.

KUI TOH GERARD LEONG M.D.

Internal Medicine (Cardiovascular Disease)

55 FRUIT STREET, MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114

Suffolk County (617) 726-8862

MS. JACQUELINE BANGO LICSW

Social Worker (Clinical)

55 FRUIT STREET, FOUNDERS BUILDING SUITE 880
BOSTON, MA 02114

Suffolk County (617) 643-8281

SARA ELIZABETH GROSSLEIN PA

Physician Assistant

55 FRUIT STREET, WHITE 1
BOSTON, MA 02114

Suffolk County (617) 724-4100

JEFFREY M ELLENBOGEN M.D.

Psychiatry & Neurology (Neurology)

55 FRUIT STREET, WANG 720 (NEUROLOGY)
BOSTON, MA 02114

Suffolk County (617) 724-7419

DR. NANCY LEE HARRIS MD

Pathology (Anatomic Pathology & Clinical Pathology)

55 FRUIT STREET, WRN 2 PATHOLOGY ASSOCIATES
BOSTON, MA 02114

Suffolk County (617) 726-5155

DR. STANLEY YANG SHAW MD PHD

Internal Medicine (Cardiovascular Disease)

55 FRUIT STREET, YAW 5 CARDIAC UNIT ASSOCIATES
BOSTON, MA 02114

Suffolk County (617) 724-6750

LEONARDO V RIELLA M.D., PHD

Internal Medicine

55 FRUIT STREET, WHITE 5
BOSTON, MA 02114

Suffolk County (617) 726-5050

SUSAN MAHER CRNA

Nurse Anesthetist, Certified Registered

55 FRUIT STREET, CLN 309 MGH ANESTHESIA ASSOCIATES
BOSTON, MA 02114

Suffolk County (617) 726-3030

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 H Warren's NPI number?

The NPI number for H Warren is 1346213618. It was assigned to this individual provider in the NPPES registry on February 8, 2006.

Where is H Warren located?

H Warren practices at 55 Fruit Street Cox 5, Boston, MA 02114. The listed phone number is (617) 726-3812.

What is H Warren's specialty?

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

What insurance does H Warren accept?

Health plans from Anthem Blue Cross and Blue Shield list H Warren as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for H Warren 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 30 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.