What is Gabrielle Bromberg's NPI number?

Gabrielle Bromberg's National Provider Identifier (NPI) is 1437689676, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gabrielle Bromberg's specialty?

Gabrielle Bromberg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Gabrielle Bromberg located?

Gabrielle Bromberg's practice location on file with NPPES is Massachusetts General Hospital, Boston, MA 02114.

What is Gabrielle Bromberg's phone number?

The practice phone number listed in the NPPES registry for Gabrielle Bromberg is (617) 643-0596.

Does Gabrielle Bromberg accept Medicare?

Gabrielle Bromberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Gabrielle Bromberg's NPI active?

Yes — Gabrielle Bromberg's NPI (1437689676) is active in the NPPES registry as of the last update on 2026-02-18.

IndividualActiveAccepts Medicare

Gabrielle Bromberg, MD

NPI 1437689676 · Internal Medicine Physician · Boston, MA

Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Gabrielle Bromberg, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1437689676).

Provider details

NPI number: 1437689676
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No
License: 271113 (MA)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 271113 (MA)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(59/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
9 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
3 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
211 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	137	$123
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	32	$82
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	30	$180
Hospital Discharge Day Management, More Than 30 Minutes99239	12	$120

Typical Medicare-allowed amounts for these services range $82–$180 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Practice location

Massachusetts General Hospital

55 Fruit St.

Boston, MA 02114

Phone: (617) 643-0596

Approximate (ZIP-level) locationGet directions

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Mailing address