What is Ambuja Banerjee's NPI number?

Ambuja Banerjee's National Provider Identifier (NPI) is 1427856392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ambuja Banerjee's specialty?

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

Where is Ambuja Banerjee located?

Ambuja Banerjee's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.

What is Ambuja Banerjee's phone number?

The practice phone number listed in the NPPES registry for Ambuja Banerjee is (617) 636-5000.

Is Ambuja Banerjee's NPI active?

Yes — Ambuja Banerjee's NPI (1427856392) is active in the NPPES registry as of the last update on 2026-04-21.

IndividualActive

Ambuja Banerjee

NPI 1427856392 · Internal Medicine Physician · Boston, MA

Ambuja Banerjee is a Internal Medicine Physician provider in Boston, MA (NPI 1427856392).

Provider details

NPI number: 1427856392
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Sex: Female
Sole proprietor: No
License: 3020458 (MA)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 3020458 (MA)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(55/100 index)

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

Registry tenure38% of score
1 yr in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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.

Practice location

800 Washington St

Boston, MA 02111-1552

Phone: (617) 636-5000

Street-level locationGet directions

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Mailing address