Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mary A Drinkwater, M.D.

Diagnostic Radiology Physician in Newton, MA · enumerated 2006 · practices at Mass General Brigham Medical Group Suburban Massachusetts Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1003903766

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Registry record

Entity type Individual (Type 1)

Name Mary A Drinkwater

Credential M.D.

Sex Female

Practice address Newton, MA, 02462

Phone (617) 243-6162

Enumeration date Oct 6, 2006

Last updated in NPPES Aug 4, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 55119 (MA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
3084728	Medicaid	MA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Mary Drinkwater's NPI record?

Cross-check NPI 1003903766 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1003903766 active?

Yes, as of the latest NPPES snapshot, NPI 1003903766 is active (record last updated 2008-08-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-04.