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

Dr. Tad David Baum, M.D.

Ophthalmology Physician in Leominster, MA · enumerated 2006.

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

National Provider Identifier

1770597502

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Registry record

Entity type Individual (Type 1)

Name Dr. Tad David Baum

Credential M.D.

Sex Male

Practice address Leominster, MA, 01453

Phone (978) 534-2426

Fax (978) 534-4711

Enumeration date Jul 28, 2006

Last updated in NPPES Dec 28, 2015

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

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 150333 (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
043540266	Other	-	FALLON
0800773	Other	-	UNITED HEALTH CARE
151588	Other	-	HARVARD PILGRIM
J16528	Other	-	BLUE SHIELD
3150356	Medicaid	MA	-
043540266	Other	-	ONE HEALTH PLAN
043540266	Other	-	TRICARE
043540266	Other	-	UNICARE
3150356	Other	-	MASS HEALTH
40918	Other	-	DAVIS VISION
B20757203	Other	-	CIGNA
043540266	Other	-	PRIVATE HEALTH CARE
043540266	Other	-	GIC
150333	Other	-	TUFTS
2435111	Other	-	AETNA
3150756	Medicaid	MA	-
977333	Other	-	NETWORK HEALTH

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.

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Frequently asked questions

How do I verify Tad Baum's NPI record?

Cross-check NPI 1770597502 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1770597502 active?

Yes, as of the latest NPPES snapshot, NPI 1770597502 is active (record last updated 2015-12-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-28.