Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert C Mellors Jr., MD

Internal Medicine Physician in Norwell, MA · enumerated 2005.

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

National Provider Identifier

1598756991

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert C Mellors Jr.

Credential MD

Sex Male

Practice address 143 Longwater Dr, Norwell, MA, 02061

Phone (781) 878-5200

Fax (781) 878-6750

Enumeration date Nov 3, 2005

Last updated in NPPES Dec 21, 2015

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 39582 (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
0195332	Medicaid	MA	-
042297845	Other	MA	HCVM
700417	Other	MA	TUFTS
C04862	Other	MA	BCBS
0019261	Other	MA	NEIGHBORHOOD HLTH PLAN
042297845	Other	MA	TRICARE
7613316	Other	MA	AETNA
042297845	Other	MA	UNITED HEALTH CARE
042297845	Other	MA	GIC UNICARE
042297845	Other	MA	PRIVATE HEALTHCARE SYSTEM
B10182106	Other	MA	CIGNA
45684	Other	MA	FALLON
61736	Other	MA	HVD PILGRIM HEALTH CARE
B10182101	Other	MA	CIGNA INT

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

Is NPI 1598756991 active?

Yes, as of the latest NPPES snapshot, NPI 1598756991 is active (record last updated 2015-12-21).

How do I verify Robert Mellors's NPI record?

Cross-check NPI 1598756991 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Scott Corkins Family Medicine Physician · Norwell, MA NPI 1578560488 Christopher Cox Pediatrics Physician · Norwell, MA NPI 1871583740 Edward Nalband Internal Medicine Physician · Norwell, MA NPI 1396736062 James Mitterando Family Medicine Physician · Norwell, MA NPI 1073504478 Benjamin Ryan Family Medicine Physician · Norwell, MA NPI 1154312379 Sara Nuciforo Internal Medicine Physician · Norwell, MA NPI 1447231485 Teri Miner Family Medicine Physician · Norwell, MA NPI 1649251406 Richard Kauff Pediatrics Physician · Norwell, MA NPI 1215918677

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-12-21.