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

Dr. Robert C Feldman, MD

Ophthalmology Physician in Rockville, MD · enumerated 2006.

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

National Provider Identifier

1689610321

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert C Feldman

Credential MD

Sex Male

Practice address Rockville, MD, 20850

Phone (301) 279-9696

Fax (301) 251-5454

Enumeration date Jun 21, 2006

Last updated in NPPES Jul 7, 2011

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

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License D37020 (MD) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License D0037020 (MD) 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
0122713	Other	-	AETNA PPO
54381100	Medicaid	MD	-
1030582	Other	-	CIGNA
42514601	Other	-	CAREFIRST BCBS

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

Where does Robert Feldman practice?

The practice location on file with NPPES is in Rockville, MD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Robert Feldman?

The National Provider Identifier (NPI) for Robert Feldman is 1689610321, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-07.