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

Dr. Charles A Gropper, M.D.

Dermatology Physician in Bronx, NY · enumerated 2006.

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

National Provider Identifier

1659332864

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles A Gropper

Credential M.D.

Sex Male

Practice address Bronx, NY, 10457

Phone (718) 960-5085

Fax (718) 960-6465

Enumeration date Mar 29, 2006

Last updated in NPPES Nov 12, 2024

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

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 175302 (NY) 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
01355884	Medicaid	NY	-

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

What is the NPI number for Charles Gropper?

The National Provider Identifier (NPI) for Charles Gropper is 1659332864, a Type 1 (individual) record in the CMS NPPES registry.

Where does Charles Gropper practice?

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

Other providers at this practice address

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Nora Barmawi Pediatrics Physician · Bronx, NY NPI 1154734598

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-12.