Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carlos Collin, MD

Psychiatry Physician in Rockville, MD · enumerated 2005.

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

National Provider Identifier

1609850171

Verified

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Registry record

Entity type Individual (Type 1)

Name Carlos Collin

Credential MD

Sex Male

Practice address 14901 Broschart Rd, Rockville, MD, 20850

Phone (703) 698-5220

Fax (703) 573-2351

Enumeration date Nov 30, 2005

Last updated in NPPES Apr 21, 2026

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 1609850171 (IL) Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License D0058156 (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
3137599	Other	-	MAMSI
407682600	Medicaid	MD	-
710036	Other	-	NCPPO
7874811	Other	-	AETNA
0082	Other	DC	CAREFIRST

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 Carlos Collin 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 Carlos Collin?

The National Provider Identifier (NPI) for Carlos Collin is 1609850171, 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 2026-04-21.