Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joshua H Kolko, MD

Family Medicine Physician in Rockville, MD · enumerated 2006.

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

National Provider Identifier

1477614998

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Registry record

Entity type Individual (Type 1)

Name Dr. Joshua H Kolko

Credential MD

Sex Male

Practice address 1396 Piccard Drive, Rockville, MD, 20850

Phone (301) 548-5726

Fax (301) 548-5780

Enumeration date Dec 12, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D58436 (MD) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD33497 (DC) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 0101232466 (VA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 specialty is Joshua Kolko?

Joshua Kolko is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Kaiser Foundation Health Plan of the Mid Atlantic States, Inc Clinical Medical Laboratory · Rockville, MD NPI 1902971849 Lauren Cosgrove Family Medicine Physician · Rockville, MD NPI 1770651788 Kaiser Foundation Health Plan of the Mid-Atlantic States, Inc Managed Care Organization Pharmacy · Rockville, MD NPI 1871651349 Miki Darling Family Medicine Physician · Rockville, MD NPI 1780745059 Joel Kalman Internal Medicine Physician · Rockville, MD NPI 1063577310

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.