Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Aseff, MD

Q: What is the NPI number for John Aseff?

The National Provider Identifier (NPI) for John Aseff is 1184628414, a Type 1 (individual) record in the CMS NPPES registry.

Physical Medicine & Rehabilitation Physician in Washington, DC · enumerated 2005.

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

National Provider Identifier

1184628414

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Registry record

Entity type Individual (Type 1)

Name Dr. John Aseff

Credential MD

Sex Male

Practice address 102 Irving St Nw, Medical Affairs, Washington, DC, 20010

Phone (202) 877-1000

Enumeration date May 31, 2005

Last updated in NPPES Mar 1, 2012

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License MD14851 (DC) 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
852235	Other	MD	AETNA NON HMO
114425	Other	DC	KAISER
250007884	Other	DC	RAILROAD MEDICARE
024039400	Medicaid	DC	-
496551500	Medicaid	MD	-
511149003	Other	DC	CIGNA
411437	Other	MD	MAMSI
4298914	Other	MD	AETNA HMO
494957	Other	DC	NCPPO
529506-01	Other	MD	BLUECROSS OF MD
DCA0014851	Other	DC	DC LICENSE
5460-0003	Other	DC	BLUESHIELD DC

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 John Aseff?

The National Provider Identifier (NPI) for John Aseff is 1184628414, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Aseff practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-01.