Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stanley Marc Knoll, M.D.

Surgery Physician in Washington, DC · enumerated 2005.

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

National Provider Identifier

1962401109

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Registry record

Entity type Individual (Type 1)

Name Dr. Stanley Marc Knoll

Credential M.D.

Sex Male

Practice address 2440 M St Nw, 706, Washington, DC, 20037

Phone (202) 331-1234

Fax (202) 331-9390

Enumeration date Jul 19, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD4470 (DC) Primary

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

Is NPI 1962401109 active?

Yes, as of the latest NPPES snapshot, NPI 1962401109 is active (record last updated 2007-07-08).

How do I verify Stanley Knoll's NPI record?

Cross-check NPI 1962401109 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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