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

Daniel Unger Thuillier, M.D.

Orthopaedic Surgery Physician in San Francisco, CA · enumerated 2009.

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

National Provider Identifier

1598093304

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Registry record

Entity type Individual (Type 1)

Name Daniel Unger Thuillier

Credential M.D.

Sex Male

Practice address San Francisco, CA, 94158

Phone (415) 353-9400

Enumeration date Dec 7, 2009

Last updated in NPPES Mar 26, 2020

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

Taxonomy & licenses

207XX0004X Orthopaedic Foot and Ankle Surgery Physician Allopathic & Osteopathic Physicians · License MD60332739 (WA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License A108153 (CA) 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
CX216Y	Other	-	MEDICARE
CX216Z	Other	-	MEDICARE
CX216X	Other	-	MEDICARE

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.

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Frequently asked questions

How do I verify Daniel Thuillier's NPI record?

Cross-check NPI 1598093304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1598093304 active?

Yes, as of the latest NPPES snapshot, NPI 1598093304 is active (record last updated 2020-03-26).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-26.