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

Lori J. Wynstock, M.D.

Internal Medicine Physician in Pasadena, CA · enumerated 2006 · practices at David R Martin MD, Inc.

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

National Provider Identifier

1194764589

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Registry record

Entity type Individual (Type 1)

Name Lori J. Wynstock

Credential M.D.

Sex Female

Practice address Pasadena, CA, 91105

Phone (626) 793-6113

Fax (626) 793-8013

Enumeration date Jun 4, 2006

Last updated in NPPES Mar 31, 2017

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A63397 (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
P00069309	Other	CA	RAILROAD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1194764589 active?

Yes, as of the latest NPPES snapshot, NPI 1194764589 is active (record last updated 2017-03-31).

How do I verify Lori Wynstock's NPI record?

Cross-check NPI 1194764589 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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David R Martin MD, Inc Surgery Physician · Pasadena, CA NPI 1982885125

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-31.