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

Dr. Stephen Michael Nenninger, NMD

General Practice Physician in Montecito, CA · enumerated 2009.

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

National Provider Identifier

1295069318

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Michael Nenninger

Credential NMD

Sex Male

Practice address Montecito, CA, 93108

Phone (631) 235-2111

Fax (631) 540-2345

Enumeration date Sep 22, 2009

Last updated in NPPES Dec 19, 2023

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

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 05-869 (AZ) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 369 (CA) Primary

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 Stephen Nenninger?

The National Provider Identifier (NPI) for Stephen Nenninger is 1295069318, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Nenninger practice?

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

Other providers at this practice address

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Katherine Wolfe Athletic Trainer · Santa Barbara, CA NPI 1972569093 Nicole Rea Physical Therapy Clinic/Center · Montecito, CA NPI 1013941046 Carol Del Ciello Anesthesiology Physician · Santa Barbara, CA NPI 1619061553 Constance Ratliffe Clinical Psychologist · Santa Barbara, CA NPI 1811194780 Beverly Jacobson Addiction (Substance Use Disorder) Counselor · Montecito, CA NPI 1417144056 Andrea Gurney Psychologist · Santa Barbara, CA NPI 1477701811 Eva Van Prooyen Marriage & Family Therapist · Santa Barbara, CA NPI 1962643940 Santa Barbara X-Ray Portable X-ray and/or Other Portable Diagnostic Imaging Supplier · Santa Barbara, CA NPI 1487898649

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-19.