Individual Healthcare Provider
Tammy Ann Winchell, A.R.N.P
Provider's NPPES record last updated: June 6, 2025
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1679673347
- Primary Specialty
- Nurse Practitioner — Pediatrics
- Practice Location
- Mill Valley, California
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 18, 2026, 9:18 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Nurse Practitioner
Pediatrics
Physician Assistants & Advanced Practice Nursing Providers
Definition to come...
Taxonomy code 363LP0200X
Provider-Reported License Information
- Nurse Practitioner (Washington)
- AP30007401
- Nurse Practitioner (California)
- NP95000700
- Nurse Practitioner (Oregon)
- 201150050NP
Practice Locations
Practice Location
750 Redwood Hwy Frontage Rd Ste 1204
Mill Valley, California 94941-2483
Phone: (415) 384-4778
Additional Practice Location
1201 W La Veta Ave
Orange, California 92868-4203
Phone: (714) 509-7601
Fax: (714) 509-7650
Additional Practice Location
1201 W La Veta Ave
Orange, California 92868-4203
Phone: (714) 509-7601
Fax: (714) 509-7650
Record Information
- Enumeration Date
- September 23, 2006
- Provider's NPPES Record Last Updated
- June 6, 2025
- Certification Date
- June 6, 2025
- NPISignal NPPES Dataset
- August 2026
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