TAMMY ANN WINCHELL A.R.N.P
NPI 1679673347
Nurse Practitioner - Pediatrics in Mill Valley, CA
About Tammy Ann Winchell A.r.n.p NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAMMY ANN WINCHELL A.R.N.P (NPI 1679673347) is an individual pediatrics provider in Mill Valley, California, licensed in Washington (AP30007401) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tammy Ann Winchell A.r.n.p is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94941 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILL VALLEY, CA 94941
MILL VALLEY, CA 94941
MILL VALLEY, CA 94941
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Tammy Winchell's NPI number?
The NPI number for Tammy Winchell is 1679673347. It was assigned to this individual provider in the NPPES registry on September 23, 2006. The provider is also known as Tammy Ann Herschler.
Where is Tammy Winchell located?
Tammy Winchell practices at 750 Redwood Hwy Frontage Rd Ste 1204, Mill Valley, CA 94941. The listed phone number is (415) 384-4778.
What is Tammy Winchell's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Tammy Winchell enrolled in Medicare?
Yes. Tammy Winchell is registered in the Medicare PECOS enrollment system.
What insurance does Tammy Winchell accept?
Health plans from BridgeSpan Health Company, Moda Health Plan, Inc. and Regence BlueCross BlueShield of Oregon list Tammy Winchell as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Tammy Winchell was last updated on June 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Tammy Ann Winchell, A.R.N.P · NPI 1679673347
Pediatrics physician in Mill Valley, California. Individual provider, active in the CMS NPPES registry since September 23, 2006.
## Identity
- **NPI:** 1679673347 (Entity type: Individual)
- **Enumerated:** September 23, 2006
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** AP30007401 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 750 REDWOOD HWY FRONTAGE RD STE 1204, Mill Valley, CA 94941-2483
- **Phone:** (415) 384-4778 · **Fax:** (415) 384-4779
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
## Record status
- **NPPES last updated:** June 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1679673347) · Data from the CMS NPPES public registry.