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TAMARA JANE THISSEN BSN, RN-C, CEN, AMB-
NPI 1710858436
Registered Nurse - Emergency in Petaluma, CA

Active since September 16, 2025PECOS Enrolled
400 N MCDOWELL BLVD, PETALUMA, CA 94954(707) 778-1111 Get Directions Write a Review

NPPES record last updated: September 16, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Tamara Jane Thissen Bsn, Rn-c, Cen, Amb- NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TAMARA JANE THISSEN BSN, RN-C, CEN, AMB- (NPI 1710858436) is an individual emergency provider in Petaluma, California, licensed in California (725175) and active in the NPI registry since September 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2026).

NPPES Registry Identity

NPI1710858436
Entity TypeIndividualFemale
Primary Taxonomy163WE0003X
Provider Legal NameTAMARA JANE THISSENCredential: BSN, RN-C, CEN, AMB-
Location Address400 N MCDOWELL BLVDPetaluma, CA 94954-2339
Mailing Address122 Brooktrail CtSanta Rosa, CA 95409-2763 · (707) 778-1111
Phone(707) 778-1111
Sole ProprietorNo
Medical School CMSOtherGraduated 2026
Enumeration DateSeptember 16, 2025
NPPES CertifiedSeptember 16, 2025
✔ NPI 1710858436 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRegistered Nurse · EmergencyNursing Service Providers
Taxonomy Code163WE0003X
License✔ Licensed in CA · 725175
400 N MCDOWELL BLVD, Petaluma, CA 94954
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tamara Jane Thissen Bsn, Rn-c, Cen, Amb- is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7214492420
PECOS Enrollment IDI20260717003888
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Tamara Thissen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Post Acute Rehabilitation Doctors PC
40 mi
Physical Medicine & Rehabilitation
1226 ROSSMOOR PKWY
Walnut Creek, CA 94595
  • Reassigned Medicare billing, California enrollment
  • 15 clinicians in this Medicare group
NPI 1164156931 (801) 215-9309

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NICHOLAS BAUTISTA RN
Registered Nurse
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. DONALD SCOTT SCHMIDT M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. EARL HERR M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. MICHAELA SHEPPHARD M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
ANDREW K CHINNOCK FNP
Nurse Practitioner
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 776-8066
ROBERT I OSTROFF MD INC
General Acute Care Hospital
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
LAWRENCE KAIQI HOU DO
Family Medicine
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111
DR. HENRY LOREN FONG M.D.
Emergency Medicine (Emergency Medical Services)
400 N MCDOWELL BLVD
PETALUMA, CA 94954
Sonoma County (707) 778-1111

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 Tamara Thissen's NPI number?

The NPI number for Tamara Thissen is 1710858436. It was assigned to this individual provider in the NPPES registry on September 16, 2025.

Where is Tamara Thissen located?

Tamara Thissen practices at 400 N Mcdowell Blvd, Petaluma, CA 94954. The listed phone number is (707) 778-1111.

What is Tamara Thissen's specialty?

The primary specialty registered for this NPI is Registered Nurse, specializing in Emergency, with taxonomy code 163WE0003X.

Is Tamara Thissen enrolled in Medicare?

Yes. Tamara Thissen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tamara Thissen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tamara Thissen reassigns Medicare benefits to Post Acute Rehabilitation Doctors PC (Walnut Creek, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tamara Thissen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Tamara Thissen was last updated on September 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.