TAMMY MARIE ESTES
NPI 1457840498
Marriage & Family Therapist in Fairfield, CA
About Tammy Marie Estes NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAMMY MARIE ESTES (NPI 1457840498) is an individual marriage & family therapist in Fairfield, California, licensed in California (IMF100905) and active in the NPI registry since May 2018. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Tammy Marie Estes is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Tammy Estes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95113
- Reassigned Medicare billing, California enrollment
- 3,139 clinicians in this Medicare group
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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FAIRFIELD, CA 94533
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 Estes's NPI number?
The NPI number for Tammy Estes is 1457840498. It was assigned to this individual provider in the NPPES registry on May 4, 2018.
Where is Tammy Estes located?
Tammy Estes practices at 1735 Enterprise Dr Ste 105A, Fairfield, CA 94533. The listed phone number is (707) 425-1799.
What is Tammy Estes's specialty?
The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.
Is Tammy Estes enrolled in Medicare?
Yes. Tammy Estes is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Tammy Estes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Estes reassigns Medicare benefits to Grow Healthcare Group PC (San Jose, 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 Tammy Estes'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 Tammy Estes was last updated on May 4, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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 Marie Estes · NPI 1457840498
Marriage & Family Therapist provider in Fairfield, California. Individual provider, active in the CMS NPPES registry since May 4, 2018.
## Identity
- **NPI:** 1457840498 (Entity type: Individual)
- **Enumerated:** May 4, 2018
- **Primary specialty:** Marriage & Family Therapist · taxonomy 106H00000X
- **State license:** IMF100905 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1735 ENTERPRISE DR STE 105A, Fairfield, CA 94533-6822
- **Phone:** (707) 425-1799
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Grow Healthcare Group PC (NPI 1154994846, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 4, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1457840498) · Data from the CMS NPPES public registry.