MRS. TAMMI KAY MCCOMAK FNP
NPI 1679553804
Nurse Practitioner - Family in Tracy, CA
About Mrs. Tammi Kay Mccomak Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. TAMMI KAY MCCOMAK FNP (NPI 1679553804) is an individual family provider in Tracy, California, licensed in California (15459) and active in the NPI registry since January 2006. 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)
Mrs. Tammi Kay Mccomak Fnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Tammi Mccomak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tracy, CA 95376
- Reassigned Medicare billing, California enrollment
- 57 clinicians in this Medicare group
Tracy, CA 95376
- Reassigned Medicare billing, California enrollment
- 2,323 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95376 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TRACY, CA 95376
TRACY, CA 95376
TRACY, CA 95376
TRACY, CA 95376
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 Tammi Mccomak's NPI number?
The NPI number for Tammi Mccomak is 1679553804. It was assigned to this individual provider in the NPPES registry on January 23, 2006.
Where is Tammi Mccomak located?
Tammi Mccomak practices at 530 W Eaton Ave Suite K, Tracy, CA 95376. The listed phone number is (209) 835-4232.
What is Tammi Mccomak's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Tammi Mccomak enrolled in Medicare?
Yes. Tammi Mccomak is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Tammi Mccomak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammi Mccomak reassigns Medicare benefits to 2 organizations: Altamont Emergency Physicians Medical Group Inc (Tracy, CA) and Cep America-California (Tracy, CA). Each 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 Tammi Mccomak'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 Tammi Mccomak was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mrs. Tammi Kay Mccomak, FNP · NPI 1679553804
Family physician in Tracy, California. Individual provider, active in the CMS NPPES registry since January 23, 2006.
## Identity
- **NPI:** 1679553804 (Entity type: Individual)
- **Enumerated:** January 23, 2006
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 15459 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 530 W EATON AVE, SUITE K, Tracy, CA 95376-3400
- **Phone:** (209) 835-4232
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Altamont Emergency Physicians Medical Group Inc (NPI 1952392375, Tracy, CA); Cep America-California (NPI 1629814736, Tracy, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1679553804) · Data from the CMS NPPES public registry.