TAMMY RENEE WEGRZYN NP
NPI 1801123914
Nurse Practitioner - Family in Riverside, CA
About Tammy Renee Wegrzyn Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAMMY RENEE WEGRZYN NP (NPI 1801123914) is an individual family provider in Riverside, California, licensed in California (19081) and active in the NPI registry since November 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2009).
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 and accepts Medicare assignment
Tammy Renee Wegrzyn Np is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Tammy Wegrzyn reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Corona, CA 92882
- Reassigned Medicare billing, California enrollment
- 4 clinicians in this Medicare group
Riverside, CA 92506
- Reassigned Medicare billing, California enrollment
- 30 clinicians in this Medicare group
Irvine, CA 92618
- Reassigned Medicare billing, California enrollment
- 89 clinicians in this Medicare group
Newport Beach, CA 92663
- Reassigned Medicare billing, California enrollment
- 529 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 2
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 92505 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.
RIVERSIDE, CA 92505
RIVERSIDE, CA 92505
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 Wegrzyn's NPI number?
The NPI number for Tammy Wegrzyn is 1801123914. It was assigned to this individual provider in the NPPES registry on November 10, 2009.
Where is Tammy Wegrzyn located?
Tammy Wegrzyn practices at 11705 Slate Ave Suite 200, Riverside, CA 92505. The listed phone number is (800) 274-3893.
What is Tammy Wegrzyn's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Tammy Wegrzyn enrolled in Medicare?
Yes. Tammy Wegrzyn is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Tammy Wegrzyn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Wegrzyn reassigns Medicare benefits to 4 organizations: Skilled Provider Network (Corona, CA), Optima Health Corp (Riverside, CA), Hmts, Inc (Irvine, CA) and Hoag Clinic (Newport Beach, 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 Tammy Wegrzyn'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 Wegrzyn was last updated on February 9, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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 Renee Wegrzyn, NP · NPI 1801123914
Family physician in Riverside, California. Individual provider, active in the CMS NPPES registry since November 10, 2009.
## Identity
- **NPI:** 1801123914 (Entity type: Individual)
- **Enumerated:** November 10, 2009
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 19081 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 11705 SLATE AVE, SUITE 200, Riverside, CA 92505-5196
- **Phone:** (800) 274-3893
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Skilled Provider Network (NPI 1528913597, Corona, CA); Optima Health Corp (NPI 1245892066, Riverside, CA); Hmts, Inc (NPI 1326828575, Irvine, CA); Hoag Clinic (NPI 1942799523, Newport Beach, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** February 9, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1801123914) · Data from the CMS NPPES public registry.