Tammy Wegrzyn, NP
NPI 1801123914 · Family Nurse Practitioner · Riverside, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Wegrzyn, NP is a Family Nurse Practitioner provider in Riverside, CA (NPI 1801123914).
Provider details
- NPI number
- 1801123914
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 19081 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
33 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 22 | $84 |
| Automated Urinalysis Test81003 | 11 | $2 |
Typical Medicare-allowed amounts for these services range $2–$84 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 60 |
| Rivaroxabanbrand: Xarelto | 49 |
| Insulin Lisprobrand: Humalog Kwikpen U-100 | 39 |
| Levothyroxine Sodium | 38 |
| Metoprolol Tartrate | 36 |
| Famotidine | 33 |
| Furosemide | 33 |
| Gabapentin | 32 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-11-10
- Last updated
- 2011-02-09
Frequently asked questions
- What is Tammy Wegrzyn's NPI number?
- Tammy Wegrzyn's National Provider Identifier (NPI) is 1801123914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Wegrzyn's specialty?
- Tammy Wegrzyn is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tammy Wegrzyn located?
- Tammy Wegrzyn's practice location on file with NPPES is 11705 Slate Ave, Riverside, CA 92505-5196.
- What is Tammy Wegrzyn's phone number?
- The practice phone number listed in the NPPES registry for Tammy Wegrzyn is (800) 274-3893.
- Does Tammy Wegrzyn accept Medicare?
- Tammy Wegrzyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Wegrzyn's NPI active?
- Yes — Tammy Wegrzyn's NPI (1801123914) is active in the NPPES registry as of the last update on 2011-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.