Gretchen Nonawzki, DO
NPI 1871159392 · Emergency Medicine Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gretchen Nonawzki, DO is a Emergency Medicine Physician provider in Sacramento, CA (NPI 1871159392).
Provider details
- NPI number
- 1871159392
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A23881 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 14 | 14 |
| Prednisone | 13 | 13 |
| Doxycycline Hyclate | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-05-10
- Last updated
- 2025-07-02
- Certified
- 2025-07-02
Frequently asked questions
- What is Gretchen Nonawzki's NPI number?
- Gretchen Nonawzki's National Provider Identifier (NPI) is 1871159392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Nonawzki's specialty?
- Gretchen Nonawzki is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gretchen Nonawzki located?
- Gretchen Nonawzki's practice location on file with NPPES is 2025 Morse Ave, Sacramento, CA 95825-2115.
- What is Gretchen Nonawzki's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Nonawzki is (916) 973-5000.
- Does Gretchen Nonawzki accept Medicare?
- Gretchen Nonawzki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gretchen Nonawzki's NPI active?
- Yes — Gretchen Nonawzki's NPI (1871159392) is active in the NPPES registry as of the last update on 2025-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.