Zachary Retzler, PA
NPI 1972886703 · Medical Physician Assistant · Saginaw, MI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Retzler, PA is a Medical Physician Assistant provider in Saginaw, MI (NPI 1972886703).
Provider details
- NPI number
- 1972886703
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 5601006179 (MI)
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 tenure38% of score
14 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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 26 | 26 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 15 |
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
- 2011-09-28
- Last updated
- 2021-04-02
- Certified
- 2021-04-02
Frequently asked questions
- What is Zachary Retzler's NPI number?
- Zachary Retzler's National Provider Identifier (NPI) is 1972886703, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Retzler's specialty?
- Zachary Retzler is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Zachary Retzler located?
- Zachary Retzler's practice location on file with NPPES is 912 S Washington Ave, Saginaw, MI 48601-2564.
- What is Zachary Retzler's phone number?
- The practice phone number listed in the NPPES registry for Zachary Retzler is (989) 790-1001.
- Does Zachary Retzler accept Medicare?
- Zachary Retzler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Retzler's NPI active?
- Yes — Zachary Retzler's NPI (1972886703) is active in the NPPES registry as of the last update on 2021-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.