John Zawacki, PAC
NPI 1831321090 · Physician Assistant · Detroit, MI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Zawacki, PAC is a Physician Assistant provider in Detroit, MI (NPI 1831321090).
Provider details
- NPI number
- 1831321090
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PAC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5601001334 (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 tenure33% of score
16 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 145 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 649 | 147 |
| Amlodipine Besylate | 616 | 118 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 598 | 126 |
| Famotidine | 440 | 108 |
| Metoprolol Tartrate | 433 | 81 |
| Furosemide | 413 | 75 |
| Atorvastatin Calcium | 405 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$236 across 12 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-08-20
- Last updated
- 2025-09-29
- Certified
- 2025-09-29
Frequently asked questions
- What is John Zawacki's NPI number?
- John Zawacki's National Provider Identifier (NPI) is 1831321090, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Zawacki's specialty?
- John Zawacki is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Zawacki located?
- John Zawacki's practice location on file with NPPES is 8631 W Vernor Hwy Ste 1a, Detroit, MI 48209-3420.
- What is John Zawacki's phone number?
- The practice phone number listed in the NPPES registry for John Zawacki is (313) 889-2000.
- Does John Zawacki accept Medicare?
- John Zawacki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Zawacki's NPI active?
- Yes — John Zawacki's NPI (1831321090) is active in the NPPES registry as of the last update on 2025-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.