Marcus Wollak
NPI 1417572827 · Physician Assistant · South Haven, MI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcus Wollak is a Physician Assistant provider in South Haven, MI (NPI 1417572827).
Provider details
- NPI number
- 1417572827
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 5601010639 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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 · 122 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 588 | 175 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 281 | 48 |
| Lisinopril | 278 | 89 |
| Omeprazole | 239 | 90 |
| Amlodipine Besylate | 230 | 78 |
| Losartan Potassium | 218 | 63 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$251 across 14 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
Additional practice locations (1)
- 4015 Damon CtEau Claire, WI 54701-3035Phone: (715) 225-2377
Registry dates
- Enumerated
- 2020-06-11
- Last updated
- 2021-10-27
- Certified
- 2021-06-24
Frequently asked questions
- What is Marcus Wollak's NPI number?
- Marcus Wollak's National Provider Identifier (NPI) is 1417572827, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcus Wollak's specialty?
- Marcus Wollak is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marcus Wollak located?
- Marcus Wollak's practice location on file with NPPES is 930 Blue Star Hwy, South Haven, MI 49090-7758.
- What is Marcus Wollak's phone number?
- The practice phone number listed in the NPPES registry for Marcus Wollak is (269) 637-1115.
- Does Marcus Wollak accept Medicare?
- Marcus Wollak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcus Wollak's NPI active?
- Yes — Marcus Wollak's NPI (1417572827) is active in the NPPES registry as of the last update on 2021-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.