Active NPI
Roger Holowach
- Physician Assistant
- Petoskey, MI
National Provider Identifier
1902748411
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- Practice address
- 516 Kalamazoo Ave
Petoskey, MI 49770-2743 - Phone
- (231) 340-4945
- NPI assigned
- Apr 6, 2026
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Physician Assistant | 363A00000X | Primary |
Addresses
Primary practice location
516 Kalamazoo Ave
Petoskey, MI 49770-2743
Mailing address
516 Kalamazoo Ave
Petoskey, MI 49770-2743
Phone (231) 340-4945
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1775433600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1775433600000",
"number": "1902748411",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "516 KALAMAZOO AVE",
"city": "PETOSKEY",
"state": "MI",
"postal_code": "497702743",
"telephone_number": "231-340-4945"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "516 KALAMAZOO AVE",
"city": "PETOSKEY",
"state": "MI",
"postal_code": "497702743",
"telephone_number": "231-340-4945"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HOLOWACH",
"first_name": "ROGER",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-04-06",
"last_updated": "2026-04-06",
"certification_date": "2026-04-06",
"status": "A"
},
"taxonomies": [
{
"code": "363A00000X",
"taxonomy_group": "",
"desc": "Physician Assistant",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Petoskey, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.