Active NPI
James David Mikolajczak, D.O.
- Family Medicine Physician
- Tucson, AZ
National Provider Identifier
1013279587
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- License
- 010430
- Practice address
- 320 W Prince Rd
Tucson, AZ 85705-3526 - Phone
- (520) 670-3909
- Fax
- (520) 309-2560
- NPI assigned
- Jun 11, 2012
- 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 |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | 010430 | AZ | Primary |
Addresses
Primary practice location
320 W Prince Rd
Tucson, AZ 85705-3526
Mailing address
839 W Congress St
Tucson, AZ 85745-2819
Phone (520) 670-3909
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in AZ
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Family Practice
- Education
- Arizona College of Osteopathic Medicine Mid Western University, 2012
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
839 W Congress St
Tucson, AZ 85745-2819
Phone (520) 670-3909
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 010430 | AZ | MD | Family Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| 4 Pillars Medicine PLLC | Family Medicine | Current | Accepting new patients |
Networks
- NM HMO C-SNP
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Federally Qualified Health Center (FQHC)
- Tucson, AZ
- NPI 1487602736
-
- Family Medicine Physician
- Tucson, AZ
- NPI 1013866995
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1339372800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1773792000000",
"number": "1013279587",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "839 W CONGRESS ST",
"city": "TUCSON",
"state": "AZ",
"postal_code": "857452819",
"telephone_number": "520-670-3909",
"fax_number": "520-309-2560"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "320 W PRINCE RD",
"city": "TUCSON",
"state": "AZ",
"postal_code": "857053526",
"telephone_number": "520-670-3909",
"fax_number": "520-309-2560"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MIKOLAJCZAK",
"first_name": "JAMES",
"middle_name": "DAVID",
"name_prefix": "Dr.",
"credential": "D.O.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2012-06-11",
"last_updated": "2026-03-18",
"certification_date": "2026-03-18",
"status": "A"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "AZ",
"license": "010430",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Tucson, AZ
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.