Active NPI
Stephen Patrick Markowski, AGPCNP
- Nurse Practitioner
- Waltham, MA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nurse Practitioner
- License
- RN2371065
- Practice address
- 281 Winter St FL 2
Waltham, MA 02451-8740 - Phone
- (781) 373-2940
- NPI assigned
- Apr 26, 2021
- Last updated
- May 12, 2026
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Primary Care Nurse Practitioner | 363LP2300X | 95015353 | CA | |
| Registered Nurse | 163W00000X | RN2371065 | MA | |
| Nurse Practitioner | 363L00000X | RN2371065 | MA | Primary |
Addresses
Primary practice location
281 Winter St FL 2
Waltham, MA 02451-8740
Mailing address
281 Winter St FL 2
Waltham, MA 02451-8740
Phone (781) 373-2940
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA, MA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Nurse Practitioner
- Education
- Other, 2020
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
133 Old Rd to 9 Acre Cor
Concord, MA 01742-4159
Phone (978) 287-3020
99 Lincoln St
Framingham, MA 01702-6327
Phone (508) 875-4811
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| RN2371065 | MA | MD | Registered Nurse |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Albion Medical Partners of California West P C | Current | Accepting new patients | |
| Heart Center of Metrowest Inc | Current | Accepting new patients |
Locations
12900 Park Plaza Dr
Ste 150
Cerritos, CA 90703
Phone (562) 622-2800
12900 Park Plaza Dr
Ste 700
Cerritos, CA 90703
Phone (562) 622-2800
99 Lincoln St
Framingham, MA 01702
Phone (508) 875-4811
Interoperability endpoints
- stephen.markowski.p1@direct.caremorewest.nextgenshare.com
Organizations & group practices 3
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Cardiovascular Disease Physician
- Framingham, MA
- NPI 1598756132
-
- Internal Medicine Physician
- Concord, MA
- NPI 1508020199
-
dba CareMore Health Medical Partners West, PC
- Internal Medicine Physician
- Cerritos, CA
- NPI 1073110607
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1619395200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1778544000000",
"number": "1366024523",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "281 WINTER ST FL 2",
"city": "WALTHAM",
"state": "MA",
"postal_code": "024518740",
"telephone_number": "781-373-2940"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "281 WINTER ST FL 2",
"city": "WALTHAM",
"state": "MA",
"postal_code": "024518740",
"telephone_number": "781-373-2940"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MARKOWSKI",
"first_name": "STEPHEN",
"middle_name": "PATRICK",
"name_prefix": "Mr.",
"credential": "AGPCNP",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2021-04-26",
"last_updated": "2026-05-12",
"certification_date": "2026-05-12",
"status": "A"
},
"taxonomies": [
{
"code": "363LP2300X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Primary Care",
"state": "CA",
"license": "95015353",
"primary": false
},
{
"code": "163W00000X",
"taxonomy_group": "",
"desc": "Registered Nurse",
"state": "MA",
"license": "RN2371065",
"primary": false
},
{
"code": "363L00000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner",
"state": "MA",
"license": "RN2371065",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Waltham, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 12, 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.