Active NPI
Peter J Underwood, MSN FNP- BC
- Family Nurse Practitioner
- Pasadena, CA
National Provider Identifier
1548069297
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Nurse Practitioner
- License
- NP95032901
- Practice address
- 556 S Fair Oaks Ave # 101-249
Pasadena, CA 91105-2656 - Phone
- (626) 482-0290
- NPI assigned
- Mar 13, 2025
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Nurse Practitioner | 363LF0000X | NP95032901 | CA | Primary |
Addresses
Primary practice location
556 S Fair Oaks Ave # 101-249
Pasadena, CA 91105-2656
Mailing address
556 S Fair Oaks Ave # 101-249
Pasadena, CA 91105-2656
Phone (626) 482-0290
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20250724003198 | CA | Practitioner - Nurse Practitioner | 4789191834 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Master of Science - Nursing, Nurse Practitioner
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| NP95032901 | CA | MD | Family Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| J M Geiss DO Apc | Current | Accepting new patients |
Locations
520 Superior Ave
Ste 255
Newport Beach, CA 92663
Phone (949) 720-9266
5 Hutton Centre Dr
Ste 950
Santa Ana, CA 92707
Phone (855) 434-7663
28650 Newhall Ranch Rd
Santa Clarita, CA 91355
Phone (661) 347-0051
Organizations & group practices 1
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.
-
- Family Medicine Physician
- Santa Ana, CA
- NPI 1063825289
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1741824000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1741824000000",
"number": "1548069297",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "556 S FAIR OAKS AVE # 101-249",
"city": "PASADENA",
"state": "CA",
"postal_code": "911052656",
"telephone_number": "626-482-0290"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "556 S FAIR OAKS AVE # 101-249",
"city": "PASADENA",
"state": "CA",
"postal_code": "911052656",
"telephone_number": "626-482-0290"
}
],
"practiceLocations": [],
"basic": {
"last_name": "UNDERWOOD",
"first_name": "PETER",
"middle_name": "J",
"name_prefix": "Mr.",
"credential": "MSN FNP- BC",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2025-03-13",
"last_updated": "2025-03-13",
"certification_date": "2025-03-13",
"status": "A"
},
"taxonomies": [
{
"code": "363LF0000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Family",
"state": "CA",
"license": "NP95032901",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Pasadena, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 13, 2025; 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.