Active NPI
Kristen Marxen Matsik, MD
- Obstetrics & Gynecology Physician
- Palo Alto, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Obstetrics & Gynecology Physician
- License
- 85200
- Practice address
- 195 Page Mill Rd Ste 103
Palo Alto, CA 94306-2073 - Phone
- (888) 731-8994
- NPI assigned
- Nov 15, 2006
- Sex
- Female
- 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 |
|---|---|---|---|---|
| Obstetrics & Gynecology Physician | 207V00000X | 85200 | SC | Primary |
Addresses
Primary practice location
195 Page Mill Rd Ste 103
Palo Alto, CA 94306-2073
Mailing address
195 Page Mill Rd Ste 103
Palo Alto, CA 94306-2073
Phone (888) 731-8994
Other practice location 1
4000 Faber Place Dr Ste 300
Charleston, SC 29405-8587
Phone (888) 731-8994
Other names 1
- Kristen Ann Marxen
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA, SC
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care CompareMerit-based Incentive Payment System (MIPS)
- Final score
- 84.73 of 100
- Quality
- 73.04
- Promoting interoperability
- 99
- Improvement activities
- 40
- Cost
- 76.89
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 85200 | SC | MD | Obstetrics & Gynecology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| University Medical Associates of the Medical University of South Carol | Current | Accepting new patients | |
| Obhg South Carolina PC | Obstetrics & Gynecology | Current | Accepting new patients |
| Uwh of the Carolinas, PLLC | Obstetrics & Gynecology | Current | Accepting new patients |
| Prima Medical Foundation | Current | Accepting new patients | |
| University Medical Associates of the Medical University of South Carol | Current | Accepting new patients |
Locations
1260 S Eliseo Dr
Fl 2
Greenbrae, CA 94904
Phone (415) 464-1350
250 Bon Air Rd
Kentfield, CA 94904
Phone (415) 464-1350
9 Commercial Blvd
Ste 200
Novato, CA 94949
Phone (415) 680-5328
1027 Physicians Dr
Ste 110
Charleston, SC 29414
Phone (843) 740-6700
171 Ashley Ave
Charleston, SC 29425
Phone (843) 792-2123
809 82nd Pkwy
Myrtle Beach, SC 29572
Phone (843) 291-7182
9330 Medical Plaza Dr
North Charleston, SC 29406
Phone (843) 554-6366
295 Midland Pkwy
Summerville, SC 29485
Phone (843) 554-6366
Organizations & group practices 5
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.
-
- Clinic/Center
- Novato, CA
- NPI 1811217946
-
- Obstetrics & Gynecology Physician
- Greenville, SC
- NPI 1538457361
-
dba MUSC Physicians
- Multi-Specialty Clinic/Center
- Charleston, SC
- NPI 1043241110
-
dba MUSC PHysicians
- Family Medicine Physician
- Charleston, SC
- NPI 1982678496
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1163548800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1762387200000",
"number": "1295807022",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "195 PAGE MILL RD STE 103",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943062073",
"telephone_number": "888-731-8994"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "195 PAGE MILL RD STE 103",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943062073",
"telephone_number": "888-731-8994"
}
],
"practiceLocations": [
{
"address_1": "4000 Faber Place Dr Ste 300",
"address_purpose": "LOCATION",
"city": "Charleston",
"state": "SC",
"postal_code": "294058587",
"country_code": "US",
"telephone_number": "888-731-8994",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MATSIK",
"first_name": "KRISTEN",
"middle_name": "MARXEN",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-11-15",
"last_updated": "2025-11-06",
"certification_date": "2025-11-06",
"status": "A"
},
"taxonomies": [
{
"code": "207V00000X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology",
"state": "SC",
"license": "85200",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "KRISTEN",
"last_name": "MARXEN",
"middle_name": "ANN",
"code": "1",
"type": "Former Name"
}
]
}
Other providers in Palo Alto, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 6, 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.
- 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.