Active NPI
Alvin Walter Annen, MD
- Plastic and Reconstructive Surgery Physician
- Palo Alto, CA
National Provider Identifier
1699286468
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Plastic and Reconstructive Surgery Physician
- License
- A202598
- Practice address
- 300 Pasteur Dr
Palo Alto, CA 94305-2200 - Phone
- (650) 723-4000
- NPI assigned
- Oct 19, 2017
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Plastic and Reconstructive Surgery Physician | 2086S0122X | PG193909 | OR | |
| Plastic and Reconstructive Surgery Physician | 2086S0122X | A202598 | CA | Primary |
Addresses
Primary practice location
300 Pasteur Dr
Palo Alto, CA 94305-2200
Mailing address
300 Pasteur Dr
Palo Alto, CA 94305-2200
Phone (650) 723-4000
Other practice location 1
3181 SW Sam Jackson Park Rd
Portland, OR 97239-3011
Phone (503) 494-8311
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: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Plastic and Reconstructive Surgery
- Education
- Oregon Health Sciences University School of Medicine, 2019
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Mastectomy | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A202598 | CA | MD | Plastic and Reconstructive Surgery Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Stanford Health Care | Current | Accepting new patients | |
| Stanford Health Care | Single Specialty | Current | Accepting new patients |
| LPCH Medical Group Div of Lucile | Single Specialty | Current | Accepting new patients |
| Stanford Health Care | Current | Accepting new patients |
Locations
1000 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8856
725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979
300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710
Organizations & group practices 4
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.
-
- General Acute Care Hospital
- Emeryville, CA
- NPI 1275076325
-
- Specialty Pharmacy
- Mountain View, CA
- NPI 1760366132
Hospital & facility affiliations 7
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Emeryville, CA
- NPI 1275076325
-
- General Acute Care Hospital
- Emeryville, CA
- NPI 1285177337
-
- General Acute Care Hospital
- Stanford, CA
- NPI 1437292927
-
- General Acute Care Hospital
- Pleasanton, CA
- NPI 1467990465
-
- General Acute Care Hospital
- Stanford, CA
- NPI 1871543215
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1508371200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1754006400000",
"number": "1699286468",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "300 PASTEUR DR",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943052200",
"telephone_number": "650-723-4000"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "300 PASTEUR DR",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943052200",
"telephone_number": "650-723-4000"
}
],
"practiceLocations": [
{
"address_1": "3181 SW Sam Jackson Park Rd",
"address_purpose": "LOCATION",
"city": "Portland",
"state": "OR",
"postal_code": "972393011",
"country_code": "US",
"telephone_number": "503-494-8311",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "ANNEN",
"first_name": "ALVIN",
"middle_name": "WALTER",
"credential": "MD",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2017-10-19",
"last_updated": "2025-08-01",
"certification_date": "2025-08-01",
"status": "A"
},
"taxonomies": [
{
"code": "2086S0122X",
"taxonomy_group": "193400000X SINGLE SPECIALTY GROUP",
"desc": "Surgery, Plastic and Reconstructive Surgery",
"state": "OR",
"license": "PG193909",
"primary": false
},
{
"code": "2086S0122X",
"taxonomy_group": "",
"desc": "Surgery, Plastic and Reconstructive Surgery",
"state": "CA",
"license": "A202598",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}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 Aug 1, 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.