Active NPI
Jessica Ashley Jeanene Williams, MD
- Pediatric Nephrology Physician
- Palo Alto, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatric Nephrology Physician
- License
- A174461
- Practice address
- 725 Welch Rd
Palo Alto, CA 94304-1601 - Phone
- (650) 497-8000
- NPI assigned
- Apr 10, 2018
- Last updated
- Sep 8, 2025
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | A174461 | CA | |
| Pediatric Nephrology Physician | 2080P0210X | A174461 | CA | Primary |
Addresses
Primary practice location
725 Welch Rd
Palo Alto, CA 94304-1601
Mailing address
725 Welch Rd
Palo Alto, CA 94304-1601
Phone (650) 497-8000
Other practice location 1
701 Lawrence Expy
Santa Clara, CA 95051-5173
Phone (408) 554-9810
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| SOAP URL | https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ncalceq | Health Information Exchange (HIE) |
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
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A174461 | CA | MD | Pediatric Nephrology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Permanente Medical Group Inc | Pediatrics | Current | Accepting new patients |
| UCSF Medical Group Business Services | Current | Accepting new patients | |
| UCSF Pediatrics Associates | Pediatrics | Current | Accepting new patients |
| LPCH Medical Group Div of Lucile | Pediatrics | Current | Accepting new patients |
| Stanford Health Care | Pediatrics | Current | Accepting new patients |
| UCSF Medical Group Business Services | Current | Accepting new patients | |
| Permanente Medical Group, Inc | Current | Accepting new patients | |
| University of California San Francisco | Current | Accepting new patients | |
| Stanford Health Care | Current | Accepting new patients | |
| Permanente Medical Group Inc | Pediatrics | Current | Accepting new patients |
| University of California San Francisco | Pediatrics | Current | Accepting new patients |
Locations
750 Auburn Ravine Rd
Auburn, CA 95603
Phone (530) 823-6131
4753 W Shaw Ave
Ste 101
Fresno, CA 93722
Phone (559) 277-8738
900 N Douty St
Hanford, CA 93230
Phone (559) 587-9014
725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979
770 Welch Rd
Palo Alto, CA 94304
Phone (650) 498-4069
101 Monroe St
Petaluma, CA 94954
Phone (707) 763-4109
1150 Veterans Blvd
Redwood City, CA 94063
Phone (650) 299-2015
901 Nevin Ave
Richmond, CA 94801
Phone (510) 307-1500
930 W Main St
Ripon, CA 95366
Phone (209) 599-4221
501 J St
Sacramento, CA 95814
Phone (916) 497-3000
2200 Ofarrell St
San Francisco, CA 94115
Phone (415) 202-2000
2330 Post St
San Francisco, CA 94115
Phone (415) 502-4444
400 Parnassus Ave
#A632
San Francisco, CA 94143
Phone (415) 473-1000
505 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-9058
550 16th St
Fl 4
San Francisco, CA 94143
Phone (415) 476-5001
710 Lawrence Expy
Santa Clara, CA 95051
Phone (408) 236-6400
5615 Scotts Valley Dr
Scotts Valley, CA 95066
Phone (831) 430-2700
300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710
7373 West Ln
Stockton, CA 95210
Phone (209) 476-2000
975 Sereno Dr
Vallejo, CA 94589
Phone (707) 651-1000
320 N Crawford St
Willows, CA 95988
Phone (530) 934-2834
Organizations & group practices 11
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.
-
dba Lucile Salter Packard Children's Hospital at Stanford
- Children's Hospital
- Palo Alto, CA
- NPI 1417907940
Pediatrics
-
dba Stanford Medical Center A Trade Name for Stanford Health Care
- General Acute Care Hospital
- Stanford, CA
- NPI 1437292927
Pediatrics
-
- Internal Medicine Physician
- San Francisco, CA
- NPI 1477624104
-
dba UCSF Medical Center
- Pediatrics Physician
- San Francisco, CA
- NPI 1376614016
-
dba UCSF Pediatrics Group
- Pediatrics Physician
- San Francisco, CA
- NPI 1861578973
-
- Internal Medicine Physician
- San Francisco, CA
- NPI 1841373800
Pediatrics
-
- Clinical Medical Laboratory
- San Jose, CA
- NPI 1497971584
-
dba Stanford Health Care Specialty Pharmacy
- Specialty Pharmacy
- Mountain View, CA
- NPI 1760366132
-
dba UCSF Orthotic and Prosthetic Center - Gateway Medical Building
- Health Service Clinic/Center
- San Francisco, CA
- NPI 1194115246
-
dba UCSF Outpatient Pharmacy at Parnassus
- Community/Retail Pharmacy
- San Francisco, CA
- NPI 1659141711
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1523318400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757289600000",
"number": "1114424710",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "725 WELCH RD",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943041601",
"telephone_number": "650-497-8000"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "725 WELCH RD",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943041601",
"telephone_number": "650-497-8000"
}
],
"practiceLocations": [
{
"address_1": "701 Lawrence Expy",
"address_purpose": "LOCATION",
"city": "Santa Clara",
"state": "CA",
"postal_code": "950515173",
"country_code": "US",
"telephone_number": "408-554-9810",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "WILLIAMS",
"first_name": "JESSICA ASHLEY",
"middle_name": "JEANENE",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2018-04-10",
"last_updated": "2025-09-08",
"certification_date": "2025-09-08",
"status": "A"
},
"taxonomies": [
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "CA",
"license": "A174461",
"primary": false
},
{
"code": "2080P0210X",
"taxonomy_group": "",
"desc": "Pediatrics, Pediatric Nephrology",
"state": "CA",
"license": "A174461",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "SOAP",
"endpointTypeDescription": "SOAP URL",
"endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ncalceq",
"affiliation": "N",
"endpointDescription": "Carequality",
"use": "HIE",
"useDescription": "Health Information Exchange (HIE)",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "C-CDA",
"address_1": "701 Lawrence Expy",
"city": "Santa Clara",
"state": "CA",
"country_code": "US",
"postal_code": "950515173",
"country_name": "United States",
"address_type": "DOM"
}
],
"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 Sep 8, 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.