NPIMap

Organization Active NPI

Golden State Dermatology Associates Inc

  • Dermatology Physician
  • Walnut Creek, CA
National Provider Identifier
1700860871
Registry record updated Oct 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Dermatology PhysicianTaxonomy code 207N00000X
Legal business name
GOLDEN STATE DERMATOLOGY ASSOCIATES INC
Practice address
355 Lennon LN Ste 255
Walnut Creek, CA 94598-2496
Phone
(925) 932-7704
Fax
(925) 932-7752
NPI assigned
Dec 2, 2005
Last updated
Oct 13, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Oct 13, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Jay William ZimmermanNPI 1396789731
Title
Provider
Phone
(925) 813-2971

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Dermatology PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207N00000X Primary
MOHS-Micrographic Surgery PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207ND0101X
Dermatopathology PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207ND0900X
Procedural Dermatology PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207NS0135X

Addresses

Primary practice location

355 Lennon LN Ste 255
Walnut Creek, CA 94598-2496

Mailing address

370 N Wiget LN Ste 250
Walnut Creek, CA 94598-2454
Phone (925) 945-7005

Other practice location 1

1542 N Tracy Blvd # A
Tracy, CA 95376-2903
Phone (209) 836-2220

Other practice location 2

2990 S Sepulveda Blvd Ste 300
Los Angeles, CA 90064-3996
Phone (323) 421-4747

Other practice location 3

5575 W Las Positas Blvd Ste 260
Pleasanton, CA 94588-5803
Phone (925) 847-3020

Other practice location 4

355 Lennon Ln Ste 235
Walnut Creek, CA 94598-2544
Phone (925) 357-9050

Other practice location 5

1200 Central Blvd Ste D
Brentwood, CA 94513-2227
Phone (925) 308-9510

Other practice location 6

17600 Monterey Rd Ste A
Morgan Hill, CA 95037-3669
Phone (669) 766-2021

Other practice location 7

5640 N Fresno St Ste 110
Fresno, CA 93710-6098
Phone (559) 266-9906

Other practice location 8

8735 Sierra College Blvd Ste 200
Roseville, CA 95661-5992
Phone (916) 721-2836

Other practice location 9

280 Baldwin Ave
San Mateo, CA 94401-3915
Phone (650) 727-6008

Other practice location 10

400 Taylor Blvd Ste 301
Pleasant Hill, CA 94523-2160
Phone (925) 687-8882

Other practice location 11

1058 Murrieta Blvd
Livermore, CA 94550-4111
Phone (925) 277-1300 ext. 92594

Other practice location 12

410 E Yosemite Ave Ste C
Merced, CA 95340-8220
Phone (209) 722-7801

Other practice location 13

230 N 1680 E Ste N1
St George, UT 84790-2596
Phone (925) 945-7005

Other practice location 14

2255 Ygnacio Valley Rd Ste B1
Walnut Creek, CA 94598-3335
Phone (925) 945-7005 ext. 92594

Other practice location 15

5201 Norris Canyon Rd
San Ramon, CA 94583-5411
Phone (925) 277-1300

Other practice location 16

8890 N Union Blvd Ste 207
Colorado Springs, CO 80920-2701
Phone (925) 945-7005

Other practice location 17

1324 Nelson Ave
Modesto, CA 95350-5374
Phone (209) 524-9481

Other practice location 18

355 Lennon Ln Ste 295
Walnut Creek, CA 94598-2563
Phone (925) 945-7005

Other practice location 19

6120 Mae Anne Ave Ste 1
Reno, NV 89523-4706
Phone (775) 746-0196

Other practice location 20

1000 Delbon Ave Ste 8
Turlock, CA 95382-2008
Phone (209) 722-7801

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20070523000605 CA Part B Supplier - Clinic/Group Practice 1052418175 Receives reassigned benefits from 151 practitioners
Practice locations: San Ramon, CA; Pleasanton, CA; San Mateo, CA; San Francisco, CA; Saint Helena, CA; Sacramento, CA; Roseville, CA; Rancho Mirage, CA…

Other NPIs with the same Medicare PAC ID 1

NPIs whose Medicare enrollments share a PECOS associate control ID (the same enrolled entity).

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
05D0596807Golden State Dermatology280 Baldwin Ave, San Mateo, CA 94401ComplianceJul 31, 2026
05D0701455Golden State Dermatology Associates Inc1324 Nelson Ave Ste B, Modesto, CA 95350RegistrationNov 3, 2026
05D0906539Golden State Dermatology Associates355 Lennon LN Ste 255, Walnut Creek, CA 94598ComplianceJul 31, 2026
05D0946554Golden State Dermatology400 Taylor Blvd Suite 301, Pleasant Hill, CA 94523ComplianceJul 31, 2026
05D2187186Golden State Dermatology Associates Inc Brentwood1200 Central Blvd Ste D, Brentwood, CA 94513ComplianceAug 10, 2026
05D2268980Golden State Dermatology5201 Norris Canyon Rd Ste 320, San Ramon, CA 94583Certificate of waiverAug 3, 2027
05D2342602Golden State Dermatology Associates, Inc355 Lennon Lane Ste 295, Walnut Creek, CA 94598Provider-performed microscopyApr 21, 2028

National Provider Directory

National Provider Directory

Locations

2320 Woolsey St
Ste 202
Berkeley, CA 94705
Phone (510) 486-1700

100 Clock Tower Pl
Ste 250
Carmel, CA 93923
Phone (831) 308-4570

5400 Balboa Blvd
Ste 200
Encino, CA 91316
Phone (310) 274-5372

192 Blue Ravine Rd
#100
Folsom, CA 95630
Phone (916) 983-3373

5640 N Fresno St
Ste 110
Fresno, CA 93710
Phone (559) 266-9906

6769 N Fresno St
Ste 101
Fresno, CA 93710
Phone (559) 435-0337

1058 Murrieta Blvd
Livermore, CA 94550
Phone (925) 272-9022

1074 Murrieta Blvd
Livermore, CA 94550
Phone (925) 277-1300

129 Fremont Ave
Los Altos, CA 94022
Phone (650) 917-7711

410 E Yosemite Ave
Ste C
Merced, CA 95340
Phone (209) 205-2999

5575 W Las Positas Blvd
Ste 260
Pleasanton, CA 94588
Phone (925) 251-9012

5601 J St
Sacramento, CA 95819
Phone (916) 454-5922

5201 Norris Canyon Rd
Ste 320
San Ramon, CA 94583
Phone (925) 275-1712

135 Macaw Ln
#200
Simi Valley, CA 93065
Phone (805) 522-3300

135 Macaw Ln
Ste 200
Simi Valley, CA 93065
Phone (805) 522-3300

2802 Pacific Coast Hwy
#1182
Torrance, CA 90505
Phone (310) 274-5372

632 W 11th St
Ste 219
Tracy, CA 95376
Phone (209) 832-3332

2255 Ygnacio Valley Rd
Walnut Creek, CA 94598
Phone (925) 930-6680

355 Lennon Ln
Ste 295
Walnut Creek, CA 94598

Practitioners & affiliated clinicians

Practitioners 153

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 153

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1133481600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1791849600000",
    "number": "1700860871",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "370 N WIGET LN STE 250",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982454",
            "telephone_number": "925-945-7005",
            "fax_number": "925-954-1822"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "355 LENNON LN STE 255",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982496",
            "telephone_number": "925-932-7704",
            "fax_number": "925-932-7752"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1542 N Tracy Blvd # A",
            "address_purpose": "LOCATION",
            "city": "Tracy",
            "state": "CA",
            "postal_code": "953762903",
            "country_code": "US",
            "telephone_number": "209-836-2220",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2990 S Sepulveda Blvd Ste 300",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900643996",
            "country_code": "US",
            "telephone_number": "323-421-4747",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5575 W Las Positas Blvd Ste 260",
            "address_purpose": "LOCATION",
            "city": "Pleasanton",
            "state": "CA",
            "postal_code": "945885803",
            "country_code": "US",
            "telephone_number": "925-847-3020",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "355 Lennon Ln Ste 235",
            "address_purpose": "LOCATION",
            "city": "Walnut Creek",
            "state": "CA",
            "postal_code": "945982544",
            "country_code": "US",
            "telephone_number": "925-357-9050",
            "fax_number": "925-357-9040",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1200 Central Blvd Ste D",
            "address_purpose": "LOCATION",
            "city": "Brentwood",
            "state": "CA",
            "postal_code": "945132227",
            "country_code": "US",
            "telephone_number": "925-308-9510",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "17600 Monterey Rd Ste A",
            "address_purpose": "LOCATION",
            "city": "Morgan Hill",
            "state": "CA",
            "postal_code": "950373669",
            "country_code": "US",
            "telephone_number": "669-766-2021",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5640 N Fresno St Ste 110",
            "address_purpose": "LOCATION",
            "city": "Fresno",
            "state": "CA",
            "postal_code": "937106098",
            "country_code": "US",
            "telephone_number": "559-266-9906",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8735 Sierra College Blvd Ste 200",
            "address_purpose": "LOCATION",
            "city": "Roseville",
            "state": "CA",
            "postal_code": "956615992",
            "country_code": "US",
            "telephone_number": "916-721-2836",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "280 Baldwin Ave",
            "address_purpose": "LOCATION",
            "city": "San Mateo",
            "state": "CA",
            "postal_code": "944013915",
            "country_code": "US",
            "telephone_number": "650-727-6008",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "400 Taylor Blvd Ste 301",
            "address_purpose": "LOCATION",
            "city": "Pleasant Hill",
            "state": "CA",
            "postal_code": "945232160",
            "country_code": "US",
            "telephone_number": "925-687-8882",
            "fax_number": "925-318-9657",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1058 Murrieta Blvd",
            "address_purpose": "LOCATION",
            "city": "Livermore",
            "state": "CA",
            "postal_code": "945504111",
            "country_code": "US",
            "telephone_number": "925-277-1300 x92594",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "410 E Yosemite Ave Ste C",
            "address_purpose": "LOCATION",
            "city": "Merced",
            "state": "CA",
            "postal_code": "953408220",
            "country_code": "US",
            "telephone_number": "209-722-7801",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "230 N 1680 E Ste N1",
            "address_purpose": "LOCATION",
            "city": "St George",
            "state": "UT",
            "postal_code": "847902596",
            "country_code": "US",
            "telephone_number": "925-945-7005",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2255 Ygnacio Valley Rd Ste B1",
            "address_purpose": "LOCATION",
            "city": "Walnut Creek",
            "state": "CA",
            "postal_code": "945983335",
            "country_code": "US",
            "telephone_number": "925-945-7005 x92594",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5201 Norris Canyon Rd",
            "address_purpose": "LOCATION",
            "city": "San Ramon",
            "state": "CA",
            "postal_code": "945835411",
            "country_code": "US",
            "telephone_number": "925-277-1300",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8890 N Union Blvd Ste 207",
            "address_purpose": "LOCATION",
            "city": "Colorado Springs",
            "state": "CO",
            "postal_code": "809202701",
            "country_code": "US",
            "telephone_number": "925-945-7005",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1324 Nelson Ave",
            "address_purpose": "LOCATION",
            "city": "Modesto",
            "state": "CA",
            "postal_code": "953505374",
            "country_code": "US",
            "telephone_number": "209-524-9481",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "355 Lennon Ln Ste 295",
            "address_purpose": "LOCATION",
            "city": "Walnut Creek",
            "state": "CA",
            "postal_code": "945982563",
            "country_code": "US",
            "telephone_number": "925-945-7005",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6120 Mae Anne Ave Ste 1",
            "address_purpose": "LOCATION",
            "city": "Reno",
            "state": "NV",
            "postal_code": "895234706",
            "country_code": "US",
            "telephone_number": "775-746-0196",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1000 Delbon Ave Ste 8",
            "address_purpose": "LOCATION",
            "city": "Turlock",
            "state": "CA",
            "postal_code": "953822008",
            "country_code": "US",
            "telephone_number": "209-722-7801",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "GOLDEN STATE DERMATOLOGY ASSOCIATES INC",
        "organizational_subpart": "NO",
        "enumeration_date": "2005-12-02",
        "last_updated": "2026-10-13",
        "certification_date": "2026-10-13",
        "status": "A",
        "authorized_official_last_name": "ZIMMERMAN",
        "authorized_official_first_name": "JAY",
        "authorized_official_middle_name": "WILLIAM",
        "authorized_official_title_or_position": "PROVIDER",
        "authorized_official_telephone_number": "925-813-2971"
    },
    "taxonomies": [
        {
            "code": "207N00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dermatology",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207ND0101X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dermatology, MOHS-Micrographic Surgery",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207ND0900X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dermatology, Dermatopathology",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207NS0135X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dermatology, Procedural Dermatology",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • 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.

Verify at the official NPI Registry.