Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.
GOLDEN STATE DERMATOLOGY ASSOCIATES INC.
NPI 1700860871
Dermatology in Walnut Creek, CA
Active since December 02, 2005CLIA Certified · 6 labs
355 LENNON LN STE 255, WALNUT CREEK, CA 94598(925) 932-7704(925) 932-7752 Get Directions Write a Review
About Golden State Dermatology Associates Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GOLDEN STATE DERMATOLOGY ASSOCIATES INC. (NPI 1700860871) is a healthcare organization registered as a dermatology in Walnut Creek, California and active in the NPI registry since December 2005. The organization holds 6 active CLIA laboratory certificates, maintains 20 additional practice locations, and lists Jay William Zimmerman, Provider, as its authorized official.
NPPES Registry Identity
NPI1700860871
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameGOLDEN STATE DERMATOLOGY ASSOCIATES INC.
Location Address355 LENNON LN STE 255Walnut Creek, CA 94598-2496
Mailing Address370 N Wiget Ln Ste 250Walnut Creek, CA 94598-2488 · (925) 945-7005 · Fax (925) 954-1822
Phone(925) 932-7704
Fax(925) 932-7752
Organization SubpartNo
Authorized OfficialJay William ZimmermanProvider · (925) 813-2971
Enumeration DateDecember 2, 2005
Last NPPES UpdateOctober 1, 20265 updates tracked since enumeration
NPPES CertifiedOctober 1, 2026
✔ NPI 1700860871 is a valid, active identifier and passes the ISO check-digit test.
Specialties & Licenses 4
★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Also ListedDermatology · MOHS-Micrographic SurgeryTaxonomy 207ND0101X
Also ListedDermatology · DermatopathologyTaxonomy 207ND0900X
Also ListedDermatology · Procedural DermatologyTaxonomy 207NS0135X
355 LENNON LN STE 255, Walnut Creek, CA 94598
Secondary Practice Locations 20
Location 117600 Monterey Rd Ste AMorgan Hill, CA 95037-3669 · Phone (669) 766-2021
Location 2230 N 1680 E Ste N1St George, UT 84790-2596 · Phone (925) 945-7005
Location 32990 S Sepulveda Blvd Ste 300Los Angeles, CA 90064-3996 · Phone (323) 421-4747
Location 41542 N Tracy Blvd # ATracy, CA 95376-2903 · Phone (209) 836-2220
Location 55575 W Las Positas Blvd Ste 260Pleasanton, CA 94588-5803 · Phone (925) 847-3020
Location 6355 Lennon Ln Ste 235Walnut Creek, CA 94598-2544 · Phone (925) 357-9050 · Fax (925) 357-9040
Location 71200 Central Blvd Ste DBrentwood, CA 94513-2227 · Phone (925) 308-9510
Location 85640 N Fresno St Ste 110Fresno, CA 93710-6098 · Phone (559) 266-9906
Location 92255 Ygnacio Valley Rd Ste B1Walnut Creek, CA 94598-3335 · Phone (925) 945-7005 ext. 92594
Location 105201 Norris Canyon RdSan Ramon, CA 94583-5411 · Phone (925) 277-1300
Location 118890 N Union Blvd Ste 207Colorado Springs, CO 80920-2701 · Phone (925) 945-7005
Location 121324 Nelson AveModesto, CA 95350-5374 · Phone (209) 524-9481
Location 13355 Lennon Ln Ste 295Walnut Creek, CA 94598-2563 · Phone (925) 945-7005
Location 14400 Taylor Blvd Ste 301Pleasant Hill, CA 94523-2160 · Phone (925) 687-8882 · Fax (925) 318-9657
Location 151000 Delbon Ave Ste 8Turlock, CA 95382-2008 · Phone (209) 722-7801
Location 166120 Mae Anne Ave Ste 1Reno, NV 89523-4706 · Phone (775) 746-0196
Location 178735 Sierra College Blvd Ste 200Roseville, CA 95661-5992 · Phone (916) 721-2836
Location 18280 Baldwin AveSan Mateo, CA 94401-3915 · Phone (650) 727-6008
Location 19410 E Yosemite Ave Ste CMerced, CA 95340-8220 · Phone (209) 722-7801
Location 201058 Murrieta BlvdLivermore, CA 94550-4111 · Phone (925) 277-1300 ext. 92594
Other Identifiers 2
OtherA487440CA · License
Other05D096539CA · Clia Number
CLIA Laboratory Certificates CMS CLIA 10
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 05D2268980
Golden State Dermatology Associates, Inc · San Ramon, CACLIA Number05D2268980
Laboratory TypePhysician Office
Certificate Effective DateAugust 4, 2025
Certificate Expiration DateAugust 3, 2027
Laboratory DirectorJohn E. Call
Laboratory Phone(925) 277-1300
Laboratory LocationGolden State Dermatology Associates, Inc5201 Norris Canyon Rd Ste 320, San Ramon, CA 94583
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.
Certificate for Provider-Performed Microscopy Procedures (PPMP) 05D0691462
Golden State Dermatology Associates Inc · Walnut Creek, CACLIA Number05D0691462
Laboratory TypePhysician Office
Certificate Effective DateNovember 7, 2024
Certificate Expiration DateNovember 6, 2026
Laboratory DirectorJay Zimmerman
Laboratory Phone(925) 945-7005
Laboratory LocationGolden State Dermatology Associates Inc2255 Ygnacio Valley Rd Ste B1, Walnut Creek, CA 94598
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.
Certificate of Accreditation 05D0701455
Golden State Dermatology Associates Inc · Modesto, CACLIA Number05D0701455
Laboratory TypePhysician Office
Certificate Effective DateNovember 4, 2024
Certificate Expiration DateNovember 3, 2026
Laboratory DirectorDr. Christian C. Jones
Laboratory Phone(209) 524-9481
Laboratory LocationGolden State Dermatology Associates Inc1324 Nelson Ave Ste B, Modesto, CA 95350
CLIA data matches this NPI record on: Address Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.
Certificate of Compliance 05D2230384
Golden State Dermatology- Turlock · Turlock, CACLIA Number05D2230384
Laboratory TypePhysician Office
Certificate Effective DateFebruary 5, 2025
Certificate Expiration DateFebruary 4, 2027
Laboratory DirectorChristian C. Jones
Laboratory Phone(209) 226-4644
Laboratory LocationGolden State Dermatology- Turlock1000 Delbon Ave, Ste 8, Turlock, CA 95382
CLIA data matches this NPI record on: Address
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.
Certificate of Compliance 05D2173819
Golden State Dermatology Associates Inc · Livermore, CACLIA Number05D2173819
Laboratory TypePhysician Office
Certificate Effective DateMarch 24, 2025
Certificate Expiration DateMarch 23, 2027
Laboratory DirectorMinh Ngoc Dang
Laboratory Phone(925) 443-0980
Laboratory LocationGolden State Dermatology Associates Inc1074 Murietta Blvd, Livermore, CA 94550
CLIA data matches this NPI record on: Name
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.
Certificate of Compliance 05D2228655
Golden State Dermatology - 11th Street, Tracy · Tracy, CACLIA Number05D2228655
Laboratory TypePhysician Office
Certificate Effective DateFebruary 5, 2025
Certificate Expiration DateFebruary 4, 2027
Laboratory DirectorMinh Dang
Laboratory Phone(209) 836-2220
Laboratory LocationGolden State Dermatology - 11th Street, Tracy632 W 11th St, Ste 219, Tracy, CA 95376
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Physician Assistant (Medical)
355 LENNON LN STE 255
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Golden State Dermatology Associates Inc.'s NPI number?
The NPI number for Golden State Dermatology Associates Inc. is 1700860871. It was assigned to this organization in the NPPES registry on December 2, 2005.
Where is Golden State Dermatology Associates Inc. located?
Golden State Dermatology Associates Inc. is located at 355 Lennon Ln Ste 255, Walnut Creek, CA 94598. The listed phone number is (925) 932-7704.
What is Golden State Dermatology Associates Inc.'s specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Does Golden State Dermatology Associates Inc. hold CLIA laboratory certificates?
Yes. 6 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.
When was this NPI record last updated?
The NPPES record for Golden State Dermatology Associates Inc. was last updated on October 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Golden State Dermatology Associates Inc. · NPI 1700860871
Dermatology organization in Walnut Creek, California. Organization record, active in the CMS NPPES registry since December 2, 2005.
## Identity
- **NPI:** 1700860871 (Entity type: Organization)
- **Enumerated:** December 2, 2005
- **Primary specialty:** Dermatology · taxonomy 207N00000X
- **Organization subpart:** No
- **Authorized official:** Jay Zimmerman, PROVIDER
## Practice location
- **Address:** 355 LENNON LN STE 255, Walnut Creek, CA 94598-2496
- **Phone:** (925) 932-7704 · **Fax:** (925) 932-7752
## Record status
- **NPPES last updated:** October 1, 2026
- **Other identifiers:** Other A487440 (CA); Other 05D096539 (CA)
- **CLIA laboratory certificates:** 10 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1700860871) · Data from the CMS NPPES public registry.