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Dermatology Specialists in Fremont, CA

Browse 15 Dermatology providers listed in NPPES with a practice address in Fremont, California.

15 Healthcare Providers

How Fremont compares with the U.S.

Fremont has 6.6 clinicians in Dermatology per 100,000 residents, about 1.4 times the U.S. rate of 4.7.

That is 15 active clinicians in Dermatology with a practice address in Fremont, for a population of 228,295.

The California rate is 5.3 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Dermatology in Fremont listed in the CMS Medicare file (11 of 11) accept Medicare assignment. That is similar to the California share of 97%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

27% of clinicians in Dermatology in Fremont listed in the CMS Medicare file (3 of 11) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 22%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Dermatology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Dermatology practitioners in Fremont, CA

Source: CMS PECOS
PECOS Enrolled Specialists 12 In Fremont, CA
Part B Lab & Imaging Eligible 12 Diagnostic Referrals
DME Ordering Eligible 12 Durable Medical Equipment
Home Health Agency Referrals 12 HHA Ordering Eligible
Showing 1โ€“15 of 15 providers
With recent CMS data first, then Aโ€“Z

Dr. Charles Chiang , MD

Dermatology

Active NPI Status Accepts Medicare Assignment
1860 Mowry Ave Ste 304, Fremont, CA 945381730
Phone: 5104562390
NPI Identifier 1780889519
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Dr. Sunil S Dhawan , MD

Dermatology

Active NPI Status Accepts Medicare Assignment
2557 Mowry Ave, Ste 34, Fremont, CA 94538
Phone: 5107974111
NPI Identifier 1326018987
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Dr. Stephanie Friduss , MD

Dermatology

Active NPI Status Accepts Medicare Assignment
39400 Paseo Padre Pkwy, Fremont, CA 945382310
Phone: 5107953000
NPI Identifier 1215012976
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Dr. David C Gorsulowsky , MD

Dermatology

Active NPI Status Accepts Medicare Assignment
39210 State St, Ste 218, Fremont, CA 945381456
Phone: 5107900477
NPI Identifier 1649272832
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Dr. Tatiana Grzeszkiewicz , MD, PhD

Dermatology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3200 Kearney St, Palo Alto Medical Foundation Dermatology, Fremont, CA 945382299
Phone: 5104901222
NPI Identifier 1841386489
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Dr. Ellen Haddock , MD

Dermatology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3200 Kearney St, Fremont, CA 945382299
Phone: 5104982374
NPI Identifier 1851823454
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Active NPI Status Accepts Medicare Assignment
3200 Kearney Street, Dermatology Department, Fremont, CA 945382299
Phone: 5104901222
NPI Identifier 1629032271
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Dr. Stephen B. Martinez , MD

Dermatology

Active NPI Status Accepts Medicare Assignment
39400 Paseo Padre Pkwy, Fremont, CA 945382310
Phone: 5107953000
NPI Identifier 1386729044
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Dr. Robert J Roth , MD

Dermatology

Active NPI Status
2557 Mowry Ave, Ste 34, Fremont, CA 94538
Phone: 5107974111
NPI Identifier 1205807864
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Dr. Michael Philip Ryan , MD

Dermatology

Active NPI Status Accepts Medicare Assignment
39400 Paseo Padre Pkwy, Fremont, CA 945382310
Phone: 5102483045
NPI Identifier 1699303008
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Dr. Rebecca L. Shpall , MD

Dermatology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3200 Kearney Street, Fremont, CA 945382299
Phone: 5104901222
NPI Identifier 1043386527
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Dr. Akhil Wadhera , MD

Dermatology

Active NPI Status Accepts Medicare Assignment
39400 Paseo Padre Pkwy, Fremont, CA 945382310
Phone: 5107953000
NPI Identifier 1508941279
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Dr. Jeffrey Alan Carmel , MD

Dermatology

Active NPI Status
2557 Mowry Ave, Ste 34, Fremont, CA 94538
Phone: 5107974111
NPI Identifier 1235109893
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Dr. Peter Lu , MD

Dermatology

Active NPI Status
48371 Fremont Blvd Ste 101, Fremont, CA 945386554
Phone: 6507933686
NPI Identifier 1275005209
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Dr. Tracie B. Tavel , MD

Dermatology

Active NPI Status
39400 Paseo Padre Pkwy, Fremont, CA 945382310
Phone: 5107953000
NPI Identifier 1851476527
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Frequently Asked Questions about Dermatology in Fremont

How do I check a Dermatology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.