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Internal Medicine Providers in San Carlos, CA

Browse 18 Internal Medicine providers listed in NPPES with a practice address in San Carlos, California.

18 Healthcare Providers

How San Carlos compares with the U.S.

San Carlos has 61 clinicians in Internal Medicine per 100,000 residents, about 1.4 times the U.S. rate of 44.

That is 18 active clinicians in Internal Medicine with a practice address in San Carlos, for a population of 29,614.

The California rate is 45 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.

93% of clinicians in Internal Medicine in San Carlos listed in the CMS Medicare file (14 of 15) accept Medicare assignment. That is similar to the California share of 96%.

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.

93% of clinicians in Internal Medicine in San Carlos listed in the CMS Medicare file (14 of 15) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 38%.

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).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in San Carlos, CA

Source: CMS PECOS
PECOS Enrolled Specialists 15 In San Carlos, CA
Part B Lab & Imaging Eligible 15 Diagnostic Referrals
DME Ordering Eligible 16 Durable Medical Equipment
Home Health Agency Referrals 15 HHA Ordering Eligible
Showing 1โ€“18 of 18 providers
With recent CMS data first, then Aโ€“Z

Dr. Rebecca Ashe , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 94070
Phone: 6505964000
NPI Identifier 1003980798
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Ritu Bansal

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
11 Cranfield Ave, San Carlos, CA 940701606
Phone: 2015743699
NPI Identifier 1003096777
View Full Profile

Tony Cun

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1871988949
View Full Profile

Dr. Charlotte Veronica Gonzales , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1186 Brittan Ave, San Carlos, CA 940703929
Phone: 6505912675
NPI Identifier 1891758892
View Full Profile

Dr. David Alexander Jacoby , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1036 Laurel St, San Carlos, CA 94070
Phone: 6506317000
NPI Identifier 1295715134
View Full Profile

Dr. Na Li , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1780918615
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Dr. Kenneth Seh Jay Lin , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1972546976
View Full Profile

Dr. Christie K Moua , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1245756451
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Dr. Shanti Marie Perkins , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1598844516
View Full Profile

Dr. Amy C. Portmore , MD

Internal Medicine

Active NPI Status
301 Industrial Rd, San Carlos, CA 94070
Phone: 6505964000
NPI Identifier 1386792455
View Full Profile

Dr. Ginger H. Roehrig , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6503214121
NPI Identifier 1720183833
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Dr. Robert Russo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1740293661
View Full Profile

Dr. Patricia Santana , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1679647275
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Dr. Alireza Shafaie , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1609956218
View Full Profile

Jefferson Wen

Internal Medicine

Active NPI Status Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1851825087
View Full Profile

Dr. Brett H. Wolff , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
301 Industrial Rd, San Carlos, CA 940702603
Phone: 6505964000
NPI Identifier 1093875197
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Dr. Suzanne G Dey , MD

Internal Medicine

Active NPI Status
1100 Laurel St, Suite D, San Carlos, CA 940705000
Phone: 6505953616
NPI Identifier 1548362270
View Full Profile

Dr. Martha Alba Mejia , MD

Internal Medicine

Active NPI Status
1660 San Carlos Ave, San Carlos, CA 940702022
Phone: 6505969085
NPI Identifier 1871520155
View Full Profile

Frequently Asked Questions about Internal Medicine in San Carlos

How do I check a Internal Medicine 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.

Other Specialties in San Carlos

Internal Medicine Providers in Other California Cities

Cities with the most listed practitioners first.