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Internal Medicine Providers in San Clemente, CA

Browse 16 Internal Medicine providers listed in NPPES with a practice address in San Clemente, California.

16 Healthcare Providers

How San Clemente compares with the U.S.

San Clemente has 25 clinicians in Internal Medicine per 100,000 residents, about 57% of the U.S. rate of 44.

That is 16 active clinicians in Internal Medicine with a practice address in San Clemente, for a population of 63,273.

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.

92% of clinicians in Internal Medicine in San Clemente listed in the CMS Medicare file (11 of 12) 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.

75% of clinicians in Internal Medicine in San Clemente listed in the CMS Medicare file (9 of 12) 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 Clemente, CA

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

Dr. Greg A Brown , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
655 Camino De Los Mares, Suite 124, San Clemente, CA 926732809
Phone: 9496619657
NPI Identifier 1720135346
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Dr. Lawrence Chung-Lun Chang , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
665 Camino De Los Mares, Suite 301, San Clemente, CA 926732859
Phone: 9492409664
NPI Identifier 1528046430
View Full Profile

Dr. Steven P Cullen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
665 Camino De Los Mares Ste 309, San Clemente, CA 92673
Phone: 9494879034
NPI Identifier 1487765731
View Full Profile

Dr. Karen Garner , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
831 Via Suerte Ste 102, San Clemente, CA 92673
Phone: 9493645600
NPI Identifier 1770639189
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Dr. Nick J Karahalios , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
665 Camino De Los Mares Ste 309, San Clemente, CA 926732841
Phone: 9494879034
NPI Identifier 1255442505
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Dr. Torsten J Kruse , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
831 Via Suerte, Suite 102, San Clemente, CA 926736531
Phone: 9493645600
NPI Identifier 1972644482
View Full Profile

Dr. Mahtab Naji , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
638 Camino De Los Mares Ste D4, San Clemente, CA 926732855
Phone: 9495428865
NPI Identifier 1558949693
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Dr. Simon G Outhwaite , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
647 Camino De Los Mares #108-167, San Clemente, CA 926732841
Phone: 9494936958
NPI Identifier 1851402002
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Dr. Faramarz Payandeh , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
665 Camino De Los Mares, #210, San Clemente, CA 926732859
Phone: 7146651600
NPI Identifier 1346250701
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Dr. Kenneth Lloyd Rexinger , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
831 Via Suerte, Suite 102, San Clemente, CA 926736531
Phone: 9493645600
NPI Identifier 1003809963
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Dr. Ronald Stanley Saltzman , MD

Internal Medicine

Active NPI Status
657 Camino De Los Mares, #135, San Clemente, CA 926732826
Phone: 9496617562
NPI Identifier 1427058395
View Full Profile

Dr. James Sperber , MD

Internal Medicine

Active NPI Status
638 Camino De Los Mares, Suite D4, San Clemente, CA 92673
Phone: 9495428865
NPI Identifier 1518922236
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Dr. Cary C Stewart , MD

Internal Medicine

Active NPI Status
1001 Avenida Pico, Suite C, San Clemente, CA 926736957
Phone: 9495426154
NPI Identifier 1184690901
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Dr. Yelena Wood , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
724 S El Camino Real, San Clemente, CA 926724250
Phone: 9494534343
NPI Identifier 1821091174
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Dr. Seema Khan , MD

Internal Medicine

Active NPI Status
1300 Avenida Vista Hermosa, Ste 250, San Clemente, CA 926736315
Phone: 9495427700
NPI Identifier 1376795617
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Dr. Theodore Richard Van Dam , MD

Internal Medicine

Active NPI Status
665 Camino De Los Mares, 210, San Clemente, CA 92673
Phone: 9492406772
NPI Identifier 1871527226
View Full Profile

Frequently Asked Questions about Internal Medicine in San Clemente

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 Clemente

Internal Medicine Providers in Other California Cities

Cities with the most listed practitioners first.