Independent US Healthcare Provider Directory & Public Medical Database Patient Guides
Medical Specialty Listing

Internal Medicine Providers in San Ramon, CA

Browse 22 Internal Medicine providers listed in NPPES with a practice address in San Ramon, California.

22 Healthcare Providers

How San Ramon compares with the U.S.

San Ramon has 26 clinicians in Internal Medicine per 100,000 residents, about 58% of the U.S. rate of 44.

That is 22 active clinicians in Internal Medicine with a practice address in San Ramon, for a population of 85,993.

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.

88% of clinicians in Internal Medicine in San Ramon listed in the CMS Medicare file (15 of 17) accept Medicare assignment. That is lower than 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.

41% of clinicians in Internal Medicine in San Ramon listed in the CMS Medicare file (7 of 17) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to 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 Ramon, CA

Source: CMS PECOS
PECOS Enrolled Specialists 19 In San Ramon, CA
Part B Lab & Imaging Eligible 19 Diagnostic Referrals
DME Ordering Eligible 19 Durable Medical Equipment
Home Health Agency Referrals 19 HHA Ordering Eligible
Showing 1โ€“20 of 22 providers
With recent CMS data first, then Aโ€“Z

Dr. Kushal Chhabra , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
200 Porter Drive, Suite 300, San Ramon, CA 945831524
Phone: 9258386511
NPI Identifier 1255332953
View Full Profile

Dr. Edsil Asis De Ocampo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
6001 Norris Canyon Rd, San Ramon, CA 945835400
Phone: 9252759200
NPI Identifier 1265698567
View Full Profile

Dr. Victorina Hoffmann , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1081 Market Pl Ste 200, San Ramon, CA 945834749
Phone: 9258668800
NPI Identifier 1336251693
View Full Profile

Dr. Frank Chi Bing Hsueh , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
5601 Norris Canyon Rd, Ste 340, San Ramon, CA 945835407
Phone: 9257865322
NPI Identifier 1144224742
View Full Profile

Dr. Waheed Said Ibrahimi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1081 Market Pl Ste 500, San Ramon, CA 945834750
Phone: 9253657337
NPI Identifier 1174716583
View Full Profile

Dr. Tehmina Kanwal , MD

Internal Medicine

Active NPI Status Telehealth Services Available
9140 Alcosta Blvd, Ste D, San Ramon, CA 945833858
Phone: 9253615959
NPI Identifier 1144332487
View Full Profile

Dr. Sue Johnson Knight , MD

Internal Medicine

Active NPI Status
200 Porter Dr, Ste 300, San Ramon, CA 945831587
Phone: 9258386511
NPI Identifier 1619968443
View Full Profile

Tiffany Kuo

Internal Medicine

Active NPI Status Accepts Medicare Assignment
6001 Norris Canyon Rd, San Ramon, CA 945835400
Phone: 9252759200
NPI Identifier 1932632338
View Full Profile

Dr. Joseph Yusaf Mardanzai , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
11030 Bollinger Canyon Rd, Ste 240, San Ramon, CA 945824874
Phone: 9257361000
NPI Identifier 1043220031
View Full Profile

Dr. Sujatha Rajagopalan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2301 Camino Ramon, Suite 110, San Ramon, CA 945834440
Phone: 9253615531
NPI Identifier 1679558373
View Full Profile

Dr. Vipulkumar Bhupen Rana , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
975 Sereno Dr, Hbs Department, San Ramon, CA 94583
Phone: 7076512440
NPI Identifier 1831289115
View Full Profile

Dr. Bakul T Roy , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
5601 Norris Canyon Rd., Ste 340, San Ramon, CA 94583
Phone: 9258668080
NPI Identifier 1720056849
View Full Profile

Anahita Rashidion Shahabi

Internal Medicine

Active NPI Status Accepts Medicare Assignment
6001 Norris Canyon Rd, San Ramon, CA 945835400
Phone: 9252759200
NPI Identifier 1114428950
View Full Profile

Dr. Yshay Shlesinger , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
111 Deerwood Rd, Suite 180, San Ramon, CA 945832197
Phone: 9255525284
NPI Identifier 1881799922
View Full Profile

Dr. Michael T Temkin , DO

Internal Medicine

Active NPI Status
1081 Market Pl, #300, San Ramon, CA 945834773
Phone: 9258663900
NPI Identifier 1194787929
View Full Profile

Dr. Paul Kelsey Wheeler , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
200 Porter Dr, Ste 300, San Ramon, CA 945831587
Phone: 9258386511
NPI Identifier 1598755787
View Full Profile

Dr. Shirin Zavoshi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
6001 Norris Canyon Rd, San Ramon, CA 945835400
Phone: 9252759200
NPI Identifier 1205500741
View Full Profile

Dr. James Stephen Allen , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
6001 Bollinger Canyon Rd, Chevron Singapore-Orchard, San Ramon, CA 945837170
Phone: 9258423224
NPI Identifier 1902099518
View Full Profile

Dr. Laurie F Draughon , MD

Internal Medicine

Active NPI Status
231 Market Pl Ste 115, San Ramon, CA 945834743
Phone: 9253248227
NPI Identifier 1265490668
View Full Profile

Dr. Janice M Lee , MD

Internal Medicine

Active NPI Status
200 Porter Drive, Suite 300, San Ramon, CA 945831524
Phone: 9258386533
NPI Identifier 1407835432
View Full Profile

Frequently Asked Questions about Internal Medicine in San Ramon

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.