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Internal Medicine Providers in Alameda, CA

Browse 31 Internal Medicine providers listed in NPPES with a practice address in Alameda, California.

31 Healthcare Providers

How Alameda compares with the U.S.

Alameda has 40 clinicians in Internal Medicine per 100,000 residents, close to the U.S. rate of 44.

That is 31 active clinicians in Internal Medicine with a practice address in Alameda, for a population of 77,238.

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.

100% of clinicians in Internal Medicine in Alameda listed in the CMS Medicare file (22 of 22) 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.

5% of clinicians in Internal Medicine in Alameda listed in the CMS Medicare file (1 of 22) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower 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 Alameda, CA

Source: CMS PECOS
PECOS Enrolled Specialists 25 In Alameda, CA
Part B Lab & Imaging Eligible 25 Diagnostic Referrals
DME Ordering Eligible 25 Durable Medical Equipment
Home Health Agency Referrals 25 HHA Ordering Eligible
Showing 1โ€“20 of 31 providers
With recent CMS data first, then Aโ€“Z

Dr. David L. Belk , MD

Internal Medicine

Active NPI Status
2070 Clinton Ave, 5th Floor, Alameda, CA 945014320
Phone: 5107697078
NPI Identifier 1386654366
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Dr. Ernest Lincoln Bonner , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1406 Park St, Suite 400, Alameda, CA 945014560
Phone: 8108649600
NPI Identifier 1992785703
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Dr. Jenna Joelle Brimmer , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
501 S Shore Ctr W, Suite 103f, Alameda, CA 945015762
Phone: 5308144630
NPI Identifier 1295703775
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Dr. Garland A Castaneda , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2070 Clinton Ave, Alameda, CA 945014399
Phone: 5108144397
NPI Identifier 1740676881
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Dr. Angela Lai Chan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2417 Central Ave, Alameda, CA 945014515
Phone: 5107495731
NPI Identifier 1205909512
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Dr. Charlie C. Chu , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2417 Central Ave, Alameda, CA 945014515
Phone: 5107495731
NPI Identifier 1154409936
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Dr. David R. Craney , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2417 Central Ave, Alameda, CA 945014515
Phone: 5107495731
NPI Identifier 1144308941
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Dr. Sunil H. Desai , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
149 Creedon Cir, Alameda, CA 945021404
Phone: 8082436050
NPI Identifier 1174608848
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Dr. Chuong M. Do , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2417 Central Ave, Alameda, CA 945014515
Phone: 5107521000
NPI Identifier 1164507836
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Dr. Mary B. Herner , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2417 Central Ave, Alameda, CA 945014515
Phone: 5107521000
NPI Identifier 1477884187
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Dr. Jagmohan Singh Khaira , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1050 Marina Village Parkway, Suite 101, Alameda, CA 945011033
Phone: 5102275540
NPI Identifier 1801864988
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Dr. James Kong , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
501 S Shore Ctr W, Suite 103c, Alameda, CA 945015762
Phone: 5107691118
NPI Identifier 1366426470
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Dr. Luke Lin , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2070 Clinton Ave, Alameda, CA 94501
Phone: 5108144391
NPI Identifier 1740622679
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Dr. Elpidio Posa Magalong , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1050 Marina Village Pkwy Ste 101, Alameda, CA 945011033
Phone: 5102275540
NPI Identifier 1992773279
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Dr. Mark A. Marrama , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2417 Central Ave, Alameda, CA 945014515
Phone: 5107495731
NPI Identifier 1700950318
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Dr. Quynh N. Nguyen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2417 Central Ave, Alameda, CA 945014515
Phone: 5107495731
NPI Identifier 1447338231
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Kinjal Patel

Internal Medicine

Active NPI Status
2217 S Shore Ctr # 250, Alameda, CA 945018073
Phone: 5103234410
NPI Identifier 1114243854
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Catherine K Pyun

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2070 Clinton Ave, Alameda, CA 945014399
Phone: 5105144397
NPI Identifier 1154390144
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Dr. Samra Rashid , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2070 Clinton Ave, Alameda, CA 945014399
Phone: 5108149397
NPI Identifier 1891112082
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Dr. Loton Shippey , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2070 Clinton Ave, Alameda, CA 945014399
Phone: 5108144397
NPI Identifier 1730529496
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Frequently Asked Questions about Internal Medicine in Alameda

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.