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Internal Medicine Providers in West Covina, CA

Browse 23 Internal Medicine providers listed in NPPES with a practice address in West Covina, California.

23 Healthcare Providers

How West Covina compares with the U.S.

West Covina has 21 clinicians in Internal Medicine per 100,000 residents, about 48% of the U.S. rate of 44.

That is 23 active clinicians in Internal Medicine with a practice address in West Covina, for a population of 107,037.

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.

93% of clinicians in Internal Medicine in West Covina 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.

40% of clinicians in Internal Medicine in West Covina listed in the CMS Medicare file (6 of 15) 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 West Covina, CA

Source: CMS PECOS
PECOS Enrolled Specialists 16 In West Covina, CA
Part B Lab & Imaging Eligible 16 Diagnostic Referrals
DME Ordering Eligible 17 Durable Medical Equipment
Home Health Agency Referrals 16 HHA Ordering Eligible
Showing 1โ€“20 of 23 providers
With recent CMS data first, then Aโ€“Z

Dr. Henry Chang , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2707 E Valley Blvd, Suite 208, West Covina, CA 917923195
Phone: 6265810486
NPI Identifier 1740430289
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Dr. Amitabh Shanish Chauhan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1135 S Sunset Ave, #100, West Covina, CA 917903937
Phone: 6269608614
NPI Identifier 1619925948
View Full Profile

Dr. Fu-Cheng Chuang , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1115 S Sunset Ave Ste 200, West Covina, CA 917903940
Phone: 6267328390
NPI Identifier 1063779544
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Dr. Seung Sue Cua , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1433 W Merced Ave, Ste 114-8, West Covina, CA 91790
Phone: 6269604939
NPI Identifier 1063513661
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Dr. Lina C. Dela Cruz , MD

Internal Medicine

Active NPI Status
140 N Orange Ave Ste 100, West Covina, CA 917902032
Phone: 6268001200
NPI Identifier 1952489858
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Dr. Meisam Fekri , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
222 N Sunset Ave Ste F, West Covina, CA 917902278
Phone: 6264306826
NPI Identifier 1831687581
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Dr. Anil Gupta , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1535 W Merced Ave Ste 301, West Covina, CA 917903404
Phone: 6269220533
NPI Identifier 1538182407
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Dr. Cesar A Jimenez , MD

Internal Medicine

Active NPI Status
140 N Orange Ave Ste 100, West Covina, CA 917902032
Phone: 6268001200
NPI Identifier 1114099942
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Dr. Ruth Manjula Karunananthan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1500 W West Covina Pkwy, Ste 102, West Covina, CA 917902703
Phone: 6262637010
NPI Identifier 1922057256
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Dr. Jae M Kim , MD

Internal Medicine

Active NPI Status
1433 W Merced Ave., Suite 217, West Covina, CA 917905058
Phone: 6269171924
NPI Identifier 1689735953
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Dr. Jiandong Liu , MD

Internal Medicine

Active NPI Status
2902 E Virginia Ave, #12, West Covina, CA 917912159
Phone: 6266760172
NPI Identifier 1649238130
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Dr. Kyaw Lyn , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
906 S Sunset Ave, Suite 101, West Covina, CA 917903400
Phone: 6269601902
NPI Identifier 1902841166
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Dr. Lakshman D Makandura , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
910 S Sunset Ave, Suite # 8, West Covina, CA 917903409
Phone: 6263388407
NPI Identifier 1578614657
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Dr. Hee Yong Oh , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1433 W Merced Ave Ste 207, West Covina, CA 917903402
Phone: 6269622421
NPI Identifier 1225106693
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Dr. Virgilio J. Soriano , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1559 E Amar Rd, Suite F, West Covina, CA 917921679
Phone: 6268101522
NPI Identifier 1801843073
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Dr. John Z Wang , MD, PhD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1115 S Sunset Ave Ste 200, West Covina, CA 917903940
Phone: 6267328390
NPI Identifier 1285747931
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Dr. Tei Chen Wang , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1500 W West Covina Pkwy, Ste 100, West Covina, CA 917902708
Phone: 6268562226
NPI Identifier 1679523906
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Dr. Jair Wong , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
906 S Sunset Ave Ste 102, West Covina, CA 917903400
Phone: 6269629108
NPI Identifier 1972541266
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Dr. Johny A Cu , MD

Internal Medicine

Active NPI Status
1535 W Merced Ave, Suite 301, West Covina, CA 917903404
Phone: 6263316411
NPI Identifier 1336223569
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Dr. Ziad Saadi Dabuni , MD

Internal Medicine

Active NPI Status
1135 S Sunset Ave, West Covina, CA 917903937
Phone: 6269608614
NPI Identifier 1851349187
View Full Profile

Frequently Asked Questions about Internal Medicine in West Covina

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.