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Internal Medicine Providers in Costa Mesa, CA

Browse 26 Internal Medicine providers listed in NPPES with a practice address in Costa Mesa, California.

26 Healthcare Providers

How Costa Mesa compares with the U.S.

Costa Mesa has 24 clinicians in Internal Medicine per 100,000 residents, about 53% of the U.S. rate of 44.

That is 26 active clinicians in Internal Medicine with a practice address in Costa Mesa, for a population of 110,330.

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.

95% of clinicians in Internal Medicine in Costa Mesa listed in the CMS Medicare file (18 of 19) 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.

42% of clinicians in Internal Medicine in Costa Mesa listed in the CMS Medicare file (8 of 19) 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 Costa Mesa, CA

Source: CMS PECOS
PECOS Enrolled Specialists 21 In Costa Mesa, CA
Part B Lab & Imaging Eligible 21 Diagnostic Referrals
DME Ordering Eligible 22 Durable Medical Equipment
Home Health Agency Referrals 21 HHA Ordering Eligible
Showing 1โ€“20 of 26 providers
With recent CMS data first, then Aโ€“Z

Dr. Shirin Afrasiabi , MD INC

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2301 Newport Blvd, Costa Mesa, CA 926271516
Phone: 9495485700
NPI Identifier 1548219140
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Dr. Adnan Akhtar , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
301 Victoria St, Costa Mesa, CA 926271995
Phone: 9496422734
NPI Identifier 1215126396
View Full Profile

Dr. Philip Cheu , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3030 Harbor Blvd, Costa Mesa, CA 926262562
Phone: 7149292300
NPI Identifier 1568467215
View Full Profile

Dr. Jeffrey G. Dyo , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1640 Newport Blvd Ste 300, Costa Mesa, CA 926277725
Phone: 9493865101
NPI Identifier 1538663158
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Dr. Ragavi Elangovan , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
3390 Harbor Blvd Ste 100, Costa Mesa, CA 926261554
Phone: 5622376417
NPI Identifier 1336587658
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Dr. Shelley H Han , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
3090 Bristol St Ste 200, Costa Mesa, CA 926263061
Phone: 8887899585
NPI Identifier 1114345683
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Dr. David Chun Kang Huang , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
275 Victoria St, Suite# 2b, Costa Mesa, CA 926271906
Phone: 9497226178
NPI Identifier 1306919691
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Dr. Abdul A Khan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
275 Victoria St, Suite 1e, Costa Mesa, CA 926271906
Phone: 9495743615
NPI Identifier 1932120797
View Full Profile

Dr. Munazza Khan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
275 Victoria St, Suite 1e, Costa Mesa, CA 926271906
Phone: 9495743615
NPI Identifier 1609897479
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Dr. Yvonne Yee-Wan Kwan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1665 Scenic Ave, 100, Costa Mesa, CA 926261445
Phone: 7144364700
NPI Identifier 1659378966
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Dr. Dariush S Lavi , MD

Internal Medicine

Active NPI Status Telehealth Services Available
1503 S Coast Dr Ste 109, Costa Mesa, CA 926261526
Phone: 7145851842
NPI Identifier 1750449062
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Dr. Shawna Le , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1640 Newport Blvd, Costa Mesa, CA 926277745
Phone: 9493981440
NPI Identifier 1265061451
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Dr. Edward Lee , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1665 Scenic Ave, 100, Costa Mesa, CA 926261445
Phone: 7144364700
NPI Identifier 1508863499
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Dr. Kelly Kathlyn Mccann , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1831 Orange Ave Ste C, Costa Mesa, CA 926272839
Phone: 9495745800
NPI Identifier 1336155381
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Dr. Dilip R Patel , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2501 Harbor Blvd, Costa Mesa, CA 926266143
Phone: 7149575000
NPI Identifier 1053363820
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Dr. Elizabeth Thu Pham , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1665 Scenic Ave, Costa Mesa, CA 926261445
Phone: 7144364775
NPI Identifier 1740413681
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Dr. Sailaja M Reddy , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2501 Harbor Blvd, Costa Mesa, CA 926266143
Phone: 7149575000
NPI Identifier 1659309466
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Dr. Roxanne Stallworth , MD, MPH

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1640 Newport Blvd Ste 440, Costa Mesa, CA 926273786
Phone: 9497918888
NPI Identifier 1366678906
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Dr. Maryam Attar-Seyedi , MD

Internal Medicine

Active NPI Status
1190 W Baker Street, Ste 100, Costa Mesa, CA 926264105
Phone: 7146682500
NPI Identifier 1518972330
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Dr. Matthew C Boone , MD

Internal Medicine

Active NPI Status
1640 Newport Blvd Ste 300, Costa Mesa, CA 926277725
Phone: 9493865101
NPI Identifier 1487685095
View Full Profile

Frequently Asked Questions about Internal Medicine in Costa Mesa

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.