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Internal Medicine - Pulmonary Diseases in Orange, CA

Browse 21 Internal Medicine - Pulmonary Disease providers listed in NPPES with a practice address in Orange, California.

21 Healthcare Providers

How Orange compares with the U.S.

Orange has 15 clinicians in Internal Medicine - Pulmonary Disease per 100,000 residents, 3.3 times the U.S. rate of 4.7.

That is 21 active clinicians in Internal Medicine - Pulmonary Disease with a practice address in Orange, for a population of 138,266.

The California rate is 3.7 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. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine - Pulmonary Disease in Orange listed in the CMS Medicare file (14 of 14) accept Medicare assignment. That is similar to the California share of 97%.

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.

71% of clinicians in Internal Medicine - Pulmonary Disease in Orange listed in the CMS Medicare file (10 of 14) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 54%.

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 November 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 - Pulmonary Disease Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Pulmonary Disease practitioners in Orange, CA

Source: CMS PECOS
PECOS Enrolled Specialists 15 In Orange, CA
Part B Lab & Imaging Eligible 15 Diagnostic Referrals
DME Ordering Eligible 16 Durable Medical Equipment
Home Health Agency Referrals 15 HHA Ordering Eligible
Showing 1โ€“20 of 21 providers
With recent CMS data first, then Aโ€“Z

Dr. Fatima Ajaz , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
845 W La Veta Ave Ste 108, Orange, CA 928683930
Phone: 7146392600
NPI Identifier 1477731461
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Dr. Sebastian Benavides Arcila , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment
101 The City Dr S, Orange, CA 928683201
Phone: 7144566693
NPI Identifier 1588956007
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Dr. Matthew Brenner , MD

Internal Medicine - Pulmonary Disease

Active NPI Status
Uci Medical Center, 101 The City Drive South, Orange, CA 92868
Phone: 7144568978
NPI Identifier 1457431538
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Dr. Elsa Cassandra Camarillo , DO

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
333 City Blvd W Ste 400, Orange, CA 928682994
Phone: 7144566870
NPI Identifier 1194187781
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Dr. Raymond J Casciari , MD

Internal Medicine - Pulmonary Disease

Active NPI Status
1310 W Stewart Dr, Suite 410, Orange, CA 928683854
Phone: 7146399401
NPI Identifier 1467420273
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Hassan Hashm

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 8004653203
NPI Identifier 1528589405
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Dr. Christopher K Hwe , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1010 W La Veta Ave Ste 750, Orange, CA 928684312
Phone: 7143616600
NPI Identifier 1790149136
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Asad Javed , MEDICAL DOCTOR

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment
2141 W Orangewood Ave Ste B, Orange, CA 928681955
Phone: 7142023811
NPI Identifier 1598076093
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Dr. Panch Jeyakumar , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7148807812
NPI Identifier 1629047964
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Dr. James H. Law , MD

Internal Medicine - Pulmonary Disease

Active NPI Status
1010 W La Veta Ave, Ste 750, Orange, CA 928684300
Phone: 7143616600
NPI Identifier 1861460370
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Dr. James Lineback , MD

Internal Medicine - Pulmonary Disease

Active NPI Status
721 N Eckhoff St, Orange, CA 928681005
Phone: 7145477551
NPI Identifier 1922210087
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Dr. Lusine Melik-Adamyan , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment
101 The City Dr S, Orange, CA 928683201
Phone: 7144568888
NPI Identifier 1962679266
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Dr. Mahmoud Qasem Moammar , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
845 W La Veta Ave Ste 108, Orange, CA 928683930
Phone: 7142896552
NPI Identifier 1952500696
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Dr. Robert Parke , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
845 W La Veta Ave Ste 108, Orange, CA 92868
Phone: 7146392600
NPI Identifier 1962470161
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Dr. James L Pearle , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S Bldg 30, Orange, CA 928683201
Phone: 7144567720
NPI Identifier 1982783940
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Dr. Jack O. Stewart , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment
1310 W Stewart Dr Ste 408, Orange, CA 928683855
Phone: 7146399401
NPI Identifier 1942278452
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Dr. Jay Thomas Thetford , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7144563874
NPI Identifier 1689161192
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Dr. Thomas Wayne Waddington , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7144568888
NPI Identifier 1891744470
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Dr. Henri G Colt , MD

Internal Medicine - Pulmonary Disease

Active NPI Status
Uci Medical Center, 101 The City Drive South, Orange, CA 92868
Phone: 7144568978
NPI Identifier 1295815389
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Dr. Bahman Saatian , MD

Internal Medicine - Pulmonary Disease

Active NPI Status
101 The City Dr S, Orange, CA 928683201
Phone: 7144568026
NPI Identifier 1508050865
View Full Profile

Frequently Asked Questions about Internal Medicine - Pulmonary Disease in Orange

How do I check a Internal Medicine - Pulmonary Disease 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.