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Internal Medicine Providers in Oxnard, CA

Browse 44 Internal Medicine providers listed in NPPES with a practice address in Oxnard, California.

44 Healthcare Providers

How Oxnard compares with the U.S.

Oxnard has 22 clinicians in Internal Medicine per 100,000 residents, about 49% of the U.S. rate of 44.

That is 44 active clinicians in Internal Medicine with a practice address in Oxnard, for a population of 200,928.

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.

97% of clinicians in Internal Medicine in Oxnard listed in the CMS Medicare file (29 of 30) 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.

37% of clinicians in Internal Medicine in Oxnard listed in the CMS Medicare file (11 of 30) 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 Oxnard, CA

Source: CMS PECOS
PECOS Enrolled Specialists 37 In Oxnard, CA
Part B Lab & Imaging Eligible 36 Diagnostic Referrals
DME Ordering Eligible 36 Durable Medical Equipment
Home Health Agency Referrals 36 HHA Ordering Eligible
Showing 1โ€“20 of 44 providers
With recent CMS data first, then Aโ€“Z

Dr. Victor H Alcocer , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1901 Outlet Center Dr Ste 200, Oxnard, CA 930360666
Phone: 8059818300
NPI Identifier 1023171162
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Dr. Ananda P Ananda , MD

Internal Medicine

Active NPI Status
2800 S Ventura Rd, Oxnard, CA 930334905
Phone: 8059840144
NPI Identifier 1912044181
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Dr. Sulaiman Jamil Barkho , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1600 N Rose Ave, Oxnard, CA 930303722
Phone: 8059882500
NPI Identifier 1710417209
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Manuel F Beltran

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2600 E Vineyard Ave, Oxnard, CA 930361615
Phone: 8054363444
NPI Identifier 1538705462
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Dr. Christopher James Brana , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1901 Outlet Center Dr Ste 210, Oxnard, CA 930360666
Phone: 8059830425
NPI Identifier 1386096345
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Dr. Richard Daniel Brand , MD

Internal Medicine

Active NPI Status
2241 Wankel Way, Suite B, Oxnard, CA 930300190
Phone: 8059830425
NPI Identifier 1770527608
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Dr. Oscar Carazas , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1600 N Rose Ave, Oxnard, CA 930303722
Phone: 8059882505
NPI Identifier 1255745956
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Dr. Paul Marian Cisarik , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2361 E Vineyard Ave, Oxnard, CA 930362102
Phone: 8059813770
NPI Identifier 1952515421
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Dr. Dorothea Clayton , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3641 W 5th St, Oxnard, CA 93030
Phone: 8059855505
NPI Identifier 1053596395
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Dr. Natalie Daoud , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1600 N Rose Ave, Oxnard, CA 930303722
Phone: 8059882500
NPI Identifier 1437579257
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Dr. Romany F. Demian , MD

Internal Medicine

Active NPI Status Telehealth Services Available
971 W 7th St # B, Suite # B, Oxnard, CA 930306757
Phone: 8054832500
NPI Identifier 1043232085
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Dr. Liz Diaz-Querol , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2200 E Gonzales Rd, Oxnard Ii Medical Office Building, Oxnard, CA 930360619
Phone: 8885153500
NPI Identifier 1184962565
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Dr. Rukmini Enjamuri , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2241 Wankel Way Ste A, Oxnard, CA 930300191
Phone: 8059830521
NPI Identifier 1952823528
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Dr. Robert Fell , MD

Internal Medicine

Active NPI Status
1600 N Rose Ave, Oxnard, CA 930303722
Phone: 8059882500
NPI Identifier 1619322815
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Yennifer Y Gil Castano

Internal Medicine

Active NPI Status Accepts Medicare Assignment
4400 Olds Rd, Oxnard, CA 930338061
Phone: 8059865551
NPI Identifier 1205472990
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Dr. Leah E. Grossman , MD

Internal Medicine

Active NPI Status
1600 N Rose Ave, Oxnard, CA 930303722
Phone: 8059882505
NPI Identifier 1710542824
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Dr. Ming K Heng , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2361 E Vineyard Ave, Oxnard, CA 930362102
Phone: 8059813770
NPI Identifier 1780638460
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Grace Hunter

Internal Medicine

Active NPI Status
325 W Channel Islands Blvd, Oxnard, CA 930334501
Phone: 8022049520
NPI Identifier 1831622760
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Dr. Jeffrey Scott Kopstein , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1600 N Rose Ave, Oxnard, CA 930303722
Phone: 8059882500
NPI Identifier 1487041158
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Dr. Morgan Elizabeth Lyons , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2220 E Gonzales Rd, Oxnard, CA 930363707
Phone: 8059815151
NPI Identifier 1578790135
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Frequently Asked Questions about Internal Medicine in Oxnard

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.