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Internal Medicine Providers in Santa Rosa, CA

Browse 98 Internal Medicine providers listed in NPPES with a practice address in Santa Rosa, California.

98 Healthcare Providers

How Santa Rosa compares with the U.S.

Santa Rosa has 55 clinicians in Internal Medicine per 100,000 residents, 24% higher than the U.S. rate of 44.

That is 98 active clinicians in Internal Medicine with a practice address in Santa Rosa, for a population of 177,090.

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.

98% of clinicians in Internal Medicine in Santa Rosa listed in the CMS Medicare file (59 of 60) 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.

28% of clinicians in Internal Medicine in Santa Rosa listed in the CMS Medicare file (17 of 60) 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 Santa Rosa, CA

Source: CMS PECOS
PECOS Enrolled Specialists 71 In Santa Rosa, CA
Part B Lab & Imaging Eligible 73 Diagnostic Referrals
DME Ordering Eligible 76 Durable Medical Equipment
Home Health Agency Referrals 73 HHA Ordering Eligible
Showing 1โ€“20 of 98 providers
With recent CMS data first, then Aโ€“Z

Dr. Navneet Attri , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
3883 Airway Dr, Suite 201, Santa Rosa, CA 954031670
Phone: 7075218841
NPI Identifier 1407021918
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Dr. Kelly A. Bastoni , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
401 Bicentennial Way, Santa Rosa, CA 954032149
Phone: 7075714000
NPI Identifier 1891869400
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Dr. Sanyogeeta Mukund Bhaway , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1165 Montgomery Dr, Santa Rosa, CA 954054801
Phone: 7073038307
NPI Identifier 1275828162
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Dr. David L Capaccio , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1165 Montgomery Dr, Santa Rosa, CA 954054801
Phone: 7075475437
NPI Identifier 1457355364
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Dr. Harry B Carr , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
34 Mark West Springs Rd Fl 2, Santa Rosa, CA 954031766
Phone: 7076948277
NPI Identifier 1770694044
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Dr. William David Carroll , MD

Internal Medicine

Active NPI Status
3536 Mendocino Ave, 300, Santa Rosa, CA 954033634
Phone: 7075462180
NPI Identifier 1922005891
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Dr. David Tai-Way Chan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
401 Bicentennial Way, Santa Rosa, CA 954032149
Phone: 7073934000
NPI Identifier 1972132546
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Dr. Johnson Jack Clark , MD

Internal Medicine

Active NPI Status
401 Bicentennial Way, Santa Rosa, CA 954032149
Phone: 7075714000
NPI Identifier 1104976810
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Dr. Lawrence Richard Cooper , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3536 Mendocino Ave, 300, Santa Rosa, CA 954033634
Phone: 7075462180
NPI Identifier 1801895602
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Dr. Seena Davies , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
401 Bicentennial Way, Ste 285 A, Santa Rosa, CA 954032149
Phone: 7073934104
NPI Identifier 1568683704
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Dr. Catherine Virginia Davis , MD

Internal Medicine

Active NPI Status
500 Doyle Park Dr, Ste G03, Santa Rosa, CA 954054559
Phone: 7075443411
NPI Identifier 1497748776
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Dr. Marlon Decastro , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
500 Doyle Park Dr, Ste. 303, Santa Rosa, CA 954054558
Phone: 7073038300
NPI Identifier 1780643270
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Dr. Shelleen E. Denno , MD

Internal Medicine

Active NPI Status
2285 Olivet Lane, Santa Rosa, CA 95401
Phone: 7075260465
NPI Identifier 1871567164
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Asia Day Downing

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1165 Montgomery Dr, Santa Rosa, CA 954054801
Phone: 7075475437
NPI Identifier 1316365265
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Dr. Suhana Elamsenthil , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
30 Mark West Springs Rd, Santa Rosa, CA 954031436
Phone: 7075764000
NPI Identifier 1003493735
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Dr. Zhen Zhou Feng , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
401 Bicentennial Way, 240 Mob-W, Santa Rosa, CA 954032149
Phone: 7075713621
NPI Identifier 1871600031
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Dr. Monica O Ferguson , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
500 Doyle Park Dr, Suite 303, Santa Rosa, CA 954054558
Phone: 7073038300
NPI Identifier 1528176989
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Dr. Timothy Louis Gieseke , MD

Internal Medicine

Active NPI Status
3536 Mendocino Ave, 300, Santa Rosa, CA 954033634
Phone: 7075462180
NPI Identifier 1992703706
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Dr. Kyle Glover , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
30 Mark West Springs Rd, Santa Rosa, CA 954031436
Phone: 7075764000
NPI Identifier 1801381504
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Dr. Derek Patrick Gong , MD

Internal Medicine

Active NPI Status
16319 Third Street, Santa Rosa, CA 95409
Phone: 7078692849
NPI Identifier 1184671513
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Frequently Asked Questions about Internal Medicine in Santa Rosa

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.