Medical Specialty Listing

Internal Medicine Providers in Sonora, CA

Browse 17 Internal Medicine providers listed in NPPES with a practice address in Sonora, California.

17 Healthcare Providers

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How Sonora compares with the U.S.

17 active clinicians in Internal Medicine list a practice address in Sonora, CA in the NPI registry.

Sonora has fewer than 10,000 residents, so rates per 100,000 people change a lot with each clinician and are not compared here.

100% of clinicians in Internal Medicine in Sonora listed in the CMS Medicare file (11 of 11) 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.

27% of clinicians in Internal Medicine in Sonora listed in the CMS Medicare file (3 of 11) 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 Registry addresses can be out of date.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 · 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.

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Sonora, CA

Source: CMS PECOS

PECOS Enrolled Specialists 13 In Sonora, CA

Part B Lab & Imaging Eligible 14 Diagnostic Referrals

DME Ordering Eligible 14 Durable Medical Equipment

Home Health Agency Referrals 14 HHA Ordering Eligible

Showing 1–17 of 17 providers

With recent CMS data first, then A–Z

Dr. David Eugene Allen , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment

690 Guzzi Lane, Suite D, Sonora, CA 953705292

Phone: 2095330333

NPI Identifier 1184687535

Internal Medicine Providers in Sonora, CA

How Sonora compares with the U.S.

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Dr. David Eugene Allen , MD

Dr. Arturo Alvarez Antezana , MD

Dr. Leslie M Brocchini , MD

Dr. Kevin Gandhi , DO

Dr. Jason Robert Jeffery , MD

Dr. Daniel C Meador , MD

Dr. James D. Mosson , MD

Dr. Zachary Lee Nichols , DO

Dr. Daniel B Phillips , MD

Dr. Maureen M Regan , MD

Dr. Reiker Joseph Schultz , MD

Dr. John Frederick Shield , MD

Dr. Jiandong Wei , MD

Dr. Kyi Kyi Thwin Win , MD

Dr. Johnson Kar Tsun Wong , MD

Dr. Brenda Joan Forrest , MD

Dr. David Yao Tek Su , MD

Frequently Asked Questions about Internal Medicine in Sonora

Other Specialties in Sonora

Internal Medicine Providers in Other California Cities