Medical Specialty Listing

Internal Medicine Providers in Green Valley, AZ

Browse 16 Internal Medicine providers listed in NPPES with a practice address in Green Valley, Arizona.

16 Healthcare Providers

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How Green Valley compares with the U.S.

Green Valley has 72 clinicians in Internal Medicine per 100,000 residents, about 1.6 times the U.S. rate of 44.

That is 16 active clinicians in Internal Medicine with a practice address in Green Valley, for a population of 22,114.

The Arizona rate is 39 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.

Too few clinicians in Internal Medicine in Green Valley are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.

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 Registry addresses can be out of date.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. 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 Green Valley, AZ

Source: CMS PECOS

PECOS Enrolled Specialists 12 In Green Valley, AZ

Part B Lab & Imaging Eligible 12 Diagnostic Referrals

DME Ordering Eligible 12 Durable Medical Equipment

Home Health Agency Referrals 12 HHA Ordering Eligible

Showing 1–16 of 16 providers

With recent CMS data first, then A–Z

Dr. Ruben Calvillo , MD

Internal Medicine

Active NPI Status

1141 S La Canada Dr, Green Valley, AZ 856141945

Phone: 5206943030

NPI Identifier 1316985435

Internal Medicine Providers in Green Valley, AZ

How Green Valley compares with the U.S.

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Dr. Ruben Calvillo , MD

Dr. Rashmi Chhabra , MD

Dr. Edita Extra-Mendoza , MD

Dr. Stephanie Fakhry Tonos , MD

Craig Gayle

Dr. Ernesto Gutierrez , MD

Dr. Juan J Guzman , MD

Dr. Tia Heng , MD

Dr. Fred P Mendoza , MD

Dr. Chad Allen Prior , MD

Dr. Howard J Rolins , MD

Dr. Charles I Barta , MD

Dr. Dean D Ettinger , MD

Dr. Francisco Rafael Rivera Pabon , MD

Dr. William Stewart , MD

Dr. Jeffrey I Weisel , MD

Frequently Asked Questions about Internal Medicine in Green Valley

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