Internal Medicine Providers in Mercer Island, WA
Browse 13 Internal Medicine providers listed in NPPES with a practice address in Mercer Island, Washington.
How Mercer Island compares with the U.S.
Mercer Island has 51 clinicians in Internal Medicine per 100,000 residents, 16% higher than the U.S. rate of 44.
That is 13 active clinicians in Internal Medicine with a practice address in Mercer Island, for a population of 25,307.
The Washington 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.
Too few clinicians in Internal Medicine in Mercer Island 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 Registry addresses can be out of date.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).
Dr. Rutherford Platt Hayes , MD
Internal Medicine
Dr. Keith Alexander Luther , MD
Internal Medicine
Dr. James C Martin , MD
Internal Medicine
Dr. Alexandra Cecil Styhl , MD
Internal Medicine
Dr. Paul B Sytman , MD
Internal Medicine
Dr. Julie Myers Thomas , MD
Internal Medicine
Dr. Stephen Louis Walston , MD
Internal Medicine
Dr. Steven Bruce Dunning , MD
Internal Medicine
Dr. Martin Gelfand , MD
Internal Medicine
Dr. Daniel L. Kent , MD
Internal Medicine
Dr. Linda Rosenstock , MD
Internal Medicine
Dr. Leonard Rosoff , MD
Internal Medicine
Dr. Richard Hill Winterbauer , MD
Internal Medicine
Frequently Asked Questions about Internal Medicine in Mercer Island
Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Washington licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.
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.
Other Specialties in Mercer Island
Internal Medicine Providers in Other Washington Cities
Cities with the most listed practitioners first.