Doctors and health care providers in Great Lakes, IL
271 individual NPPES records list a practice address in Great Lakes, 147th of 541 Illinois cities. The largest group is general practice dentistry: 54, 20% of the city's records, against 2% across Illinois. Page 6 of 6.
The 8 largest groups in Great Lakes
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Great Lakes in Illinois
- Rank in Illinois147th of 541 cities by records
- Share of the state0.1% of Illinois's records
- Specialties present25 or more taxonomy codes
- Top three groups49.1% of all records
Compared with Illinois as a whole, Great Lakes has 703× the state's share of independent duty corpsman records.
Providers in Great Lakes, alphabetically
- Barbara Tomcko, D.D.S.General Practice Dentistry1790761914
- David TorrezOther Specialist/Technologist1588468383
- Hoang Harry Tran, O.D.Optometrist1285071324
- Matthew Turner, D.D.SMilitary Health Care Provider1154702140
- Bret Van Dyken, D.D.S.General Practice Dentistry1326025040
- John Vasquez, IDCIndependent Duty Corpsman1245434513
- Christopher Verzosa, D.D.S.General Practice Dentistry1164654364
- Bridget Walker, RDHDental Hygienist1720858558
- Shannan Walker, DDSDentist1043878358
- William Welder, M.D.Family Medicine Physician1679593214
- James Westra, M.D.Anatomic Pathology & Clinical Pathology Physician1609832187
- Lauren Wiles, DMDDentist1235029190
- Rhonda Wiley, IDCIndependent Duty Corpsman1447564232
- Larry Williams, DDSGeneral Practice Dentistry1972573624
- Roberta Wisun, DDSGeneral Practice Dentistry1689651333
- Shauna Wittke, RDHDental Hygienist1538939350
- Walter Wittke, DDSDentist1326026535
- Joseph Yancho, DDSDentist1942786710
- Joseph Youkhana, M.D.Family Medicine Physician1972681708
- Michael Zenz, M.A.Audiologist1154413193
- Magdalena ZygadloDental Hygienist1730959552
The largest Illinois cities
- Chicago63,379
- Springfield4,997
- Naperville4,634
- Peoria4,621
- Evanston4,013
How to read this directory
Great Lakes, Illinois appears in the CMS National Plan and Provider Enumeration System with 271 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Great Lakes - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Great Lakes practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.
The provider mix in Great Lakes is weighted toward General Practice Dentistry (54 clinicians, followed by Dentist with 52 and Independent Duty Corpsman with 27). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Illinois's population, Great Lakes reports roughly 2.2 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.
Of Illinois's most common specialties, Physical Therapist is the most prominent one with no provider currently listing a Great Lakes practice address, a coverage gap Great Lakes patients typically fill by traveling to a larger nearby hub.
For Great Lakes patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.
For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.
Common questions
How many doctors are in Great Lakes, IL?
There are 271 registered healthcare providers in Great Lakes, IL, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Great Lakes?
The most common specialties in Great Lakes are General Practice Dentistry, Dentist, Independent Duty Corpsman, Dental Hygienist, Clinical Psychologist. General Practice Dentistry has the most providers with 54.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.