NPPES file of Aug 9, 2026

Doctors and health care providers in Chatham, IL

111 individual NPPES records list a practice address in Chatham, 255th of 541 Illinois cities. The largest group is speech-language pathologist: 20, 18% of the city's records, against 4% across Illinois. Page 3 of 3.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Chatham in Illinois

  • Rank in Illinois255th of 541 cities by records
  • Share of the state<0.1% of Illinois's records
  • Specialties present25 or more taxonomy codes
  • Top three groups42.3% of all records

Compared with Illinois as a whole, Chatham has 4.2× the state's share of speech-language pathologist records.

Providers in Chatham, alphabetically

  1. Brooke WalkerBehavior Analyst1477829273
  2. Ronald Wenneborg, D.C.Chiropractor1568590685
  3. Margaret Wheelhouse, M.A., L.P.C., N.C.C.Professional Counselor1992055784
  4. Dana WhiteMedical Technologist1518232537
  5. Regina White, NPFamily Nurse Practitioner1659501955
  6. Emily Wiezorek, FNPFamily Nurse Practitioner1609310960
  7. Jonathan Wiezorek, ATCAthletic Trainer1326393190
  8. Sarah Wilks, NPFamily Nurse Practitioner1235563271
  9. Doris Williams, M.D.Adult Medicine Physician1891966792
  10. Vanessa Worsley, BCBABehavior Analyst1154623841
  11. Sahar Yazdani, M.D.Family Medicine Physician1174905574

The largest Illinois cities

  1. Chicago63,379
  2. Springfield4,997
  3. Naperville4,634
  4. Peoria4,621
  5. Evanston4,013

All of Illinois →

How to read this directory

Chatham, Illinois appears in the CMS National Plan and Provider Enumeration System with 111 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 Chatham - 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 Chatham 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 Chatham is weighted toward Speech-Language Pathologist (20 clinicians, followed by Pharmacist with 14 and Family Nurse Practitioner with 13). 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, Chatham reports roughly 0.9 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, Mental Health Counselor is the most prominent one with no provider currently listing a Chatham practice address, a coverage gap Chatham patients typically fill by traveling to a larger nearby hub.

For Chatham 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 Chatham, IL?

There are 111 registered healthcare providers in Chatham, IL, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Chatham?

The most common specialties in Chatham are Speech-Language Pathologist, Pharmacist, Family Nurse Practitioner, Family Medicine Physician, Professional Counselor. Speech-Language Pathologist has the most providers with 20.

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.