NPPES file of Aug 9, 2026

Doctors and health care providers in Crystal Lake, IL

1,442 individual NPPES records list a practice address in Crystal Lake, 28th of 541 Illinois cities. The largest group is behavior technician: 120, 8% of the city's records, against 4% across Illinois. Page 28 of 29.

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

The 8 largest groups in Crystal Lake

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Crystal Lake in Illinois

  • Rank in Illinois28th of 541 cities by records
  • Share of the state0.6% of Illinois's records
  • Specialties present25 or more taxonomy codes
  • Top three groups21% of all records

Compared with Illinois as a whole, Crystal Lake has 2.5× the state's share of occupational therapy assistant records and 0.41× its share of internal medicine physician records.

Providers in Crystal Lake, alphabetically

  1. Ramesh Vemuri, M.D.Psychiatry Physician1164508149
  2. Nicholas Ventocilla, CRNACertified Registered Nurse Anesthetist1164876967
  3. Jon Verdoni, OTROccupational Therapist1447693437
  4. Rachel Vezeau, PTSpecialist1164638342
  5. Julie Vicencio, NPNurse Practitioner1356739452
  6. Debra Viger, RDH, BHS, PHDH, FADHDental Hygienist1407671399
  7. Jacob VincentBehavior Technician1215867924
  8. Nicole Vinci, RBT-17-41711Behavior Analyst1346739422
  9. Jessica VincoleseFamily Nurse Practitioner1548942147
  10. Christina Vocos, PSY.DClinical Neuropsychologist1275934150
  11. Besnik Vukaj, LPCCounselor1346078854
  12. Basia Wallace, OTD, OTR/LOccupational Therapist1770351991
  13. Ashley Wallen, APNFamily Nurse Practitioner1063758894
  14. Holly Walsh, M.S,. CCC-SLPSpeech-Language Pathologist1427556273
  15. Paul Wampler, HISHearing Instrument Specialist1982434684
  16. Katelynn WardBehavior Technician1801688171
  17. P Warnick, O.D.Optometrist1174738538
  18. Barbara Wasilk, MA, CCC/SLP-LSpeech-Language Pathologist1801141882
  19. Patricia Waskowiak, APRN, FNP-BCFamily Nurse Practitioner1336821537
  20. Tyler Watermann, DCChiropractor1952281917
  21. Shannon Watley, DOObstetrics & Gynecology Physician1205821121
  22. Molly Webb, CCC-SLP/LSpeech-Language Pathologist1164806576
  23. Eliza WeberPhysical Therapist1487766028
  24. Leslie Weckerlin, RPHPharmacist1730462136
  25. Kelsey Wedwick, ATCAthletic Trainer1154032274
  26. Kristin Weeks, LCSWClinical Social Worker1407156904
  27. Pamela Weeks, RN;LCSWClinical Social Worker1750832044
  28. Sharon Weise, P.T.Geriatric Physical Therapist1790868206
  29. Everett Weiss, M.D.Pediatrics Physician1700909728
  30. David Welch, LCPCProfessional Counselor1063582047
  31. Breanne WeltySpeech-Language Pathologist1932421708
  32. Todd Wenzon, D.D.S.General Practice Dentistry1700952058
  33. Thomas Weyburn, D.O.Medical Oncology Physician1487636478
  34. Constance White, MACounselor1649619537
  35. Amy Whitenack, MS IN CLIN. COUNSELIMental Health Counselor1548022700
  36. Laurie WhitlockOccupational Therapist1073752937
  37. Laura WhyteSpeech-Language Pathologist1447499744
  38. John WidgerPharmacist1295182186
  39. Brenda WierzbickiOccupational Therapist1598305088
  40. Natay WilfingerSpeech-Language Pathologist1720620388
  41. Earl Williams, MDEmergency Medicine Physician1912561077
  42. Erin Williams, FNP-CNurse Practitioner1093485948
  43. Jennifer Williams, PTPhysical Therapist1093825192
  44. Katherine Williams, MOTOccupational Therapist1336838879
  45. Kimberly Williams, SLPSpeech-Language Pathologist1366856312
  46. Laura Williams, P.T.Physical Therapist1962759936
  47. Megan Williams, LCSWSocial Worker1386031128
  48. Megan Williams, LSW, MSWMental Health Counselor1982309464
  49. Katie Wilson, D.M.D.General Practice Dentistry1588194229
  50. Paul Wilson, DDSGeneral Practice Dentistry1790827178

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

Crystal Lake, Illinois appears in the CMS National Plan and Provider Enumeration System with 1,442 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 Crystal Lake - 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 Crystal Lake 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 Crystal Lake is weighted toward Behavior Technician (120 clinicians, followed by Physical Therapist with 92 and Clinical Social Worker with 91). 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, Crystal Lake reports roughly 11.5 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Crystal Lake practice address, a coverage gap Crystal Lake patients typically fill by traveling to a larger nearby hub.

For Crystal Lake 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 Crystal Lake, IL?

There are 1,442 registered healthcare providers in Crystal Lake, IL, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Crystal Lake?

The most common specialties in Crystal Lake are Behavior Technician, Physical Therapist, Clinical Social Worker, Professional Counselor, Speech-Language Pathologist. Behavior Technician has the most providers with 120.

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.