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 16 of 29.
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
- Jake Laukert, PT, DPTPhysical Therapist1386440360
- Lawrence Lavine, M.D.Pain Medicine (Anesthesiology) Physician1336119171
- Jennifer Lawrence, C.N.P.Family Nurse Practitioner1073066437
- Julia Lawrence, LCPCProfessional Counselor1881011724
- Paiton LawrenceBehavior Technician1801770003
- Jeremy Lawson, DCChiropractor1619652286
- Christian Lazaro-Marshall, PHARMDPharmacist1215774575
- Madison LazenbyOccupational Therapy Assistant1699560557
- Michael Leavitt, DPTPhysical Therapist1255688800
- Julia Leblanc, MDGastroenterology Physician1467416990
- Nikki Lechel, RTCardiovascular-Interventional Technology Radiologic Technologist1043030679
- Jenna Lee, DPTPhysical Therapist1528610268
- Jerelyn LeeSocial Worker1699475723
- Jessica Lee, DPTPhysical Therapist1801562145
- John Lee, PHARMDPharmacist1538763107
- Soo Lee - Samuel, MDChild & Adolescent Psychiatry Physician1275683211
- Genevieve LeenanSpeech-Language Pathologist1649482829
- Gregory Lehman, DDSOral and Maxillofacial Surgery (Dentist)1477592061
- Malinda Lehman, MHP, LSWSocial Worker1154273852
- Michelle Lehn, FNP-BC, FPAFamily Nurse Practitioner1376183467
- Erin LeibSpeech-Language Pathologist1538992789
- Ronald Leib, DPMFoot & Ankle Surgery Podiatrist1548315021
- Annie Leinart, PA-CPhysician Assistant1467311274
- Sara Lemke, M.A., LPCMental Health Counselor1932427275
- Briahna LenihanBehavior Technician1629835368
- Nadine LepleySocial Worker1346697414
- Michael Lesser, MDFamily Medicine Physician1760593032
- Stephanie LethebyBehavior Technician1346907482
- Laura Leukaufe, LMTMassage Therapist1093194391
- Dawn Levitan, MS., ED.D., LCPCCognitive & Behavioral Psychologist1013091750
- John Lewandowski, PSYDPsychologist1104307917
- Yanbing Li, M.D.Family Medicine Physician1104843739
- Mary Liethen, M.S., CCC-SLP/LSpeech-Language Pathologist1609381672
- Jacki Liggett, APN, FNPFamily Nurse Practitioner1194102053
- Kathleen Ligon, LCSWClinical Social Worker1164434643
- Ryane LikarSocial Worker1316711039
- Donna Lilly, BTBehavior Technician1902676885
- Brendon Lin, MDPhysical Medicine & Rehabilitation Physician1326612730
- Rachel LindenSpeech-Language Pathologist1902223290
- Kylie LindquistBehavior Technician1013895895
- Sheri Lindsey, LSWSocial Worker1093423733
- Nelle Link, DPTPhysical Therapist1073127635
- Jerry Liu, M.D.Hematology & Oncology Physician1356551899
- Haley Lochan, LCSWCounselor1528672839
- Rebecca Lockwood, PH.D.Clinical Psychologist1295922482
- Lindsay Loehner, FNP-BCObstetrics & Gynecology Nurse Practitioner1336561646
- Tana Lombardo, APRNFamily Nurse Practitioner1184320988
- Megan Long, DPTPhysical Therapist1679614556
- Luigi Longo, PHARM.D.Pharmacist1760767917
- Jennifer Loose, D.C.Chiropractor1437283611
The largest Illinois cities
- Chicago63,379
- Springfield4,997
- Naperville4,634
- Peoria4,621
- Evanston4,013
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.