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 17 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
- Natalie LopezBehavior Technician1649077629
- Erin Lopresti, M.S, LPC, NCC, CADCProfessional Counselor1275873739
- Zbigniew Lorenc, MDInternal Medicine Physician1902879380
- Susan Loring, MDFamily Medicine Physician1487735528
- Macy Lossau, LSWSocial Worker1225923337
- Christen Louderman, DPTPhysical Therapist1093921918
- Michael Louise, D.C.Chiropractor1689743767
- Madeline Lubenow, APN-CRNACertified Registered Nurse Anesthetist1265996631
- Catherine LucaccioniCounselor1124988134
- Lauren Lucas, MDFamily Medicine Physician1083307441
- Joanne Lundstrom, COTA/LOccupational Therapy Assistant1548452139
- Michael LypBehavior Technician1427512615
- Cynthia Macdonald, DNPFamily Nurse Practitioner1609988187
- Thakshakamani Madamala, MDPsychiatry Physician1588663843
- Jamel MadisonSocial Worker1770930836
- Sheryl Magee, M.SP.T.Pediatric Physical Therapist1578580932
- Lauri Maguire, OTAOccupational Therapy Assistant1891342622
- Erich Mahalko, CFASurgical Assistant1407112501
- Brooke MaherClinical Social Worker1811506777
- Raeesa MahmoodOccupational Therapy Assistant1366001067
- Caitlyn Mahoney, RBTBehavior Technician1407535206
- Preksha MaiyaPhysical Therapist1750938668
- Shannon Malone, FNP-BCFamily Nurse Practitioner1033826060
- Pamela MaloneyFamily Nurse Practitioner1871267997
- Maria Mangiardi, LCPCProfessional Counselor1427423748
- Carly ManleyFamily Nurse Practitioner1669244489
- Leslie Mann, LPNLicensed Practical Nurse1477742468
- Nicole Manuel, APNAdult Health Clinical Nurse Specialist1396250320
- Adam MarchiorelloMental Health Counselor1780245688
- Lilli-Jayne Mariano, P.T.Physical Therapist1740206374
- Douglas MarksPharmacist1699389221
- Dana Marolt, MSWClinical Social Worker1679216428
- Reilly MartinSpeech-Language Pathologist1316784424
- Heather Masters, RDRegistered Dietitian1922480342
- Jessica MataCounselor1053126094
- Glen Matejka, DN DC DACBN CCNChiropractor1366404568
- Nisha MathewPharmacist1376990820
- Brittany Matthiesen, LSWSocial Worker1841844206
- Barbara Maulding, LCPCProfessional Counselor1710352422
- Emily MaynardBehavior Technician1376437582
- James Mc Ginn, DCInternist Chiropractor1851346498
- Danya McArthur-DoudouBehavior Analyst1861837957
- Despina McBride, MA, LCPCProfessional Counselor1164720215
- Brian McCallumCounselor1962775734
- Maureen McCarthy, MA, CCC/SLP-LSpeech-Language Pathologist1285983957
- Michelle McClellan, PSY DClinical Psychologist1881704708
- Caitlyn McClure, DSW, LCSWSocial Worker1124483060
- Richard McCoy, D. C.Chiropractor1376536060
- Lucas McCully, DCChiropractor1154567659
- Jill McCutcheon, LSCWClinical Social Worker1952478562
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.