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 11 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
- Gretchen Graham, D.C., PTPhysical Therapist1336330208
- Brooke GrandtOccupational Therapist1558763581
- Amber GratzBehavior Analyst1134609191
- Mark Gravdal, R.PH., CGPGeriatric Pharmacist1780988535
- Jesse GreenMental Health Counselor1316679699
- Stephanie GreenMarriage & Family Therapist1922947985
- Ziv Greenfeld, DOM, LIC ACAcupuncturist1851678452
- Shira Greenfield, LCPCProfessional Counselor1356340665
- Brandi Gries, LCPCMental Health Counselor1790216679
- Megan Griesman, APRNNurse Practitioner1710603121
- Shareikka Griffin, PA-CPhysician Assistant1396363644
- James Grimm, LCPCProfessional Counselor1164728374
- Paul Grindstaff, MDNeurology Physician1811948854
- Brian GrisetoBehavior Technician1902459720
- Edward Groenendal, MAProfessional Counselor1629185475
- Lindsay Grosscup, NPRegistered Nurse1144077280
- Tyler Grotti, DPTOrthopedic Physical Therapist1568197457
- Victoria GrudzienSpeech-Language Pathologist1720896152
- Gary Gruebnau, LSW MASTERSSocial Worker1295873859
- Grace GrzybekPharmacist1255108866
- Linda Gullo, LCPCMental Health Counselor1639197858
- Edwin Gumapas, MDPsychiatry Physician1033101092
- Eshwar Gumidyala, MDPsychiatry Physician1891794137
- Sanjeev Gupta, MDInternal Medicine Physician1659471175
- Rachel GussmanCounselor1295554855
- Abigail GuthriePhysical Therapy Assistant1821811274
- Jamie GutierrezPhysical Therapy Assistant1912756453
- Tonya HaaseDevelopmental Therapist1558894717
- Aubrey Haddican, M.S., OTR/LPediatric Occupational Therapist1134705544
- Linda Hadlock, LCSWClinical Social Worker1740042357
- Rebecca Hahnfeld, LCPCProfessional Counselor1154545432
- Shabana HaiderPharmacist1417558685
- Syed Haider, M.D.Internal Medicine Physician1912017898
- Henna Hakala, PTAPhysical Therapy Assistant1851167746
- Randy Halihan, DDSGeneral Practice Dentistry1043387335
- Christine HallDevelopmental Therapist1831540228
- Ronald Hall, LCPCMental Health Counselor1457582181
- Lindsey Halpern-Givens, LCPCProfessional Counselor1124314414
- Lindsey Hammonds, LCSW, CADCClinical Social Worker1568018224
- Ramadan Hammoud, M.D.Endocrinology, Diabetes & Metabolism Physician1134328719
- Daniel HannemanProfessional Counselor1083738694
- Katharine Hansen, LCSWClinical Social Worker1376933952
- Richard Hansen, D.D.S.Orthodontics and Dentofacial Orthopedics Dentistry1174666572
- Veronica HardtBehavior Analyst1487499109
- Ayesha HaroonBehavior Technician1275187239
- Jack Harris, DMDOral and Maxillofacial Surgery (Dentist)1427706035
- Mary Harris, DDSDentist1417471327
- Ann Hart, MS,PTPhysical Therapist1174756308
- Theodore Hartman, OTR/LOccupational Therapist1518597509
- Anne Haseman, PTPhysical Therapist1700988250
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.