2026 data CMS NPPES NUCC Taxonomy

Doctors in Janesville, WI

Compiled from official public sources by the PlainDoctor editorial team.

Active healthcare providers in Janesville sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

1,510
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Physical Therapist
Top specialty
75 providers
Wisconsin
State
WI

1,510 healthcare providers across 20 specialties

Janesville, Wisconsin appears in the CMS National Plan and Provider Enumeration System with 1,510 registered healthcare providers spanning 20 distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Janesville - 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 Janesville 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 2023 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Janesville is weighted toward Physical Therapist (75 clinicians, followed by Social Worker with 74 and Registered Nurse with 72). 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 Wisconsin's population, Janesville reports roughly 25.5 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.

Within Wisconsin, Janesville ranks #12 of 363 cities tracked by provider count, accounting for 1.4% of the state's registered providers.

For Janesville patients, this directory is most useful as a starting shortlist, searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

1,510
Providers
20
Specialties
#12
of 363 WI cities
1.4%
of WI providers
25.5
Per 100K (state)

Which specialties are most common in Janesville

Physical Therapist 75
Social Worker 74
Registered Nurse 72
Pharmacist 70
Professional Counselor 66
Family Medicine Physician 63
Addiction (Substance Use Disorder) Counselor 57
Occupational Therapist 52
Clinical Social Worker 50
Speech-Language Pathologist 45
Physical Therapy Assistant 41
Student in an Organized Health Care Education/Training Program 40
General Practice Dentistry 39
Dentist 39
Nurse Practitioner 37
Emergency Medicine Physician 35
Internal Medicine Physician 34
Counselor 31
Chiropractor 30
Physician Assistant 28

Healthcare Providers (Page 11)

Name
Perka Guenev, M.D.
Family Medicine Physician
Brooke Guenther
Addiction (Substance Use Disorder) Counselor
Debra Guisleman, SOCIAL WORKER
Social Worker
Eugene Gulliver, MD
Internal Medicine Physician
Katherine Gunderson, PA-C
Physician Assistant
Wisteria Gunnink, MSW
Clinical Social Worker
Nicole Gutzman, LPC, NCC
Professional Counselor
Brett Haarmann, PA-C
Physician Assistant
Thomas Haas, DO
Anatomic Pathology & Clinical Pathology Physician
Brianna Haase
Mental Health Counselor
Brianna Hadley
Social Worker
Fallon Hagen, PHARM.D.
Pharmacist
Brianna Hahn, SAC-IT
Addiction (Substance Use Disorder) Counselor
Leanne Hahn, MD
Family Medicine Physician
Ashruti Hitendra Hajari, MD
Student in an Organized Health Care Education/Training Program
Hassan Haji-Abdirahman, MD
Hospitalist Physician
Christopher Hall, MD
Family Medicine Physician
Dorraine Hallett, OTA
Occupational Therapy Assistant
Jennifer Hamilton, PA-C
Physician Assistant
Suzanne Hamilton, SLP
Speech-Language Pathologist
Emma Hammer, CCC-SLP
Speech-Language Pathologist
Alyssa Hanekamp, RN
Critical Care Medicine Registered Nurse
Jaylene Hanel, LMT
Massage Therapist
Lenore Hanewold, LPN
Licensed Practical Nurse
Lori Hanewold, D.C.
Chiropractor
Maria Haning, SLP
Speech-Language Pathologist
Donald Hanneman, D.D.S.
General Practice Dentistry
Hilary Hannon-McFarland, MFT
Marriage & Family Therapist
Abigail Hansen, ATC, LAT
Athletic Trainer
Emily Hansen, MS, CF-SLP
Speech-Language Pathologist
Rachel Hansen
Clinical Child & Adolescent Psychologist
Cynthia Hanson, APNP
Clinical Nurse Specialist
James Hanson, MD
Diagnostic Radiology Physician
Abby Harnack, RN
Pediatric Registered Nurse
Benjamin Harris, DDS
General Practice Dentistry
Kristin Harris, CRNA
Certified Registered Nurse Anesthetist
Sarah Harris, LPC
Professional Counselor
Raymond Harrison
Addiction (Substance Use Disorder) Counselor
Lauren Hatchett, SLP
Speech-Language Pathologist
Mark Hautala, M.D.
Anesthesiology Physician
Stacie Haworth, M.P.T.
Pediatric Physical Therapist
John Haye, D.D.S.
General Practice Dentistry
Jaclyn Hebert, LPC, CSAC
Addiction (Substance Use Disorder) Counselor
Reina Heckburn, MD
Student in an Organized Health Care Education/Training Program
Daniel Hehn, D.D.S.
Dentist
Shannon Heidt, APRN
Registered Nurse
Brenda Hein-Drew
Mental Health Counselor
Corina Helgestad, MA, LPC
Professional Counselor
Heather Helgestad
Social Worker
Karen Hembrook, LCSW
Clinical Social Worker

Nearby Cities in Wisconsin

Other Wisconsin cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Janesville, WI?
There are 1,510 registered healthcare providers in Janesville, WI, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Janesville?
The most common specialties in Janesville are Physical Therapist, Social Worker, Registered Nurse, Pharmacist, Professional Counselor. Physical Therapist has the most providers with 75.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.

Compiled from official public sources by the PlainDoctor editorial team.