2026 data CMS NPPES NUCC Taxonomy

Doctors in Marshfield, WI

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

1,300
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Internal Medicine Physician
Top specialty
96 providers
Wisconsin
State
WI

1,300 healthcare providers across 20 specialties

Marshfield, Wisconsin appears in the CMS National Plan and Provider Enumeration System with 1,300 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 Marshfield — 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 Marshfield practice location on file.

The provider mix in Marshfield is weighted toward Internal Medicine Physician (96 clinicians, followed by Student in an Organized Health Care Education/Training Program with 94 and Nurse Practitioner with 56). 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, Marshfield reports roughly 22 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.

For Marshfield 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 NPPES data is self-reported and refreshed monthly, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.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.

1,300
Providers
20
Specialties
22
Per 100K (state)

Which specialties are most common in Marshfield

Internal Medicine Physician 96
Student in an Organized Health Care Education/Training Program 94
Nurse Practitioner 56
Physician Assistant 53
Pediatrics Physician 52
Physical Therapist 50
Registered Nurse 43
Family Nurse Practitioner 39
Pharmacist 38
Certified Registered Nurse Anesthetist 37
Occupational Therapist 34
Anesthesiology Physician 30
Speech-Language Pathologist 28
Dentist 24
Diagnostic Radiology Physician 22
Psychologist 21
Anatomic Pathology & Clinical Pathology Physician 20
Cardiovascular Disease Physician 20
Social Worker 20
Surgery Physician 19

Healthcare Providers (Page 17)

Name
JENNIFER NELSON
Occupational Therapist
RICHARD NESBITT, PAC
Physician Assistant
HAZEL NEUFELD, PA C
Physician Assistant
STEPHANIE NEWLUN, FNP
Family Nurse Practitioner
ROBERT NICHOLS, PHARMD
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist
BRITTANY NIKOLAY, DPT
Physical Therapist
MATTHEW NIKOLAY, DC
Chiropractor
VIJAYA NIRUJOGI, M.D.
Surgery Physician
MOLLY NOFFKE, OT
Occupational Therapist
MORGAN NORDBECK, PA
Physician Assistant
NED NORDIN, MD
Anesthesiology Physician
KELLY NOREEN, NP
Nurse Practitioner
FRANK NORTH, MD
Anesthesiology Physician
JESUS NUNEZ-GORNES, MD
Gastroenterology Physician
JOHN O'BRIEN, DDS
General Practice Dentistry
TIFFANY O'BRIEN, DDS
General Practice Dentistry
DIARMUID O'NEILL, MD
Anesthesiology Physician
NIAV O'NEILL, MD
Student in an Organized Health Care Education/Training Program
JEFFREY O'REILLY
Registered Nurse
MICHAEL OBERG, MD
Psychiatry Physician
KRISTEN OBERNBERGER, RN
Registered Nurse
RACHEL OCCHIOGROSSO, MD
Pediatrics Physician
KATE OCONNOR, NP
Nurse Practitioner
KATHARINE ODELL, PHD, CCC-SLP
Speech-Language Pathologist
REBEKAH OETKEN, R.N.
Licensed Practical Nurse
KELSIE-MARIE OFFENWANGER, PSY.D
Clinical Child & Adolescent Psychologist
JANE OHDE, DO
Surgery Physician
ADAORA OKOLI, MD
Infectious Disease Physician
JENNIFER OKON, R.D., C.D.E., C.D.
Registered Dietitian
ASHA OKORIE, MD
Ophthalmology Physician
UZOMA OKORIE, MD
Pediatric Cardiology Physician
WARREN OLDS, MD
Radiation Oncology Physician
MADELINE OLEKSY, LAT
Athletic Trainer
MATTHEW OLEY
Student in an Organized Health Care Education/Training Program
GARY OLSEN, PHD
Psychologist
JERRY OLSON, LPC CADC III
Addiction (Substance Use Disorder) Counselor
JOHN OLSON, MD
Internal Medicine Physician
KARI JO OLSON, PTA
Physical Therapy Assistant
MICHAEL OLSON, DDS MS
Dentist
THEODORE OLSON, PHD
Psychologist
TRACY OLSON, MSW
Social Worker
JEFFREY ONGNA, MS, LPC
Professional Counselor
JAMES OPITZ, MD
Pediatrics Physician
CHRISTOPHER ORDONEZ, M.D.
Pediatrics Physician
JOHN ORTH, CRNA
Certified Registered Nurse Anesthetist
JILL ORZEHOSKIE, MPT
Physical Therapist
P OSBORNE, C.O.
Orthotist
ANASTASIA OSIPOVA, MD,PHD
Gynecology Physician
KERI OTTE, MSW, APSW
Social Worker
GARY OVASKA, C.O.
Orthotist

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 Marshfield, WI?
There are 1,300 registered healthcare providers in Marshfield, WI, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Marshfield?
The most common specialties in Marshfield are Internal Medicine Physician, Student in an Organized Health Care Education/Training Program, Nurse Practitioner, Physician Assistant, Pediatrics Physician. Internal Medicine Physician has the most providers with 96.

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.