Doctors and health care providers in Marion, IA
260 individual NPPES records list a practice address in Marion, 33rd of 215 Iowa cities. The largest group is behavior technician: 26, 10% of the city's records, against 2% across Iowa. Page 6 of 6.
The 8 largest groups in Marion
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Marion in Iowa
- Rank in Iowa33rd of 215 cities by records
- Share of the state0.5% of Iowa's records
- Specialties present25 or more taxonomy codes
- Top three groups26.2% of all records
Compared with Iowa as a whole, Marion has 5× the state's share of marriage & family therapist records.
Providers in Marion, alphabetically
- Lynette Williams, MA, LMFTMarriage & Family Therapist1508403593
- Jenna WillisClinical Social Worker1942716600
- Timothy Winters, MDFamily Medicine Physician1922085992
- Zachary Wittenburg, PHARMDPharmacist1124643895
- Lauren WoodMental Health Counselor1295216836
- Lisa Woodruff, RDNRegistered Dietitian1669064267
- Elaine YarnlayDriver1659076925
- Skyla YeringtonBehavior Technician1942164132
- Arleen Zahn-Houser, MDFamily Medicine Physician1396704037
- Cassandra Zimmerman, DNP, ARNPPrimary Care Nurse Practitioner1649922410
The largest Iowa cities
- Iowa City7,163
- Des Moines5,538
- Cedar Rapids2,949
- West Des Moines2,201
- Davenport2,058
How to read this directory
Marion, Iowa appears in the CMS National Plan and Provider Enumeration System with 260 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 Marion - 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 Marion 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 Marion is weighted toward Behavior Technician (26 clinicians, followed by Physical Therapist with 23 and Pharmacist with 19). 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 Iowa's population, Marion reports roughly 8.1 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 Iowa's most common specialties, Nurse Practitioner is the most prominent one with no provider currently listing a Marion practice address, a coverage gap Marion patients typically fill by traveling to a larger nearby hub.
For Marion 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 Marion, IA?
There are 260 registered healthcare providers in Marion, IA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Marion?
The most common specialties in Marion are Behavior Technician, Physical Therapist, Pharmacist, Chiropractor, Mental Health Counselor. Behavior Technician has the most providers with 26.
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.