2026 data CMS NPPES NUCC Taxonomy

Doctors in Milwaukee, WI

Compiled from official public sources by the PlainDoctor editorial team.

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

17,774
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Student in an Organized Health Care Education/Training Program
Top specialty
1,318 providers
Wisconsin
State
WI

17,774 healthcare providers across 20 specialties

Milwaukee, Wisconsin appears in the CMS National Plan and Provider Enumeration System with 17,774 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 Milwaukee - 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 Milwaukee 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 Milwaukee is weighted toward Student in an Organized Health Care Education/Training Program (1,318 clinicians, followed by Pharmacist with 827 and Physician Assistant with 757). 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, Milwaukee reports roughly 300.7 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, Milwaukee ranks #1 of 363 cities tracked by provider count, accounting for 16.1% of the state's registered providers.

For Milwaukee 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.

17,774
Providers
20
Specialties
#1
of 363 WI cities
16.1%
of WI providers
300.7
Per 100K (state)

Which specialties are most common in Milwaukee

Student in an Organized Health Care Education/Training Program 1,318
Pharmacist 827
Physician Assistant 757
Registered Nurse 681
Internal Medicine Physician 650
Nurse Practitioner 632
Physical Therapist 566
Clinical Social Worker 552
Family Nurse Practitioner 420
Professional Counselor 420
Addiction (Substance Use Disorder) Counselor 409
Mental Health Counselor 380
Occupational Therapist 371
Anesthesiology Physician 361
Licensed Practical Nurse 358
Emergency Medicine Physician 339
Case Manager/Care Coordinator 307
Pediatrics Physician 289
Speech-Language Pathologist 282
Family Medicine Physician 282

Healthcare Providers (Page 231)

Name
Audra O'Brien, MFT-IT
Marriage & Family Therapist
Bridget O'Brien, MD
Pediatrics Physician
Bridget O'Brien, D.P.T.
Physical Therapist
Cara O'Brien, M.D.
Geriatric Medicine (Internal Medicine) Physician
Claire O'Brien
Emergency Medicine Physician
Daniel O'Brien, M.D.
Transplant Surgery Physician
Holly O'Brien
Physical Therapist
Jane O'Brien, RN
Registered Nurse
Jessica O'Brien, MD
Family Medicine Physician
Katelyn O'Brien, RD
Registered Dietitian
Kathryn O'Brien
Speech-Language Pathologist
Kevin O'Brien, LCSW, LMFT
Marriage & Family Therapist
Marina O'Brien, PA-C
Physician Assistant
Shannon O'Brien, MSW, LCSW, CSAC,CTS
Addiction (Substance Use Disorder) Counselor
Vanessa O'Brien, PT
Physical Therapist
William O'Brien, DDS
Prosthodontics
Marian O'Brien-Frigo, MSW
Clinical Social Worker
Lisa O'Connell, M.S. CCC-SLP
Speech-Language Pathologist
Megan O'Connell, M.D.
Anesthesiology Physician
Alyssa O'Connor, APNP
Nurse Practitioner
Jamie O'Connor, LCSW
Clinical Social Worker
Kathleen O'Connor, MS, LPC, ATR
Mental Health Counselor
Kathleen O'Connor, OTR
Occupational Therapist
Paige O'Connor
Registered Nurse
Stacy O'Connor, M.D.
Diagnostic Radiology Physician
Staci O'Dell, APNP
Psychiatric/Mental Health Registered Nurse
Stephanie O'Dell, NP
Nurse Practitioner
Christine O'Donnell, LCSW
Mental Health Counselor
Collin O'Donnell
Physician Assistant
Sharon O'Dwyer, APNP
Family Nurse Practitioner
Joseph O'Grady, M.D.
Child & Adolescent Psychiatry Physician
Kirk O'Hanison, NP
Family Nurse Practitioner
Molly O'Hearn, AUD
Audiologist
Emmeline O'Leary, MD
Anesthesiology Physician
Trisha O'Leary, MSW
Clinical Social Worker
Laura O'Loughlin, APNP
Psychiatric/Mental Health Nurse Practitioner
Jenni O'Malley, RN
Case Manager/Care Coordinator
William O'Meally, M.D.
Occupational Medicine Physician
Jessica O'Neil, PT
Physical Therapist
Connor O'Neill, DO
Student in an Organized Health Care Education/Training Program
Darren O'Neill, M.D.
Neuroradiology Physician
Mitchell O'Neill, M.D.
Physical Medicine & Rehabilitation Physician
Peggy O'Neill, R. EEG/EPT CNIM
Electroneurodiagnostic Specialist/Technologist
Ashley O'Rourke, PT, DPT
Physical Therapist
Mary O'Rourke, OTR
Occupational Therapist
Dawn O'Shea-Farley, MS
Mental Health Counselor
Susan Oakley, RPH
Pharmacist
Martin Oaks, PH.D.
Ph.D. Medical Genetics
Joanna Obaoye, MD
Student in an Organized Health Care Education/Training Program
Ahmed Obeidat, M.D., P.H.D
Neurology with Special Qualifications in Child Neurology Physician

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 Milwaukee, WI?
There are 17,774 registered healthcare providers in Milwaukee, WI, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Milwaukee?
The most common specialties in Milwaukee are Student in an Organized Health Care Education/Training Program, Pharmacist, Physician Assistant, Registered Nurse, Internal Medicine Physician. Student in an Organized Health Care Education/Training Program has the most providers with 1,318.

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.