Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

David M McMahon, DO

Individual provider Psychiatry Physician · NPI 1457662249

David M McMahon, DO is a Psychiatry in Green Bay, Wisconsin. Graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2010, 16 years ago. Practices with Affiliated Clinical Services Inc, a 22-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
16
Trained at
Des Moines University of Osteopathic Medicine and Health Sciences
Licensed in
WI
In the registry since
2010
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

301 E Saint Joseph St
Green Bay, WI 54301-2241
Phone: (920) 433-3630
Fax: (920) 437-0533
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 63216-21 (WI)

Record details

NPI number1457662249
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 25, 2010
Last updated in NPPESOctober 18, 2021
Certification dateOctober 18, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolDES MOINES UNIVERSITY OF OSTEOPATHIC MEDICINE AND HEALTH SCIENCES
Graduated 2010 (16 years in practice)
Group practice Affiliated Clinical Services Inc — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Other providers in Green Bay