David M. McMahon, DO
Psychiatry Physician · Green Bay, WI
David M. McMahon, DO is a psychiatry physician with a practice address in Green Bay, Wisconsin, and NPI 1457662249, issued on Jun 25, 2010. Check the license (Wisconsin 63216-21, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- David M. McMahon
- Credential
- DO
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 63216-21 WI
Self-reported in NPPES; status is on the state search - Practice location
- 301 E Saint Joseph St, Green Bay, WI 54301
- Phone
- (920) 433-3630
- Enumerated
- Jun 25, 2010
- Record last updated
- Oct 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (920) 437-0533
- Medicare enrollment
- Enrolled (PECOS I20141212001730); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 929 in Wisconsin → Look up another NPI →
Also registered at 301 E Saint Joseph St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tamara Baldwin, APNPNurse Practitioner1518942937
- Denise Balzola, MSWMental Health Counselor1528043858
- Pamela Baranczyk, LCSW,SACClinical Social Worker1518134014
- Kathryn Bassett, QTTClinical Social Worker1740764182
- Bliss Baudhuin, LPCCounselor1881679124
- Sarah Baumgartner, PHDPsychologist1992086748
Verify David M. McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 63216-21Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average psychiatry physician in 2024
2,135 Medicare Part D claims for 199 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Aripiprazole118 claims
- Buspirone Hcl114 claims
- Quetiapine Fumarate107 claims
- Duloxetine Hcl89 claims
- Trazodone Hcl89 claims
- Lorazepam88 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,395.95
61 payments; by number, the most common kind was food and beverage; the largest payer was Indivior Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Affiliated Clinical Services IncWest Bend, WI
- Human Services Board Serving North Central Health Care FacilityWausau, WI
- Rockford Psychiatric Medical Services SCWauwatosa, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David M. McMahon among 929 psychiatry physician records in Wisconsin
David M. McMahon, DO is one of 929 psychiatry physician records with a practice address in Wisconsin. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 33% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Graduated2010 · median 2005 among the 439 with a school on file
- Record last updated2021 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Wisconsin
There are 929 psychiatry physician records in Wisconsin.
All 929 in Wisconsin → Every provider in Green Bay → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Carlos Castillo, MDGreen Bay, WI 543011659358620
- John Charles, MDGreen Bay, WI 543011104801877
- Naciye Kalafat, M.D.Green Bay, WI 543011861459612
- Anthony Marchlewski, MDGreen Bay, WI 543011295710432
- Victoria Passov, MDGreen Bay, WI 543011891838173
- Emily Rademacher, D.O., M.B.A.Green Bay, WI 543011033406038
- Alexis Rojas, M.D., M.P.H.Green Bay, WI 543011942648191
- Alexandra Rush, M.D.Green Bay, WI 543011295260784
Common questions
What is David M. McMahon, DO's NPI number?
David M. McMahon, DO's National Provider Identifier (NPI) is 1457662249, issued on Jun 25, 2010. An NPI identifies a provider in billing; it is not a license.
Where is David M. McMahon, DO located?
The NPPES record lists a practice address at 301 E Saint Joseph St, Green Bay, WI, 54301. Phone: (920) 433-3630. Providers update this record themselves, so call before visiting.
How can I verify David M. McMahon, DO's license?
NPPES lists Wisconsin license number 63216-21, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David M. McMahon, DO prescribe under Medicare Part D?
In 2024, David M. McMahon, DO had 2,135 Medicare Part D claims for 199 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.