DAVID M MCMAHON DO
NPI 1457662249
Psychiatry & Neurology - Psychiatry in Green Bay, WI
About David M Mcmahon Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID M MCMAHON DO (NPI 1457662249) is an individual psychiatry provider in Green Bay, Wisconsin, licensed in Wisconsin (63216-21) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS and is a graduate of Des Moines University Of Osteopathic Medicine And Health Sciences (2010).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
David M Mcmahon Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show David Mcmahon reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Bend, WI 53095
- Reassigned Medicare billing, Wisconsin enrollment
- 33 clinicians in this Medicare group
Wausau, WI 54403
- Reassigned Medicare billing, Wisconsin enrollment
- 47 clinicians in this Medicare group
Kenosha, WI 53144
- Reassigned Medicare billing, Wisconsin enrollment
- 16 clinicians in this Medicare group
Rockford, IL 61107
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Rockford Psychiatric Medical Services Sc
- 16 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREEN BAY, WI 54301
GREEN BAY, WI 54301
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is David Mcmahon's NPI number?
The NPI number for David Mcmahon is 1457662249. It was assigned to this individual provider in the NPPES registry on June 25, 2010.
Where is David Mcmahon located?
David Mcmahon practices at 301 E Saint Joseph St, Green Bay, WI 54301. The listed phone number is (920) 433-3630.
What is David Mcmahon's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is David Mcmahon enrolled in Medicare?
Yes. David Mcmahon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for David Mcmahon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Mcmahon reassigns Medicare benefits to 4 organizations: Affiliated Clinical Services Inc (West Bend, WI), Human Services Board Serving North Central Health Care Facility (Wausau, WI), Ganesha Institute Of Neurology And Psychiatry Sc (Kenosha, WI) and Rockford Psychiatric Medical Services, S.C. (Rockford, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for David Mcmahon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Mcmahon accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, MercyCare, MercyCare Health Plans and Quartz and 1 other insurer list David Mcmahon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for David Mcmahon was last updated on October 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# David M Mcmahon, DO · NPI 1457662249
Psychiatry physician in Green Bay, Wisconsin. Individual provider, active in the CMS NPPES registry since June 25, 2010.
## Identity
- **NPI:** 1457662249 (Entity type: Individual)
- **Enumerated:** June 25, 2010
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 63216-21 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 301 E SAINT JOSEPH ST, Green Bay, WI 54301-2241
- **Phone:** (920) 433-3630 · **Fax:** (920) 437-0533
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Affiliated Clinical Services Inc (NPI 1851473698, West Bend, WI); Human Services Board Serving North Central Health Care Facility (NPI 1205944543, Wausau, WI); Ganesha Institute Of Neurology And Psychiatry Sc (NPI 1619731320, Kenosha, WI); Rockford Psychiatric Medical Services, S.C. (NPI 1821391442, Rockford, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Des Moines University Of Osteopathic Medicine And Health Sciences, class of 2010
## Record status
- **NPPES last updated:** October 18, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1457662249) · Data from the CMS NPPES public registry.