MR. PATRICK MICHAEL MAHON ACNPC-AG, PMHNP-BC
NPI 1124610928
Nurse Practitioner - Psychiatric/Mental Health in Glyndon, MD
About Mr. Patrick Michael Mahon Acnpc-ag, Pmhnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. PATRICK MICHAEL MAHON ACNPC-AG, PMHNP-BC (NPI 1124610928) is an individual psychiatric/mental health provider in Glyndon, Maryland, licensed in Maryland (R224708) and active in the NPI registry since February 2021. He is enrolled in Medicare PECOS, is affiliated with Sinai Hospital Of Baltimore, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mr. Patrick Michael Mahon Acnpc-ag, Pmhnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Patrick Mahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Owings Mills, MD 21117
- Reassigned Medicare billing, Maryland enrollment
- 664 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 2
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sinai Hospital Of Baltimore
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21136 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Patrick Mahon's NPI number?
The NPI number for Patrick Mahon is 1124610928. It was assigned to this individual provider in the NPPES registry on February 3, 2021.
Where is Patrick Mahon located?
Patrick Mahon practices at 4821 Butler Rd Ste 2A, Glyndon, MD 21136. The listed phone number is (410) 449-0182.
What is Patrick Mahon's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Patrick Mahon enrolled in Medicare?
Yes. Patrick Mahon is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Patrick Mahon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Mahon reassigns Medicare benefits to Sinai Hospital Of Baltimore Inc (Owings Mills, MD). The 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 Patrick Mahon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Patrick Mahon affiliated with any hospitals?
According to CMS data, Patrick Mahon is affiliated with Sinai Hospital Of Baltimore.
When was this NPI record last updated?
The NPPES record for Patrick Mahon was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days 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.
# Mr. Patrick Michael Mahon, ACNPC-AG, PMHNP-BC · NPI 1124610928
Psychiatric/Mental Health physician in Glyndon, Maryland. Individual provider, active in the CMS NPPES registry since February 3, 2021.
## Identity
- **NPI:** 1124610928 (Entity type: Individual)
- **Enumerated:** February 3, 2021
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** R224708 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4821 BUTLER RD STE 2A, Glyndon, MD 21136-5688
- **Phone:** (410) 449-0182 · **Fax:** (410) 297-0728
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Sinai Hospital Of Baltimore Inc (NPI 1891705430, Owings Mills, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** October 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124610928) · Data from the CMS NPPES public registry.