MARGARET L. MASON
NPI 1033610746
Nurse Practitioner in Baltimore, MD
About Margaret L. Mason NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET L. MASON (NPI 1033610746) is an individual nurse practitioner in Baltimore, Maryland, licensed in Maryland (R238423) and active in the NPI registry since February 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Louisville, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Margaret L. Mason 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 Margaret Mason reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glen Burnie, MD 21061
- Reassigned Medicare billing, District of Columbia enrollment
- 136 clinicians in this Medicare group
Hughesville, MD 20637
- Reassigned Medicare billing, Maryland enrollment
Roanoke, VA 24011
- Reassigned Medicare billing, Virginia enrollment
- 194 clinicians in this Medicare group
Chillicothe, OH 45601
- Reassigned Medicare billing, Virginia enrollment
- 210 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21215 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 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21215
BALTIMORE, MD 21215
BALTIMORE, MD 21215
BALTIMORE, MD 21215
BALTIMORE, MD 21215
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 Margaret Mason's NPI number?
The NPI number for Margaret Mason is 1033610746. It was assigned to this individual provider in the NPPES registry on February 27, 2018.
Where is Margaret Mason located?
Margaret Mason practices at 2525 W Belvedere Ave, Baltimore, MD 21215. The listed phone number is (410) 367-9100.
What is Margaret Mason's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Margaret Mason enrolled in Medicare?
Yes. Margaret Mason 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 Margaret Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Mason reassigns Medicare benefits to 4 organizations: Mdics Rehabilitative Services LLC (Glen Burnie, MD), Align Wellness Suite LLC (Hughesville, MD), Universal Health Corporation (Roanoke, VA) and Pai Participant 1 LLC (Chillicothe, OH). 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 Margaret Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Margaret Mason was last updated on March 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.
# Margaret L. Mason · NPI 1033610746
Nurse Practitioner physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since February 27, 2018.
## Identity
- **NPI:** 1033610746 (Entity type: Individual)
- **Enumerated:** February 27, 2018
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** R238423 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 2525 W BELVEDERE AVE, Baltimore, MD 21215-5203
- **Phone:** (410) 367-9100
## 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): Mdics Rehabilitative Services LLC (NPI 1124313309, Glen Burnie, MD); Align Wellness Suite LLC (NPI 1710717483, Hughesville, MD); Universal Health Corporation (NPI 1407117625, Roanoke, VA); Pai Participant 1 LLC (NPI 1093371312, Chillicothe, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** March 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1033610746) · Data from the CMS NPPES public registry.