What is Margaret Mason's NPI number?

Margaret Mason's National Provider Identifier (NPI) is 1033610746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Margaret Mason's specialty?

Margaret Mason is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Margaret Mason located?

Margaret Mason's practice location on file with NPPES is 2525 W Belvedere Ave, Baltimore, MD 21215-5203.

What is Margaret Mason's phone number?

The practice phone number listed in the NPPES registry for Margaret Mason is (410) 367-9100.

Does Margaret Mason accept Medicare?

Margaret Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Margaret Mason's NPI active?

Yes — Margaret Mason's NPI (1033610746) is active in the NPPES registry as of the last update on 2026-03-12.

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Margaret Mason

NPI 1033610746 · Nurse Practitioner · Baltimore, MD

Margaret Mason is a Nurse Practitioner provider in Baltimore, MD (NPI 1033610746).

Provider details

NPI number: 1033610746
Entity type: Individual
Primary specialty: Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Sex: Female
Sole proprietor: No
License: 3012124 (KY)

Practice location

2525 W Belvedere Ave

Baltimore, MD 21215-5203

Phone: (410) 367-9100

Street-level locationGet directions

More MD providers

Mailing address

8301 Old Leonardtown Rd

Hughesville, MD 20637-3154

Specialties & taxonomies

Nurse PractitionerPrimary363L00000XLicense R238423 (MD)
Physician Assistants & Advanced Practice Nursing Providers
Nurse Practitioner363L00000XLicense 3012124 (KY)
Physician Assistants & Advanced Practice Nursing Providers
Gerontology Nurse Practitioner363LG0600XLicense 0024177540 (VA)
Physician Assistants & Advanced Practice Nursing Providers

Additional practice locations (1)

4200 Gardiner View Ave Ste 101
Louisville, KY 40213-1877
Phone: (502) 456-0494
Fax: (502) 456-0496

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(74/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
8 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
2 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.

Drug	Part D claims (2024)
Potassium Chloride	43
Mirtazapine	33
Dronedarone Hclbrand: Multaq	26
Gabapentin	20
Lisinopril	20
Allopurinol	19
Furosemide	17
Atorvastatin Calcium	17
Divalproex Sodium	13
Methocarbamol	12

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2018-02-27
Last updated: 2026-03-12
Certified: 2026-03-12

Frequently asked questions

What is Margaret Mason's NPI number?: Margaret Mason's National Provider Identifier (NPI) is 1033610746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Margaret Mason's specialty?: Margaret Mason is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Margaret Mason located?: Margaret Mason's practice location on file with NPPES is 2525 W Belvedere Ave, Baltimore, MD 21215-5203.
What is Margaret Mason's phone number?: The practice phone number listed in the NPPES registry for Margaret Mason is (410) 367-9100.
Does Margaret Mason accept Medicare?: Margaret Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Margaret Mason's NPI active?: Yes — Margaret Mason's NPI (1033610746) is active in the NPPES registry as of the last update on 2026-03-12.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider prescribes (Medicare Part D)

Frequently asked questions