MS. MARGARET ANN BLAKE RN MSN CRNP
NPI 1346716958
Nurse Practitioner - Family in Baltimore, MD
About Ms. Margaret Ann Blake Rn Msn Crnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARGARET ANN BLAKE RN MSN CRNP (NPI 1346716958) is an individual family provider in Baltimore, Maryland, licensed in Maryland (R188838) and active in the NPI registry since October 2018. She is enrolled in Medicare PECOS, is affiliated with Medstar Union Memorial Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
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
Ms. Margaret Ann Blake Rn Msn Crnp 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
2Medicare enrollment records show Margaret Blake reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21218
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 482 clinicians in this Medicare group
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 3,530 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.
Medstar Union Memorial Hospital
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21218 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.
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
BALTIMORE, MD 21218
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 Blake's NPI number?
The NPI number for Margaret Blake is 1346716958. It was assigned to this individual provider in the NPPES registry on October 22, 2018.
Where is Margaret Blake located?
Margaret Blake practices at 201 E University Pkwy, Baltimore, MD 21218. The listed phone number is (703) 558-1403.
What is Margaret Blake's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Margaret Blake enrolled in Medicare?
Yes. Margaret Blake 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 Blake's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Blake reassigns Medicare benefits to 2 organizations: Medstar Medical Group Anesthesiology LLC (Baltimore, MD) and Medstar Medical Group II LLC (Baltimore, MD). 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 Blake's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Margaret Blake affiliated with any hospitals?
According to CMS data, Margaret Blake is affiliated with Medstar Union Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Margaret Blake was last updated on October 22, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Ms. Margaret Ann Blake, RN MSN CRNP · NPI 1346716958
Family physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since October 22, 2018.
## Identity
- **NPI:** 1346716958 (Entity type: Individual)
- **Enumerated:** October 22, 2018
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** R188838 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 201 E UNIVERSITY PKWY, Baltimore, MD 21218-2829
- **Phone:** (703) 558-1403
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group Anesthesiology LLC (NPI 1528578333, Baltimore, MD); Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** October 22, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1346716958) · Data from the CMS NPPES public registry.