MICHAEL RAYNER LEEDOM MD
NPI 1003951823
Emergency Medicine in Baltimore, MD
About Michael Rayner Leedom Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL RAYNER LEEDOM MD (NPI 1003951823) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D68922) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Southeast Iowa Regional Medical Center, and is a graduate of Drexel University College Of Medicine (2006).
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
Michael Rayner Leedom Md 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
16Medicare enrollment records show Michael Leedom reassigns Medicare billing to 16 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- 234 clinicians in this Medicare group
Baltimore, MD 21202
- Reassigned Medicare billing, Maryland enrollment
- 66 clinicians in this Medicare group
Randallstown, MD 21133
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Emergency Medicine Associates P.A., P.C.
- 729 clinicians in this Medicare group
Bel Air, MD 21014
- Reassigned Medicare billing, Maryland enrollment
- 130 clinicians in this Medicare group
Frederick, MD 21701
- Reassigned Medicare billing, Maryland enrollment
- 91 clinicians in this Medicare group
Phoenixville, PA 19460
- Reassigned Medicare billing, Pennsylvania enrollment
- 529 clinicians in this Medicare group
Pottstown, PA 19465
- Reassigned Medicare billing, Pennsylvania enrollment
- 474 clinicians in this Medicare group
Philadelphia, PA 19131
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,205 clinicians in this Medicare group
Philadelphia, PA 19127
- Reassigned Medicare billing, Pennsylvania enrollment
- 176 clinicians in this Medicare group
Altoona, PA 16601
- Reassigned Medicare billing, Pennsylvania enrollment
- 291 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Southeast Iowa Regional Medical Center
Acute Care Hospitals · West Burlington, IAMercy Medical Center Inc
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21201 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 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
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 Michael Leedom's NPI number?
The NPI number for Michael Leedom is 1003951823. It was assigned to this individual provider in the NPPES registry on February 20, 2007.
Where is Michael Leedom located?
Michael Leedom practices at 22 S Greene St Emergency Dept, Baltimore, MD 21201. The listed phone number is (410) 328-8025.
What is Michael Leedom's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michael Leedom enrolled in Medicare?
Yes. Michael Leedom 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 Michael Leedom's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Leedom reassigns Medicare benefits to 16 organizations: University Of Maryland Emergency Medicine Associates, PA (Baltimore, MD), Emergency Physicians Spps (Baltimore, MD), Emergency Medicine Associates PA PC (Randallstown, MD), Upper Chesapeake Emergency Medicine Physicians, LLC (Bel Air, MD), Hospitalist Medicine Physicians Of Maryland-Frederick PC (Frederick, MD) and 11 more organizations, listed in the Medicare section above. 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 Michael Leedom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Leedom accept?
Health plans from Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Wellmark Health Plan of Iowa, Inc. list Michael Leedom 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.
Is Michael Leedom affiliated with any hospitals?
According to CMS data, Michael Leedom is affiliated with Southeast Iowa Regional Medical Center and Mercy Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Michael Leedom was last updated on February 11, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Michael Rayner Leedom, MD · NPI 1003951823
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since February 20, 2007.
## Identity
- **NPI:** 1003951823 (Entity type: Individual)
- **Enumerated:** February 20, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D68922 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 22 S GREENE ST, EMERGENCY DEPT, Baltimore, MD 21201-1544
- **Phone:** (410) 328-8025 · **Fax:** (410) 328-8028
## 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:** 16 organizations under Medicare reassignment (form CMS-855R): University Of Maryland Emergency Medicine Associates, PA (NPI 1144271743, Baltimore, MD); Emergency Physicians Spps (NPI 1760885958, Baltimore, MD); Emergency Medicine Associates PA PC (NPI 1043175375, Randallstown, MD); Upper Chesapeake Emergency Medicine Physicians, LLC (NPI 1285854026, Bel Air, MD); Hospitalist Medicine Physicians Of Maryland-Frederick PC (NPI 1093322257, Frederick, MD); and 11 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Drexel University College Of Medicine, class of 2006
## Record status
- **NPPES last updated:** February 11, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1003951823) · Data from the CMS NPPES public registry.