LEEROY MARK CLARKE M.D.
NPI 1396786133
Anesthesiology in Cheverly, MD
About Leeroy Mark Clarke M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEEROY MARK CLARKE M.D. (NPI 1396786133) is an individual anesthesiology provider in Cheverly, Maryland, licensed in Maryland (D0056346) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Bayview Medical Center, and maintains a secondary practice location in Baltimore.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Leeroy Mark Clarke M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Leeroy Clarke reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bethesda, MD 20814
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Columbia, MD 21045
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 86 clinicians in this Medicare group
Columbia, MD 21046
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 717 clinicians in this Medicare group
Baltimore, MD 21229
- Reassigned Medicare billing, Maryland enrollment
- 64 clinicians in this Medicare group
Prince Frederick, MD 20678
- Reassigned Medicare billing, District of Columbia enrollment
- 196 clinicians in this Medicare group
Owings Mills, MD 21117
- Reassigned Medicare billing, Maryland enrollment
- 14 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Bayview Medical Center
Acute Care Hospitals · Baltimore, MDMedicare 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHEVERLY, MD 20785
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 Leeroy Clarke's NPI number?
The NPI number for Leeroy Clarke is 1396786133. It was assigned to this individual provider in the NPPES registry on June 10, 2006.
Where is Leeroy Clarke located?
Leeroy Clarke practices at 3001 Hospital Dr, Cheverly, MD 20785. The listed phone number is (301) 618-6100.
What is Leeroy Clarke's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Leeroy Clarke enrolled in Medicare?
Yes. Leeroy Clarke is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Leeroy Clarke's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leeroy Clarke reassigns Medicare benefits to 6 organizations: Johns Hopkins University (Bethesda, MD), Columbia Outpatient Sedation LLC (Columbia, MD), First Colonies Anesthesia Associates, LLC (Columbia, MD), St. Agnes Healthcare, Inc. (Baltimore, MD), North American Partners In Anesthesia Maryland LLC (Prince Frederick, MD) and 1 more organization, 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 Leeroy Clarke's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Leeroy Clarke affiliated with any hospitals?
According to CMS data, Leeroy Clarke is affiliated with Johns Hopkins Bayview Medical Center.
When was this NPI record last updated?
The NPPES record for Leeroy Clarke was last updated on April 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Leeroy Mark Clarke, M.D. · NPI 1396786133
Anesthesiology physician in Cheverly, Maryland. Individual provider, active in the CMS NPPES registry since June 10, 2006.
## Identity
- **NPI:** 1396786133 (Entity type: Individual)
- **Enumerated:** June 10, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** D0056346 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 3001 HOSPITAL DR, Cheverly, MD 20785-1189
- **Phone:** (301) 618-6100
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1578569240, Bethesda, MD); Columbia Outpatient Sedation LLC (NPI 1588921225, Columbia, MD); First Colonies Anesthesia Associates, LLC (NPI 1740218767, Columbia, MD); St. Agnes Healthcare, Inc. (NPI 1003079799, Baltimore, MD); North American Partners In Anesthesia Maryland LLC (NPI 1093707879, Prince Frederick, MD); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Howard University College Of Medicine, class of 1992
## Record status
- **NPPES last updated:** April 2, 2026
- **Other identifiers:** Medicaid 150201800 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1396786133) · Data from the CMS NPPES public registry.