DR. JAMES MCQUISTON M.D.
NPI 1326071994
Emergency Medicine in Leonardtown, MD
About Dr. James Mcquiston M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES MCQUISTON M.D. (NPI 1326071994) is an individual emergency medicine provider in Leonardtown, Maryland, licensed in Maryland (D62796) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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)
Dr. James Mcquiston M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show James Mcquiston reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 251 clinicians in this Medicare group
Elkton, MD 21921
- Reassigned Medicare billing, District of Columbia enrollment
- 347 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20650 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 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LEONARDTOWN, MD 20650
LEONARDTOWN, MD 20650
LEONARDTOWN, MD 20650
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 James Mcquiston's NPI number?
The NPI number for James Mcquiston is 1326071994. It was assigned to this individual provider in the NPPES registry on July 8, 2006.
Where is James Mcquiston located?
James Mcquiston practices at 25500 Point Lookout Road, Leonardtown, MD 20650. The listed phone number is (301) 279-6550.
What is James Mcquiston's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is James Mcquiston enrolled in Medicare?
Yes. James Mcquiston is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for James Mcquiston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Mcquiston reassigns Medicare benefits to 2 organizations: Mep Health, LLC (Rockville, MD) and Usacs Integrated Acute Care Services Of Maryland, LLC (Elkton, 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 James Mcquiston'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 James Mcquiston was last updated on August 16, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.