DR. MARY ELIZABETH MCALLISTER MD
NPI 1790723989
Anesthesiology in Annapolis, MD
About Dr. Mary Elizabeth Mcallister Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY ELIZABETH MCALLISTER MD (NPI 1790723989) is an individual anesthesiology provider in Annapolis, Maryland, licensed in Maryland (D0063798) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2001).
NPPES Registry Identity
Specialties & Licenses
Other Names 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 and accepts Medicare assignment
Dr. Mary Elizabeth Mcallister 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
5Medicare enrollment records show Mary Mcallister reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Annapolis, MD 21401
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 391 clinicians in this Medicare group
Annapolis, MD 21401
- Reassigned Medicare billing, Maryland enrollment
- 44 clinicians in this Medicare group
Bowie, MD 20715
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 56 clinicians in this Medicare group
Columbia, MD 21045
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 86 clinicians in this Medicare group
Prince Frederick, MD 20678
- Reassigned Medicare billing, Maryland enrollment
- 468 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 7
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.
Medicare 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.
ANNAPOLIS, MD 21401
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 Mary Mcallister's NPI number?
The NPI number for Mary Mcallister is 1790723989. It was assigned to this individual provider in the NPPES registry on June 2, 2006. The provider is also known as Mary Elizabeth Hyde MD.
Where is Mary Mcallister located?
Mary Mcallister practices at 700 Melvin Ave, Annapolis, MD 21401. The listed phone number is (410) 280-2260.
What is Mary Mcallister's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Mary Mcallister enrolled in Medicare?
Yes. Mary Mcallister 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 Mary Mcallister's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mcallister reassigns Medicare benefits to 5 organizations: Anesthesia Company, LLC (Annapolis, MD), Bestgate Anesthesia LLC (Annapolis, MD), Capital Care Anesthesia LLC (Bowie, MD), Columbia Outpatient Sedation LLC (Columbia, MD) and North American Partners In Anesthesia Maryland LLC (Prince Frederick, 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 Mary Mcallister'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 Mary Mcallister was last updated on September 16, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Dr. Mary Elizabeth Mcallister, MD · NPI 1790723989
Anesthesiology physician in Annapolis, Maryland. Individual provider, active in the CMS NPPES registry since June 2, 2006.
## Identity
- **NPI:** 1790723989 (Entity type: Individual)
- **Enumerated:** June 2, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** D0063798 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 700 MELVIN AVE, Annapolis, MD 21401-1514
- **Phone:** (410) 280-2260
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Anesthesia Company, LLC (NPI 1871548156, Annapolis, MD); Bestgate Anesthesia LLC (NPI 1568889327, Annapolis, MD); Capital Care Anesthesia LLC (NPI 1710110499, Bowie, MD); Columbia Outpatient Sedation LLC (NPI 1588921225, Columbia, MD); North American Partners In Anesthesia Maryland LLC (NPI 1093707879, Prince Frederick, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** September 16, 2009
- **Other identifiers:** Medicare PIN 298LO150 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1790723989) · Data from the CMS NPPES public registry.