MARLEEN MCKENZIE M.D.
NPI 1831221621
Anesthesiology in Columbia, MD
About Marleen Mckenzie M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARLEEN MCKENZIE M.D. (NPI 1831221621) is an individual anesthesiology provider in Columbia, Maryland, licensed in Maryland (D0055823) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Marleen Mckenzie M.d. 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 Marleen Mckenzie reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbia, MD 21045
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 86 clinicians in this Medicare group
Alexandria, VA 22306
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 634 clinicians in this Medicare group
La Plata, MD 20646
- Reassigned Medicare billing, Maryland enrollment
- 59 clinicians in this Medicare group
Perryville, MD 21903
- Reassigned Medicare billing, Maryland enrollment
- 512 clinicians in this Medicare group
Elkton, MD 21921
- 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.
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.
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.
Reported Quality Measures
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 Marleen Mckenzie's NPI number?
The NPI number for Marleen Mckenzie is 1831221621. It was assigned to this individual provider in the NPPES registry on March 9, 2007.
Where is Marleen Mckenzie located?
Marleen Mckenzie practices at 5228 Lightfoot Path, Columbia, MD 21044. The listed phone number is (410) 740-8133.
What is Marleen Mckenzie's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Marleen Mckenzie enrolled in Medicare?
Yes. Marleen Mckenzie 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 Marleen Mckenzie's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marleen Mckenzie reassigns Medicare benefits to 5 organizations: Columbia Outpatient Sedation LLC (Columbia, MD), Northstar Anesthesia Of Virginia, LLC (Alexandria, VA), Northstar Anesthesia Of Maryland LLC (La Plata, MD), Union Hospital Of Cecil County, Inc (Perryville, MD) and Apollo Medical Group Of Upper Bay 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 Marleen Mckenzie'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 Marleen Mckenzie was last updated on July 8, 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.
# Marleen Mckenzie, M.D. · NPI 1831221621
Anesthesiology physician in Columbia, Maryland. Individual provider, active in the CMS NPPES registry since March 9, 2007.
## Identity
- **NPI:** 1831221621 (Entity type: Individual)
- **Enumerated:** March 9, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** D0055823 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5228 LIGHTFOOT PATH, Columbia, MD 21044-1102
- **Phone:** (410) 740-8133 · **Fax:** (410) 740-0281
## 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): Columbia Outpatient Sedation LLC (NPI 1588921225, Columbia, MD); Northstar Anesthesia Of Virginia, LLC (NPI 1194488791, Alexandria, VA); Northstar Anesthesia Of Maryland LLC (NPI 1528747490, La Plata, MD); Union Hospital Of Cecil County, Inc (NPI 1639920648, Perryville, MD); Apollo Medical Group Of Upper Bay LLC (NPI 1114496759, Elkton, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1995
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare UPIN G96005; Medicare ID-Type Unspecified 003390A21
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Source: [NPI Profile](https://npiprofile.com/npi/1831221621) · Data from the CMS NPPES public registry.