MRS. COLLEEN ELIZABETH HOLLEY MD
NPI 1093014524
Emergency Medicine in Glen Burnie, MD
About Mrs. Colleen Elizabeth Holley Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. COLLEEN ELIZABETH HOLLEY MD (NPI 1093014524) is an individual emergency medicine provider in Glen Burnie, Maryland, licensed in Maryland (D77429) and active in the NPI registry since March 2011. She is enrolled in Medicare PECOS, is affiliated with University Of Md Baltimore Washington Medical Center, and is a graduate of Virginia Commonwealth University, School Of Medicine (2011).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 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
Mrs. Colleen Elizabeth Holley 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
3Medicare enrollment records show Colleen Holley reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glen Burnie, MD 21061
- Reassigned Medicare billing, Maryland enrollment
- 79 clinicians in this Medicare group
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- 234 clinicians in this Medicare group
Towson, MD 21204
- Reassigned Medicare billing, Maryland enrollment
- 25 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 6
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of MD Baltimore Washington Medical Center
Acute Care Hospitals · Glen Burnie, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21061 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.
GLEN BURNIE, MD 21061
GLEN BURNIE, MD 21061
GLEN BURNIE, MD 21061
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 Colleen Holley's NPI number?
The NPI number for Colleen Holley is 1093014524. It was assigned to this individual provider in the NPPES registry on March 23, 2011. The provider is also known as Dr. Colleen Elizabeth Holley MD.
Where is Colleen Holley located?
Colleen Holley practices at 301 Hospital Dr, Glen Burnie, MD 21061. The listed phone number is (410) 787-4313.
What is Colleen Holley's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Colleen Holley enrolled in Medicare?
Yes. Colleen Holley 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 Colleen Holley's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Colleen Holley reassigns Medicare benefits to 3 organizations: Baltimore Washington Emergency Physicians, Inc. (Glen Burnie, MD), University Of Maryland Emergency Medicine Associates, PA (Baltimore, MD) and Osler Drive Emergency Physcians Associates, P.A. (Towson, 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 Colleen Holley's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Colleen Holley affiliated with any hospitals?
According to CMS data, Colleen Holley is affiliated with University Of MD Baltimore Washington Medical Center.
When was this NPI record last updated?
The NPPES record for Colleen Holley was last updated on September 11, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mrs. Colleen Elizabeth Holley, MD · NPI 1093014524
Emergency Medicine physician in Glen Burnie, Maryland. Individual provider, active in the CMS NPPES registry since March 23, 2011.
## Identity
- **NPI:** 1093014524 (Entity type: Individual)
- **Enumerated:** March 23, 2011
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D77429 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 301 HOSPITAL DR, Glen Burnie, MD 21061-5803
- **Phone:** (410) 787-4313 · **Fax:** (419) 787-4305
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Baltimore Washington Emergency Physicians, Inc. (NPI 1215983853, Glen Burnie, MD); University Of Maryland Emergency Medicine Associates, PA (NPI 1790639086, Baltimore, MD); Osler Drive Emergency Physcians Associates, P.A. (NPI 1568421659, Towson, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Virginia Commonwealth University, School Of Medicine, class of 2011
## Record status
- **NPPES last updated:** September 11, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1093014524) · Data from the CMS NPPES public registry.