WILLIAM GALLAGHER MD
NPI 1437187648
Family Medicine in Colmar Manor, MD
About William Gallagher Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM GALLAGHER MD (NPI 1437187648) is an individual family medicine provider in Colmar Manor, Maryland, licensed in Maryland (D47141) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Washington, and is a graduate of Temple University School Of Medicine (1993).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
William Gallagher 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 Reassignment
Medicare enrollment records show William Gallagher reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20722 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
COLMAR MANOR, MD 20722
COLMAR MANOR, MD 20722
COLMAR MANOR, MD 20722
COLMAR MANOR, MD 20722
COLMAR MANOR, MD 20722
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 William Gallagher's NPI number?
The NPI number for William Gallagher is 1437187648. It was assigned to this individual provider in the NPPES registry on June 28, 2006.
Where is William Gallagher located?
William Gallagher practices at 4151 Bladensburg Rd, Colmar Manor, MD 20722. The listed phone number is (301) 699-7700.
What is William Gallagher's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is William Gallagher enrolled in Medicare?
Yes. William Gallagher 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 organization bills Medicare for William Gallagher's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Gallagher reassigns Medicare benefits to Medstar Medical Group II LLC (Washington, DC). The 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 William Gallagher'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 William Gallagher was last updated on October 22, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# William Gallagher, MD · NPI 1437187648
Family Medicine physician in Colmar Manor, Maryland. Individual provider, active in the CMS NPPES registry since June 28, 2006.
## Identity
- **NPI:** 1437187648 (Entity type: Individual)
- **Enumerated:** June 28, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** D47141 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4151 BLADENSBURG RD, Colmar Manor, MD 20722-1928
- **Phone:** (301) 699-7700 · **Fax:** (301) 779-9001
## 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:** Medstar Medical Group II LLC (NPI 1023836137, Washington, DC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Temple University School Of Medicine, class of 1993
## Record status
- **NPPES last updated:** October 22, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1437187648) · Data from the CMS NPPES public registry.