DR. CHRISTOPHER M GALLAGHER M.D.
NPI 1467430579
Internal Medicine - Hematology & Oncology in Washington, DC
About Dr. Christopher M Gallagher M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTOPHER M GALLAGHER M.D. (NPI 1467430579) is an individual hematology & oncology provider in Washington, District Of Columbia, licensed in Virginia (0101052887) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Tidalhealth Peninsula Regional, Inc, and is a graduate of Georgetown University School Of Medicine (1994).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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. Christopher M Gallagher 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
4Medicare enrollment records show Christopher Gallagher reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Whc Physician Group LLC
- 613 clinicians in this Medicare group
Seaford, DE 19973
- Reassigned Medicare billing, Delaware enrollment
- 179 clinicians in this Medicare group
Salisbury, MD 21801
- Reassigned Medicare billing, Maryland enrollment
- 531 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Tidalhealth Peninsula Regional, Inc
Acute Care Hospitals · Salisbury, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20307 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.
WASHINGTON, DC 20307
WASHINGTON, DC 20307
WASHINGTON, DC 20307
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 Christopher Gallagher's NPI number?
The NPI number for Christopher Gallagher is 1467430579. It was assigned to this individual provider in the NPPES registry on January 9, 2006.
Where is Christopher Gallagher located?
Christopher Gallagher practices at 6900 Georgia Ave NW Hematology-Oncology Service, Bldg 2. Ward 78, Washington, DC 20307. The listed phone number is (202) 782-4350.
What is Christopher Gallagher's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Christopher Gallagher enrolled in Medicare?
Yes. Christopher 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 organizations bill Medicare for Christopher Gallagher's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Gallagher reassigns Medicare benefits to 4 organizations: Medstar Medical Group II LLC (Washington, DC), Whc Emerg Phys (Washington, DC), Tidalhealth Physician Network, Inc. (Seaford, DE) and Tidalhealth Specialty Care, LLC (Salisbury, 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 Christopher Gallagher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christopher Gallagher accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next and 1 other insurer list Christopher Gallagher as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Christopher Gallagher affiliated with any hospitals?
According to CMS data, Christopher Gallagher is affiliated with Tidalhealth Peninsula Regional, Inc.
When was this NPI record last updated?
The NPPES record for Christopher Gallagher was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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. Christopher M Gallagher, M.D. · NPI 1467430579
Hematology & Oncology physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since January 9, 2006.
## Identity
- **NPI:** 1467430579 (Entity type: Individual)
- **Enumerated:** January 9, 2006
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** 0101052887 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 6900 GEORGIA AVE NW, HEMATOLOGY-ONCOLOGY SERVICE, BLDG 2. WARD 78, Washington, DC 20307-0003
- **Phone:** (202) 782-4350 · **Fax:** (202) 782-3256
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1023836137, Washington, DC); Whc Emerg Phys (NPI 1306260625, Washington, DC); Tidalhealth Physician Network, Inc. (NPI 1467534636, Seaford, DE); Tidalhealth Specialty Care, LLC (NPI 1619504735, Salisbury, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 1994
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1467430579) · Data from the CMS NPPES public registry.