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GARY M. KUPFER
NPI 1346319969
Pediatrics - Pediatric Hematology-Oncology in Washington, DC

Active since November 07, 2006PECOS Enrolled
3800 RESERVOIR RD NW FL 1, WASHINGTON, DC 20007(202) 444-7599(202) 444-3713 Get Directions Write a Review

NPPES record last updated: April 21, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 21, 2021, Aug 12, 2020 (2 updates tracked since 2020).

About Gary M. Kupfer NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GARY M. KUPFER (NPI 1346319969) is an individual pediatric hematology-oncology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD048040) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Charlottesville.

NPPES Registry Identity

NPI1346319969
Entity TypeIndividualMale
Primary Taxonomy2080P0207X
Provider Legal NameGARY M. KUPFER
Location Address3800 RESERVOIR RD NW FL 1Washington, DC 20007-2113
Mailing Address3800 Reservoir Rd Nw Fl 1Washington, DC 20007-2113 · (202) 444-7599 · Fax (202) 444-3713
Phone(202) 444-7599
Fax(202) 444-3713
Sole ProprietorNo
Enumeration DateNovember 7, 2006
Last NPPES UpdateApril 21, 20212 updates tracked since enumeration
NPPES CertifiedApril 21, 2021
✔ NPI 1346319969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in DC · MD048040
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
Also ListedPediatricsTaxonomy 208000000X · License 0101058469 (VA)
3800 RESERVOIR RD NW FL 1, Washington, DC 20007
Open in Google Maps ↗

Secondary Practice Location 1

Location 1Lee StCharlottesville, VA 22908-0001 · Phone (434) 924-0000

Other Identifiers 1

Medicaid006728391VA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gary M. Kupfer is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Gary Kupfer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Medstar Medical Group II LLC
Same address
Critical Care Medicine
3800 RESERVOIR RD NW
Washington, DC 20007
  • Reassigned Medicare billing, District of Columbia enrollment
  • 3,530 clinicians in this Medicare group
NPI 1205562816 (703) 558-1403
Mgmc LLC
Same address
Psychiatry
3800 RESERVOIR RD NW
Washington, DC 20007
  • Reassigned Medicare billing, District of Columbia enrollment
  • 861 clinicians in this Medicare group
NPI 1316949654 (888) 896-1400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. HARRISON CAMPBELL THOMAS MD
Student in an Organized Health Care Education/Training Program
3800 RESERVOIR RD NW FL 1
WASHINGTON, DC 20007
District of Columbia (202) 444-7563
DR. TIMOTHY RICHARD DEKLOTZ MD
Otolaryngology
3800 RESERVOIR RD NW FL 1
WASHINGTON, DC 20007
District of Columbia (202) 444-8186

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 Gary Kupfer's NPI number?

The NPI number for Gary Kupfer is 1346319969. It was assigned to this individual provider in the NPPES registry on November 7, 2006.

Where is Gary Kupfer located?

Gary Kupfer practices at 3800 Reservoir Rd NW Fl 1, Washington, DC 20007. The listed phone number is (202) 444-7599.

What is Gary Kupfer's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Is Gary Kupfer enrolled in Medicare?

Yes. Gary Kupfer is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Gary Kupfer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Kupfer reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Mgmc LLC (Washington, DC). 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 Gary Kupfer'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 Gary Kupfer was last updated on April 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.