ALLISON MCCORMICK GREENLEAF NP
NPI 1164680583
Nurse Practitioner - Pediatrics in Washington, DC
About Allison Mccormick Greenleaf Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLISON MCCORMICK GREENLEAF NP (NPI 1164680583) is an individual pediatrics provider in Washington, District Of Columbia, licensed in District Of Columbia (RN63153) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Allison Mccormick Greenleaf Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Allison Greenleaf reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 861 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 264 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20007 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.
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
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 Allison Greenleaf's NPI number?
The NPI number for Allison Greenleaf is 1164680583. It was assigned to this individual provider in the NPPES registry on June 2, 2008.
Where is Allison Greenleaf located?
Allison Greenleaf practices at 3800 Reservoir Rd NW #m3400, Washington, DC 20007. The listed phone number is (202) 444-0329.
What is Allison Greenleaf's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Allison Greenleaf enrolled in Medicare?
Yes. Allison Greenleaf is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Allison Greenleaf's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allison Greenleaf reassigns Medicare benefits to 3 organizations: Medstar Medical Group II LLC (Washington, DC), Mgmc LLC (Washington, DC) and Washington Hospital Center Corp (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 Allison Greenleaf'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 Allison Greenleaf was last updated on June 2, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Allison Mccormick Greenleaf, NP · NPI 1164680583
Pediatrics physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since June 2, 2008.
## Identity
- **NPI:** 1164680583 (Entity type: Individual)
- **Enumerated:** June 2, 2008
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** RN63153 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3800 RESERVOIR RD NW, #M3400, Washington, DC 20007-2113
- **Phone:** (202) 444-0329 · **Fax:** (202) 444-7161
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Medstar Medical Group II LLC (NPI 1205562816, Washington, DC); Mgmc LLC (NPI 1316949654, Washington, DC); Washington Hospital Center Corp (NPI 1376627406, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 2, 2008
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Source: [NPI Profile](https://npiprofile.com/npi/1164680583) · Data from the CMS NPPES public registry.