1. Home
  2. Directory
  3. District Of Columbia
  4. Washington
  5. Pediatrics
  6. NPI Profile

HA-YOUNG CHOI MD
NPI 1699066035
Pediatrics - Neonatal-Perinatal Medicine in Washington, DC

Active since April 20, 2011PECOS Enrolled
3800 RESERVOIR RD NW, DEPT OF PEDIATRICS,, WASHINGTON, DC 20007(202) 243-3400(202) 444-2961 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2022, Mar 17, 2018, Jul 10, 2017 (3 updates tracked since 2017).

About Ha-young Choi Md NPPES

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

HA-YOUNG CHOI MD (NPI 1699066035) is an individual neonatal-perinatal medicine provider in Washington, District Of Columbia, licensed in District Of Columbia (MD042532) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1699066035
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameHA-YOUNG CHOICredential: MD
Location Address3800 RESERVOIR RD NW, DEPT OF PEDIATRICS,Washington, DC 20007-2113
Mailing Address3800 Reservoir Rd Nw, Dept Of Pediatrics,Washington, DC 20007-2113 · (202) 243-3400 · Fax (202) 444-2961
Phone(202) 243-3400
Fax(202) 444-2961
Sole ProprietorYes
Enumeration DateApril 20, 2011
Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration
✔ NPI 1699066035 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
Licenses✔ Licensed in DC · MD042532✔ Licensed in MD · D0078604
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
3800 RESERVOIR RD NW, Washington, DC 20007
Open in Google Maps ↗

Secondary Practice Locations 2

Location 14200 Wisconsin Ave, NW, 4th FloorWashington, DC 20016 · Phone (202) 243-3400
Location 25255 Loughboro Rd NWWashington, DC 20016-2633 · Phone (202) 537-4000

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ha-young Choi Md 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 Ha-young Choi 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 20

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

DR. KAUSTUBH SUBHASH YADWADKAR M.D.
Radiology (Diagnostic Radiology)
3800 RESERVOIR RD NW, CG201
WASHINGTON, DC 20007
District of Columbia (304) 206-7595
FRED MO MD
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-8766
SEBLE YIRGA
Nurse Practitioner (Family)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-7265
ARLETTE THOMPSON-PILE
Physical Therapy Assistant
3800 RESERVOIR RD NW, PHYSICAL MEDICINE AND REHBAILITATION DEPARTMENT
WASHINGTON, DC 20007
District of Columbia (202) 444-3689
JENNA ELIZABETH HOROWITZ
Physician Assistant (Surgical)
3800 RESERVOIR RD NW, NEUROSURGERY DEPARTMENT
WASHINGTON, DC 20007
District of Columbia (202) 444-2000
HALEY SWANSON FOSTER M.D.
Radiology (Vascular & Interventional Radiology)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-5022
CLAIRE DALBY MD
Student in an Organized Health Care Education/Training Program
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-7106
MS. AMANDA JORDAN SUN PA-C
Physician Assistant
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (877) 772-6505

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 Ha-young Choi's NPI number?

The NPI number for Ha-young Choi is 1699066035. It was assigned to this individual provider in the NPPES registry on April 20, 2011.

Where is Ha-young Choi located?

Ha-young Choi practices at 3800 Reservoir Rd NW Dept Of Pediatrics,, Washington, DC 20007. The listed phone number is (202) 243-3400.

What is Ha-young Choi's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Ha-young Choi enrolled in Medicare?

Yes. Ha-young Choi is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ha-young Choi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ha-young Choi 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 Ha-young Choi'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 Ha-young Choi was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.