1. Home
  2. Directory
  3. Maryland
  4. Silver Spring
  5. Pediatrics
  6. NPI Profile

GREGORY DOWNING M.D., D.O.
NPI 1285656454
Pediatrics - Neonatal-Perinatal Medicine in Silver Spring, MD

Active since July 24, 2006PECOS Enrolled
1500 FOREST GLEN RD, SILVER SPRING, MD 20910(240) 364-2510 Get Directions Write a Review

NPPES record last updated: December 14, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Gregory Downing M.d., D.o. NPPES

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

GREGORY DOWNING M.D., D.O. (NPI 1285656454) is an individual neonatal-perinatal medicine provider in Silver Spring, Maryland, licensed in Maryland (H45952) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285656454
Entity TypeIndividualMale
Primary Taxonomy2080N0001X
Provider Legal NameGREGORY DOWNINGCredential: M.D., D.O.
Location Address1500 FOREST GLEN RDSilver Spring, MD 20910-1483
Mailing AddressPo Box 5074Sioux Falls, SD 57117-5074
Phone(240) 364-2510
Sole ProprietorNo
Enumeration DateJuly 24, 2006
Last NPPES UpdateDecember 14, 2024
NPPES CertifiedDecember 14, 2024
✔ NPI 1285656454 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
Licenses✔ Licensed in MD · H45952✔ Licensed in ND · 21885
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.
Also ListedSpecialistTaxonomy 174400000X · License H45952 (MD)
1500 FOREST GLEN RD, Silver Spring, MD 20910
Open in Google Maps ↗

Other Identifiers 1

Medicaid115051100MD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Oscar Health, Sanford Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gregory Downing M.d., D.o. 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

3

Medicare enrollment records show Gregory Downing reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hospital Authority Of Valdosta And Lowndes County, Georgia
643 mi
General Acute Care Hospital
1221 E MCPHERSON AVE
Nashville, GA 31639
  • Reassigned Medicare billing, Georgia enrollment
  • 112 clinicians in this Medicare group
NPI 1063753689 (229) 543-7100
South Georgia Medical Center Inc
643 mi
Psychiatric Unit
1221 E MCPHERSON AVE
Nashville, GA 31639
  • Reassigned Medicare billing, Georgia enrollment
  • 118 clinicians in this Medicare group
NPI 1497521801 (229) 433-8600
Sanford Bismarck
1,313 mi
Multi-Specialty
565 S 7TH ST
Bismarck, ND 58504
  • Reassigned Medicare billing, North Dakota enrollment
  • 779 clinicians in this Medicare group
NPI 1811941172 (701) 323-5550

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.

JYOTSNA MAREEDU M.D.
Internal Medicine
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (301) 754-7000
DIMENSIONS HEALTHCARE ASSOCIATES INC
Obstetrics & Gynecology
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (301) 754-7000
JENNIFER LYNN MERTENS MSN, CRNP
Nurse Practitioner (Neonatal)
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (301) 754-4749
DR. ISHIOMA E OPIA-EDEMENYA DPT
Physical Therapist
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (301) 754-7000
DR. RICHARD NGUYEN M.D.
Emergency Medicine
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (301) 754-7000
MS. DEBORAH RYAN NP
Nurse Practitioner (Neonatal, Critical Care)
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (240) 364-2510
DEBORAH HENNEN PA
Physician Assistant (Surgical)
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (301) 754-7000
DR. AMY SAKULICH WOITACH D.O.
Internal Medicine
1500 FOREST GLEN RD
SILVER SPRING, MD 20910
Montgomery County (301) 754-7000

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 Gregory Downing's NPI number?

The NPI number for Gregory Downing is 1285656454. It was assigned to this individual provider in the NPPES registry on July 24, 2006.

Where is Gregory Downing located?

Gregory Downing practices at 1500 Forest Glen Rd, Silver Spring, MD 20910. The listed phone number is (240) 364-2510.

What is Gregory Downing's specialty?

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

Is Gregory Downing enrolled in Medicare?

Yes. Gregory Downing is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Gregory Downing's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Downing reassigns Medicare benefits to 3 organizations: Hospital Authority Of Valdosta And Lowndes County, Georgia (Nashville, GA), South Georgia Medical Center Inc (Nashville, GA) and Sanford Bismarck (Bismarck, ND). 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 Gregory Downing's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Downing accept?

Health plans from Blue Cross Blue Shield of North Dakota, Oscar Health, Sanford Health Plan and Select Health list Gregory Downing 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.

When was this NPI record last updated?

The NPPES record for Gregory Downing was last updated on December 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.