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STEPHANIE ADDISON M.D.
NPI 1881816866
Pediatrics - Adolescent Medicine in Gaithersburg, MD

Active since May 02, 2007PECOS Enrolled
655 WATKINS MILL RD, GAITHERSBURG, MD 20879(240) 632-4300 Get Directions Write a Review

NPPES record last updated: June 11, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Stephanie Addison M.d. NPPES

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

STEPHANIE ADDISON M.D. (NPI 1881816866) is an individual adolescent medicine provider in Gaithersburg, Maryland, licensed in District Of Columbia (MD038714) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Washington.

NPPES Registry Identity

NPI1881816866
Entity TypeIndividualFemale
Primary Taxonomy2080A0000X
Provider Legal NameSTEPHANIE ADDISONCredential: M.D.
Location Address655 WATKINS MILL RDGaithersburg, MD 20879-3301
Mailing Address655 Watkins Mill RdGaithersburg, MD 20879-3301 · (240) 632-4300
Phone(240) 632-4300
Sole ProprietorNo
Enumeration DateMay 2, 2007
Last NPPES UpdateJune 11, 2021
NPPES CertifiedJune 11, 2021
✔ NPI 1881816866 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Adolescent MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080A0000X
License✔ Licensed in DC · MD038714
Definition
A pediatrician who specializes in adolescent medicine is a multi-disciplinary healthcare specialist trained in the unique physical, psychological and social characteristics of adolescents, their healthcare problems and needs.
Also ListedPediatricsTaxonomy 208000000X · License MT190203 (PA)
655 WATKINS MILL RD, Gaithersburg, MD 20879
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Secondary Practice Location 1

Location 1111 Michigan Ave NWWashington, DC 20010-2916 · Phone (202) 476-5000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stephanie Addison M.d. 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 Reassignment

Medicare enrollment records show Stephanie Addison reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
Same address
Health Maintenance Organization
655 WATKINS MILL RD
Gaithersburg, MD 20879
  • Reassigned Medicare billing, District of Columbia enrollment
  • 2,492 clinicians in this Medicare group
NPI 1831471713 (301) 258-7700

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. ESTHER SHINYOUNG SONG M.D.
Pediatrics
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4000
DR. VICTOR DAVID ELLIS III MD
Student in an Organized Health Care Education/Training Program
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4000
DR. PETER JAN BLUVAS JR. M.D.
Emergency Medicine
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (406) 324-2242
YOGESH PARUTHI
Pharmacist
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4155
ILYSSA KAREN HAAR RN, IBCLC, BSN
Registered Nurse (Lactation Consultant)
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4333
HAOBO ZHOU MD
General Acute Care Hospital
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4075
MR. SCOTT ERIC JACKSON RT(R)(CT)
Radiologic Technologist (Computed Tomography)
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4418
KATIE MARIE ESSER
Audiologist
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4000

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 Stephanie Addison's NPI number?

The NPI number for Stephanie Addison is 1881816866. It was assigned to this individual provider in the NPPES registry on May 2, 2007.

Where is Stephanie Addison located?

Stephanie Addison practices at 655 Watkins Mill Rd, Gaithersburg, MD 20879. The listed phone number is (240) 632-4300.

What is Stephanie Addison's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Adolescent Medicine, with taxonomy code 2080A0000X.

Is Stephanie Addison enrolled in Medicare?

Yes. Stephanie Addison is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stephanie Addison's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Addison reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Gaithersburg, MD). The 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 Stephanie Addison'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 Stephanie Addison was last updated on June 11, 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.