Quick answers
- Does Gissel Sonnenbrot accept Medicare assignment?
- Yes. Medicare's clinician data says Gissel Sonnenbrot accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Gissel Sonnenbrot see?
- In 2024, CMS data shows 50 Original Medicare patients and 77 services for Gissel Sonnenbrot. This counts Original Medicare only and measures volume, not quality.
- What is Gissel Sonnenbrot's NPI number?
- 1710429618. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Gissel Sonnenbrot, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 50 |
|---|---|
| Services billed to Medicare | 77 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)23 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)20 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure68%
- Arthritis48%
- Osteoporosis30%
- Depression26%
- Ischemic heart disease24%
Practice locations
Addresses where Gissel Sonnenbrot is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
- 18101 Prince Philip DrOlney, MD 20832 (301) 570‑7404
- 18105 Prince Philip DrOlney, MD 20832 (301) 774‑8962
- 2415 Musgrove RdSilver, MD 20904 (301) 384‑4788
- 6410 Rockledge DrBethesda, MD 20817
Group practices
Medicare enrollment lists Gissel Sonnenbrot as a member of these groups (CMS data updated October 2, 2026).
- MedStar Medical Group II LLC3,767 clinicians in the group
- Suburban/Nrh Medical Rehabilitation Inc941 clinicians in the group
Specialties
- Nurse Practitionerprimary
Find other clinicians: Nurse Practitioner, District of Columbia →
Other nurse practitioners in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Other clinicians in MedStar Medical Group II LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1710429618 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians