Quick answers
- Does Mollie S. Hart accept Medicare assignment?
- Yes. Medicare's clinician data says Mollie S. Hart 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 Mollie S. Hart see?
- In 2024, CMS data shows 28 Original Medicare patients and 32 services for Mollie S. Hart. This counts Original Medicare only and measures volume, not quality.
- What is Mollie S. Hart's NPI number?
- 1649517541. 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 Mollie S. Hart, 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 | 28 |
|---|---|
| Services billed to Medicare | 32 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 60 |
Most frequent services
- Psychiatric diagnostic evaluation (90791)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 blood pressure71%
- High cholesterol68%
- Depression54%
- Anxiety54%
- Arthritis39%
Practice locations
Addresses where Mollie S. Hart is enrolled with Medicare (CMS data updated October 2, 2026).
- 1145 19th St NW, 311 Mmg at 19th Street NWWashington, DC 20036 (202) 429‑2401
Group practices
Medicare enrollment lists Mollie S. Hart as a member of this group (CMS data updated October 2, 2026).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
- Clinical Social Workerprimary
Find other clinicians: Clinical Social Worker, District of Columbia →
Other clinical social workers 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 | CSW |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649517541 |
| 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