Quick answers
- Does Mary F. Haynos accept Medicare assignment?
- Yes. Medicare's clinician data says Mary F. Haynos 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 Mary F. Haynos see?
- In 2024, CMS data shows 123 Original Medicare patients and 381 services for Mary F. Haynos. This counts Original Medicare only and measures volume, not quality.
- What is Mary F. Haynos's NPI number?
- 1154370377. 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 Mary F. Haynos, 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 | 123 |
|---|---|
| Services billed to Medicare | 381 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)117 services
- Telephone medical discussion with physician, 11-20 minutes (99442)73 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)42 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)39 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)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 pressure70%
- Arthritis40%
- Diabetes35%
- Depression25%
- Anxiety24%
Practice locations
Addresses where Mary F. Haynos is enrolled with Medicare (CMS data updated October 2, 2026).
- 12001 Ferrara AveSilver Spring, MD 20906 (301) 946‑6623
Group practices
Medicare enrollment lists Mary F. Haynos as a member of this group (CMS data updated October 2, 2026).
- Advanced Medical Care LLC4 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Silver Spring
Clinicians with the same Medicare primary specialty in Silver Spring, MD — not a recommendation.
Other clinicians in Advanced Medical Care LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1154370377 |
| 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