Quick answers
- Does Mary P. Zayas accept Medicare assignment?
- Yes. Medicare's clinician data says Mary P. Zayas 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 P. Zayas see?
- In 2024, CMS data shows 127 Original Medicare patients and 169 services for Mary P. Zayas. This counts Original Medicare only and measures volume, not quality.
- What is Mary P. Zayas's NPI number?
- 1811137870. 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 P. Zayas, 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 | 127 |
|---|---|
| Services billed to Medicare | 169 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)30 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)26 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)16 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)15 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 pressure75%
- High cholesterol75%
- Arthritis39%
- Ischemic heart disease33%
- Diabetes31%
- Depression30%
Hospitals where Mary P. Zayas works
Medicare's Facility Affiliation Data lists Mary P. Zayas at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Nathan Littauer HospitalGloversville, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330276
Practice locations
Addresses where Mary P. Zayas is enrolled with Medicare (CMS data updated October 2, 2026).
- 99 E State StGloversville, NY 12078 (518) 775‑4264
Group practices
Medicare enrollment lists Mary P. Zayas as a member of these groups (CMS data updated October 2, 2026).
- Nathan Littauer Hospital Association93 clinicians in the group
- Gloversville Physician Medicine Services PC25 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Gloversville
Clinicians with the same Medicare primary specialty in Gloversville, NY — not a recommendation.
Other clinicians in Nathan Littauer Hospital Association
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1993 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811137870 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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