Quick answers
- Does Riffat S. Mahmud accept Medicare assignment?
- Yes. Medicare's clinician data says Riffat S. Mahmud 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 Riffat S. Mahmud see?
- In 2024, CMS data shows 515 Original Medicare patients and 3,727 services for Riffat S. Mahmud. This counts Original Medicare only and measures volume, not quality.
- What is Riffat S. Mahmud's NPI number?
- 1780787028. 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 Riffat S. Mahmud, 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 | 515 |
|---|---|
| Services billed to Medicare | 3,727 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 80 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)1,710 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)1,087 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)271 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)178 services
- Hospital discharge day management, more than 30 minutes (99239)168 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%
- Arthritis75%
- Chronic kidney disease60%
- Anxiety53%
- Ischemic heart disease52%
Hospitals where Riffat S. Mahmud works
Medicare's Facility Affiliation Data lists Riffat S. Mahmud 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.
- WellSpan York HospitalYork, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390046
Practice locations
Addresses where Riffat S. Mahmud is enrolled with Medicare (CMS data updated October 2, 2026).
- 1850 Normandie DrYork, PA 17408 (717) 909‑4928
Specialties
- Internal Medicineprimary
Other internal medicine doctors in York
Clinicians with the same Medicare primary specialty in York, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1980 (46 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780787028 |
| 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