Quick answers
- Does Sadia N. Ahmed accept Medicare assignment?
- Yes. Medicare's clinician data says Sadia N. Ahmed 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 Sadia N. Ahmed see?
- In 2024, CMS data shows 235 Original Medicare patients and 29,486 services for Sadia N. Ahmed. This counts Original Medicare only and measures volume, not quality.
- What is Sadia N. Ahmed's NPI number?
- 1558525881. 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 Sadia N. Ahmed, 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 | 235 |
|---|---|
| Services billed to Medicare | 29,486 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Injection, denosumab, 1 mg (J0897)840 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)314 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)135 services
- Injection, zoledronic acid, 1 mg (J3489)75 services
- Injection of drug or substance under skin or into muscle (96372)36 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%
- Arthritis75%
- High blood pressure70%
- Anxiety35%
- Ischemic heart disease31%
- Depression29%
Hospitals where Sadia N. Ahmed works
Medicare's Facility Affiliation Data lists Sadia N. Ahmed 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.
- Kaleida HealthBuffalo, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330005
- Kenmore Mercy HospitalKenmore, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330102
- Mount St. Mary's Hospital & Health CenterLewiston, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330188
- Sisters of Charity HospitalBuffalo, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330078
Practice locations
Addresses where Sadia N. Ahmed is enrolled with Medicare (CMS data updated October 2, 2026).
- 9 Limestone DrWilliamsville, NY 14221 (716) 626‑4200
Group practices
Medicare enrollment lists Sadia N. Ahmed as a member of this group (CMS data updated October 2, 2026).
- Ahmed and Ahmed Physicians PC7 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Williamsville
Clinicians with the same Medicare primary specialty in Williamsville, NY — not a recommendation.
Other clinicians in Ahmed and Ahmed Physicians PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1558525881 |
| 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