Quick answers
- Does Alexander Ostrovsky accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander Ostrovsky 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 Alexander Ostrovsky see?
- In 2024, CMS data shows 540 Original Medicare patients and 141,397 services for Alexander Ostrovsky. This counts Original Medicare only and measures volume, not quality.
- What is Alexander Ostrovsky's NPI number?
- 1548310238. 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 Alexander Ostrovsky, 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 | 540 |
|---|---|
| Services billed to Medicare | 141,397 |
| Different services or procedures | 109 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, pembrolizumab, 1 mg (J9271)18,600 services
- Injection, darbepoetin alfa, 1 microgram (non-esrd use) (J0881)6,820 services
- Injection, fosaprepitant, 1 mg (J1453)6,750 services
- Injection, ferric derisomaltose, 10 mg (J1437)6,000 services
- Injection, eflapegrastim-xnst, 0.1 mg (J1449)5,544 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%
- Arthritis51%
- Ischemic heart disease49%
- Diabetes41%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)41%
Hospitals where Alexander Ostrovsky works
Medicare's Facility Affiliation Data lists Alexander Ostrovsky 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.
- Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
- St Mary Medical CenterLanghorne, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390258
Practice locations
Addresses where Alexander Ostrovsky is enrolled with Medicare (CMS data updated October 2, 2026).
- 1203 Langhorne Newtown Rd, Suite 135Langhorne, PA 19047 (215) 750‑5050
Group practices
Medicare enrollment lists Alexander Ostrovsky as a member of this group (CMS data updated October 2, 2026).
- Alliance Cancer Specialists P.C.43 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Langhorne
Clinicians with the same Medicare primary specialty in Langhorne, PA — not a recommendation.
Other clinicians in Alliance Cancer Specialists P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548310238 |
| 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