Quick answers
- Does Prerna Mewawalla accept Medicare assignment?
- Yes. Medicare's clinician data says Prerna Mewawalla 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 Prerna Mewawalla see?
- In 2024, CMS data shows 147 Original Medicare patients and 671 services for Prerna Mewawalla. This counts Original Medicare only and measures volume, not quality.
- What is Prerna Mewawalla's NPI number?
- 1689804510. 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 Prerna Mewawalla, 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 | 147 |
|---|---|
| Services billed to Medicare | 671 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)344 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)154 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)62 services
- Hospital discharge day management, more than 30 minutes (99239)35 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)18 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%
- Arthritis56%
- Chronic kidney disease45%
- Ischemic heart disease37%
- Heart failure37%
Hospitals where Prerna Mewawalla works
Medicare's Facility Affiliation Data lists Prerna Mewawalla 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.
- Ahn Wexford HospitalWexford, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390334
- Allegheny General HospitalPittsburgh, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390050
- Grove City Medical CenterGrove City, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390266
- Jefferson HospitalJefferson Hills, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390265
- West Penn HospitalPittsburgh, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390090
Practice locations
Addresses where Prerna Mewawalla is enrolled with Medicare (CMS data updated October 2, 2026).
- 320 E N AvePittsburgh, PA 15212
- 4800 Friendship AvePittsburgh, PA 15224
- 4815 Liberty AvePittsburgh, PA 15224
Group practices
Medicare enrollment lists Prerna Mewawalla as a member of this group (CMS data updated October 2, 2026).
- Allegheny Clinic2,389 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Pittsburgh
Clinicians with the same Medicare primary specialty in Pittsburgh, PA — not a recommendation.
Other clinicians in Allegheny Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 (19 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) | 1689804510 |
| 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