Heather Marie Mascio, D.O
NPI 1962633610ActiveIndividual· Internal Medicine, Nephrology· Chester, PA
Internal Medicine, Nephrology (D.O) in Chester, Pennsylvania, trained at Rowan University School of Osteopathic Medicine (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $670,069 for 2,287 claims, against $272,262 paid for services in 2024. Calliditas Therapeutics US Inc. was the largest of 8 companies reporting payments in 2025, $264.47 in all, mostly food and beverage.
Overview
| NPI | 1962633610 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O |
| Sole proprietor | Yes |
| NPI issued | Jul 29, 2009 |
| Last updated in NPPES | Sep 4, 2025 |
| Certified by provider | Sep 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 0S19327 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 680 |
|---|---|
| Services billed | 3,559 across 24 procedure codes |
| Paid by Medicare | $272,262 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,287 · 5,358 30-day fills |
|---|---|
| Patients | 373 |
| Total drug cost | $670,069 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Rowan University School of Osteopathic Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Clinical Renal Associates LLCPhiladelphia, PA · 33 clinicians
Hospital affiliations
- Bryn Mawr HospitalBryn Mawr, PA
- Chester County HospitalWest Chester, PA
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Main Line Hospital LankenauWynnewood, PA
- Riddle Memorial HospitalMedia, PA
Other facilities
- Davita Concord Township DialysisDialysis facility · Chadds Ford, PA
- Davita Riddle Dialysis CenterDialysis facility · Media, PA
- Fkc SwarthmoreDialysis facility · Swarthmore, PA
Industry payments (Open Payments)
- 2025$264.47 · 10 payments from 8 companies
- 2024$408.89 · 16 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Calliditas Therapeutics US Inc. | $66.26 | 2 |
| Novo Nordisk Inc | $54.85 | 2 |
| Scpharmaceuticals Inc. | $30.23 | 1 |
| Travere Therapeutics, Inc. | $28.50 | 1 |
| Novartis Pharmaceuticals Corporation | $26.29 | 1 |
What the 2025 payments were for
- Food and Beverage$264.47 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nephrologists in Chester
- 1740444710