Ari Chaim Greis, DO
NPI 1831209105ActiveIndividual· Physical Medicine & Rehabilitation· Bryn Mawr, PA
Physical Medicine & Rehabilitation (DO) in Bryn Mawr, Pennsylvania, trained at Philadelphia College of Osteopathic Medicine (class of 2003). 408 Medicare patients in 2024, $122,228 paid; all of their 1,683 Part D prescriptions were generic. Vertex Pharmaceuticals Incorporated was the largest of 2 companies reporting payments in 2025, $40.82 in all, mostly food and beverage.
Overview
| NPI | 1831209105 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Aug 30, 2006 |
| Last updated in NPPES | May 9, 2024 |
| Certified by provider | May 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physical Medicine & Rehabilitation Primary | 208100000X | OS014246 | PA |
| Physical Medicine & Rehabilitation | 208100000X | 25MB09081300 | NJ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physical Medicine and Rehabilitation (NJ); Practitioner - Physical Medicine and Rehabilitation (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 408 |
|---|---|
| Services billed | 2,462 across 33 procedure codes |
| Paid by Medicare | $122,228 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,683 · 1,964 30-day fills |
|---|---|
| Patients | 390 |
| Total drug cost | $18,332 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Physical Medicine And Rehabilitation |
| Telehealth | Offers telehealth |
Medical groups
- Phoenix Rehabilitation and Health Services IncCranberry Twp, PA · 2,800 clinicians
- Reconstructive Orthopaedic Associates II LLCChalfont, PA · 281 clinicians
- Rehabclinics Spt IncChalfont, PA · 104 clinicians
Hospital affiliations
- Bryn Mawr HospitalBryn Mawr, PA
- Chester County HospitalWest Chester, PA
- Jefferson Einstein Montgomery HospitalEast Norriton, PA
- Main Line Hospital LankenauWynnewood, PA
- Riddle Memorial HospitalMedia, PA
Other facilities
- Bryn Mawr Rehabilitation HospitalInpatient rehabilitation facility · Malvern, PA
- Good Shepherd Penn PartnersLong-term care hospital · Philadelphia, PA
Industry payments (Open Payments)
- 2025$40.82 · 2 payments from 2 companies
- 2024$55.55 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $22.57 | 1 |
| Fidia Pharma USA Inc. | $18.25 | 1 |
What the 2025 payments were for
- Food and Beverage$40.82 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Physical Medicine & Rehabilitation providers in Bryn Mawr
- 1528098829
- 1790216000
- 1659493914
- 1073538971
- 1003050535
All Physical Medicine & Rehabilitation providers in Pennsylvania →