Doctor profile · Federal record
Dr. Gregory Challener, MD
Rheumatology Physician (CMS: Rheumatology) · Boston, MA
- NPI 1659831865
- Accepts Medicare
- 7 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
55 Fruit St
Boston, MA 021142621
(412) 400-3003 - Additional location
-
200 1St St Sw
Rochester, MN 559050001
(507) 284-2511 - Mailing address
-
200 1St St Sw
Rochester, MN 559050001
Credentials & registration
- NPI registered
- March 2019 — 7 yrs on file
- Profile last updated
- October 18, 2022
- Year of graduation
- 2019 — 7 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Massachusetts #292803
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659831865. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$99
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, INC. | 1 | $99.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
259
Patients
34
Total drug cost
$236,878
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 98 | 34 | $1,117 |
| Actemra (Tocilizumab) | Brand | 33 | 0 | $145,837 |
| Methotrexate (Methotrexate Sodium) | Brand | 26 | 0 | $1,363 |
| Allopurinol | Generic | 19 | 0 | $810 |
| Actemra Actpen (Tocilizumab) | Brand | 17 | 0 | $83,781 |
| Hydroxychloroquine Sulfate | Generic | 16 | 0 | $327 |
| Azathioprine | Generic | 15 | 0 | $1,068 |
| Colchicine | Generic | 13 | 0 | $1,573 |
| Alendronate Sodium | Generic | 11 | 0 | $122 |
| Pregabalin | Generic | 11 | 0 | $880 |
Hospital affiliations
Frequently asked questions
What is Dr. Gregory Challener's medical specialty?
Dr. Gregory Challener practices Rheumatology Physician in Boston, MA.
Where does Dr. Gregory Challener practice?
Dr. Gregory Challener practices at 55 Fruit St, Boston, MA 021142621. Office phone: 4124003003.
What is Dr. Gregory Challener's NPI?
Dr. Gregory Challener's National Provider Identifier (NPI) is 1659831865, issued by NPPES.
Does Dr. Gregory Challener accept Medicare assignment?
Yes. Dr. Gregory Challener accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.