Doctor profile · Federal record
Dr. Mara Horwitz, MD
Rheumatology Physician (CMS: Rheumatology) · Pediatric Rheumatology Physician · Student in an Organized Health Care Education/Training Program · Saint Louis, MO
- NPI 1649613332
- Accepts Medicare
- 13 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1225 S Grand Blvd
Saint Louis, MO 631041016
(314) 977-8833 - Mailing address
-
1402 S Grand Blvd Rm R213A
Saint Louis, MO 631041004
Credentials & registration
- NPI registered
- April 2013 — 13 yrs on file
- Profile last updated
- February 5, 2021
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Missouri #2016009340
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649613332. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$83
Transactions
4
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen INC. | 4 | $82.71 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
115
Patients
12
Total drug cost
$2,635
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 53 | 12 | $701 |
| Methotrexate (Methotrexate Sodium) | Brand | 31 | 0 | $1,085 |
| Hydroxychloroquine Sulfate | Generic | 18 | 0 | $751 |
| Allopurinol | Generic | 13 | 0 | $98 |
Frequently asked questions
What is Dr. Mara Horwitz's medical specialty?
Dr. Mara Horwitz practices Rheumatology Physician in Saint Louis, MO.
Where does Dr. Mara Horwitz practice?
Dr. Mara Horwitz practices at 1225 S Grand Blvd, Saint Louis, MO 631041016. Office phone: 3149778833.
What is Dr. Mara Horwitz's NPI?
Dr. Mara Horwitz's National Provider Identifier (NPI) is 1649613332, issued by NPPES.
Does Dr. Mara Horwitz accept Medicare assignment?
Yes. Dr. Mara Horwitz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.