Doctor profile · Federal record
Dr. Diane Horowitz, M.D.
Rheumatology Physician (CMS: Rheumatology) · New Hyde Park, NY
- NPI 1275774101
- Accepts Medicare
- MIPS 85.0 / 100 · 2023
- 22 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2800 Marcus Ave
New Hyde Park, NY 110421008
(516) 708-2550
Credentials & registration
- NPI registered
- March 2009 — 17 yrs on file
- Profile last updated
- January 7, 2010
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- New York #246416
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275774101. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,984
Distinct HCPCS
10
Medicare allowed
$346,791
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J9312 |
Injection, rituximab, 10 mg | 2,650 | 13 | $80 | |
J0897 |
Injection, denosumab, 1 mg | 1,260 | 13 | $23 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 329 | 153 | $147 | |
96415 |
Administration of chemotherapy into vein, each additional hour | 109 | 20 | $34 | |
96374 |
Injection of drug or substance into vein | 96 | 29 | $45 | |
36415 |
Insertion of needle into vein for collection of blood sample | 89 | 23 | $8 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 86 | 57 | $209 | |
96413 |
Administration of chemotherapy into vein, 1 hour or less | 83 | 22 | $160 | |
96372 |
Injection of drug or substance under skin or into muscle | 68 | 21 | $17 | |
J2930 |
Injection, methylprednisolone sodium succinate, up to 125 mg | 60 | 23 | $5 |
In context: peer comparison
Among 5 peers in New Hyde Park Rheumatology Physician, average services per provider: 562. This provider delivers 8.9× the peer median.Open Payments
Industry payments received
All-time total
$3,731
Transactions
31
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 12 | $1,479.77 | |
| Pfizer INC. | 4 | $1,321.84 | |
| Janssen Scientific Affairs, LLC | 15 | $929.58 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,003
Patients
295
Total drug cost
$724,885
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Generic | 184 | 58 | $11,227 |
| Prednisone | Generic | 166 | 59 | $2,584 |
| Diclofenac Sodium | Generic | 99 | 31 | $12,450 |
| Methylprednisolone | Generic | 66 | 26 | $2,696 |
| Methotrexate (Methotrexate Sodium) | Brand | 64 | 19 | $2,967 |
| Leflunomide | Generic | 63 | 17 | $5,649 |
| Humira(Cf) Pen (Adalimumab) | Brand | 59 | 0 | $428,907 |
| Gabapentin | Generic | 55 | 19 | $1,066 |
| Allopurinol | Generic | 53 | 18 | $863 |
| Meloxicam | Generic | 51 | 25 | $285 |
Hospital affiliations
Frequently asked questions
What is Dr. Diane Horowitz's medical specialty?
Dr. Diane Horowitz practices Rheumatology Physician in New Hyde Park, NY.
Where does Dr. Diane Horowitz practice?
Dr. Diane Horowitz practices at 2800 Marcus Ave, New Hyde Park, NY 110421008. Office phone: 5167082550.
What is Dr. Diane Horowitz's NPI?
Dr. Diane Horowitz's National Provider Identifier (NPI) is 1275774101, issued by NPPES.
Does Dr. Diane Horowitz accept Medicare assignment?
Yes. Dr. Diane Horowitz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diane Horowitz commonly perform?
Top Medicare-reported procedures in 2023: Injection, rituximab, 10 mg (HCPCS J9312); Injection, denosumab, 1 mg (HCPCS J0897); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.