Doctor profile · Federal record
Dr. Mark Horowitz, MD
Internal Medicine Physician (CMS: Internal Medicine) · Rheumatology Physician · New York, NY
- NPI 1154490530
- Accepts Medicare
- MIPS 13.1 / 100 · 2023
- 43 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
21 East 90Th St
New York, NY 10128
(212) 860-3077
fax (212) 410-7410
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- September 11, 2025
- Year of graduation
- 1983 — 43 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- New York #1613581
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1154490530. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,321
Distinct HCPCS
10
Medicare allowed
$517,306
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 1,930 | 349 | $145 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 780 | 325 | $203 | |
36415 |
Insertion of needle into vein for collection of blood sample | 623 | 297 | $8 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 239 | 169 | $45 | |
93922 |
Ultrasound study of arm and leg arteries | 197 | 173 | $97 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 176 | 157 | $16 | |
G0008 |
Administration of influenza virus vaccine | 84 | 84 | $35 | |
90674 |
Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free | 82 | 82 | $33 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 77 | 77 | $250 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 59 | 12 | $133 |
In context: peer comparison
Among 559 peers in this city , average services per provider: 137. This provider delivers 32× the peer median.Open Payments
Industry payments received
All-time total
$1,456
Transactions
47
Manufacturers
14
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Amgen Inc. | 13 | $349.88 | |
| Janssen Biotech, Inc. | 7 | $315.71 | |
| Alexion Pharmaceuticals, Inc. | 1 | $134.55 | |
| Mallinckrodt Hospital Products Inc. | 4 | $120.42 | |
| Novartis Pharmaceuticals Corporation | 4 | $84.27 | |
| Kiniksa Pharmaceuticals International, plc | 3 | $78.66 | |
| AstraZeneca Pharmaceuticals LP | 3 | $71.72 | |
| GlaxoSmithKline, LLC. | 3 | $62.74 | |
| ABBVIE INC. | 2 | $56.51 | |
| E.R. Squibb & Sons, L.L.C. | 2 | $49.83 | |
| SCILEX PHARMACEUTICALS INC. | 2 | $46.86 | |
| GENZYME CORPORATION | 1 | $32.84 | |
| Lilly USA, LLC | 1 | $26.74 | |
| ANI Pharmaceuticals, Inc. | 1 | $24.99 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,365
Patients
443
Total drug cost
$18,359
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 227 | 64 | $3,122 |
| Levothyroxine Sodium | Generic | 214 | 55 | $3,436 |
| Prednisone | Generic | 121 | 32 | $1,807 |
| Azithromycin | Generic | 118 | 68 | $616 |
| Rosuvastatin Calcium | Generic | 95 | 32 | $2,314 |
| Amlodipine Besylate | Generic | 83 | 25 | $636 |
| Losartan Potassium | Generic | 78 | 23 | $1,353 |
| Zolpidem Tartrate | Generic | 67 | 22 | $480 |
| Simvastatin | Generic | 61 | 16 | $807 |
| Allopurinol | Generic | 56 | 19 | $946 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Horowitz's medical specialty?
Dr. Mark Horowitz practices Internal Medicine Physician in New York, NY.
Where does Dr. Mark Horowitz practice?
Dr. Mark Horowitz practices at 21 East 90Th St, New York, NY 10128. Office phone: 2128603077.
What is Dr. Mark Horowitz's NPI?
Dr. Mark Horowitz's National Provider Identifier (NPI) is 1154490530, issued by NPPES.
Does Dr. Mark Horowitz accept Medicare assignment?
Yes. Dr. Mark Horowitz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Horowitz commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.