Doctor profile · Federal record
Dr. Ya Ju Chang, MD
Rheumatology Physician (CMS: Rheumatology) · Cardiovascular Disease Physician · New York, NY
- NPI 1801879119
- Accepts Medicare
- 35 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
41 Elizabeth Street, Suite 203
New York, NY 100134637
(212) 334-9591
fax (212) 334-9598
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- April 15, 2025
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- New York #207546
- Medicaid
- NY #01946758
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1801879119. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
890
Distinct HCPCS
7
Medicare allowed
$77,561
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 300 | 154 | $102 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 231 | 152 | $144 | |
36415 |
Insertion of needle into vein for collection of blood sample | 138 | 102 | $8 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 96 | 21 | $1 | |
20610 |
Aspiration and/or injection of fluid from large joint | 50 | 26 | $76 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 42 | 42 | $189 | |
96372 |
Injection of drug or substance under skin or into muscle | 33 | 20 | $16 |
In context: peer comparison
Among 52 peers in this city , average services per provider: 266. This provider delivers 3.3× the peer median.Open Payments
Industry payments received
All-time total
$3,010
Transactions
134
Manufacturers
14
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 34 | $719.80 | |
| Amgen Inc. | 20 | $446.80 | |
| PFIZER INC. | 23 | $401.06 | |
| GlaxoSmithKline, LLC. | 7 | $202.01 | |
| Novartis Pharmaceuticals Corporation | 7 | $180.71 | |
| GENZYME CORPORATION | 7 | $179.74 | |
| UCB, Inc. | 8 | $176.46 | |
| AstraZeneca Pharmaceuticals LP | 6 | $176.01 | |
| Lilly USA, LLC | 8 | $145.72 | |
| Aurinia Pharma U.S., Inc. | 1 | $131.25 | |
| E.R. Squibb & Sons, L.L.C. | 6 | $113.90 | |
| Genentech USA, Inc. | 4 | $85.90 | |
| Janssen Biotech, Inc. | 2 | $31.38 | |
| Sandoz Inc. | 1 | $19.46 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
13,984
Patients
2,603
Total drug cost
$608,311
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Generic | 3,114 | 454 | $100,924 |
| Gabapentin | Generic | 1,731 | 332 | $20,957 |
| Sulfasalazine | Generic | 1,552 | 221 | $25,229 |
| Prednisone | Generic | 1,371 | 325 | $10,287 |
| Methotrexate (Methotrexate Sodium) | Brand | 1,230 | 172 | $41,483 |
| Famotidine | Generic | 980 | 232 | $11,996 |
| Diclofenac Sodium | Generic | 862 | 260 | $26,965 |
| Leflunomide | Generic | 516 | 69 | $28,270 |
| Meloxicam | Generic | 444 | 154 | $2,009 |
| Colchicine | Generic | 400 | 61 | $21,323 |
Frequently asked questions
What is Dr. Ya Ju Chang's medical specialty?
Dr. Ya Ju Chang practices Rheumatology Physician in New York, NY.
Where does Dr. Ya Ju Chang practice?
Dr. Ya Ju Chang practices at 41 Elizabeth Street, New York, NY 100134637. Office phone: 2123349591.
What is Dr. Ya Ju Chang's NPI?
Dr. Ya Ju Chang's National Provider Identifier (NPI) is 1801879119, issued by NPPES.
Does Dr. Ya Ju Chang accept Medicare assignment?
Yes. Dr. Ya Ju Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ya Ju Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.