Doctor profile · Federal record
Dr. Charissa Chang, MD
Gastroenterology Physician (CMS: Gastroenterology) · New York, NY
- NPI 1649299686
- Accepts Medicare
- 27 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
5 East 98Th Street, Mount Sinai Hospital Liver Diseases
New York, NY 10029
(212) 241-0034
fax (212) 289-7738 - Mailing address
-
1 Gustave L Levy Pl, Box 1104
New York, NY 100296500
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- September 27, 2019
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New York #236171
- Medicaid
- NY #02758318
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649299686. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
334
Distinct HCPCS
4
Medicare allowed
$29,565
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 177 | 80 | $104 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 98 | 40 | $90 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 32 | 23 | $66 | |
36415 |
Insertion of needle into vein for collection of blood sample | 27 | 20 | $8 |
In context: peer comparison
Among 165 peers in this city , average services per provider: 69. This provider delivers 4.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,976
Patients
290
Total drug cost
$940,367
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Tacrolimus | Generic | 537 | 66 | $106,922 |
| Vemlidy (Tenofovir Alafenamide) | Brand | 284 | 38 | $477,029 |
| Ursodiol | Generic | 216 | 39 | $41,055 |
| Entecavir | Generic | 129 | 24 | $64,787 |
| Mycophenolate Mofetil | Generic | 111 | 16 | $7,723 |
| Omeprazole | Generic | 87 | 15 | $870 |
| Amlodipine Besylate | Generic | 83 | 16 | $474 |
| Furosemide | Generic | 79 | 15 | $315 |
| Pantoprazole Sodium | Generic | 77 | 18 | $752 |
| Prednisone | Generic | 73 | 14 | $437 |
Hospital affiliations
Frequently asked questions
What is Dr. Charissa Chang's medical specialty?
Dr. Charissa Chang practices Gastroenterology Physician in New York, NY.
Where does Dr. Charissa Chang practice?
Dr. Charissa Chang practices at 5 East 98Th Street, New York, NY 10029. Office phone: 2122410034.
What is Dr. Charissa Chang's NPI?
Dr. Charissa Chang's National Provider Identifier (NPI) is 1649299686, issued by NPPES.
Does Dr. Charissa Chang accept Medicare assignment?
Yes. Dr. Charissa Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charissa Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Established patient office or other outpatient visit (HCPCS 99212). Source: CMS Medicare Physician & Other Practitioners file.