Doctor profile · Federal record
Dr. John Chang, MD
Nephrology Physician (CMS: Nephrology) · West Haven, CT
- NPI 1447279039
- Accepts Medicare
- MIPS 71.7 / 100 · 2023
- 27 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
950 Campbell Ave
West Haven, CT 065162770
(203) 932-5711
fax (203) 937-3474
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- January 14, 2015
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- Connecticut #041357
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1447279039. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
70
Distinct HCPCS
2
Medicare allowed
$6,340
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 44 | 22 | $103 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 26 | 14 | $70 |
In context: peer comparison
Among 1 peers in West Haven Nephrology Physician, average services per provider: 35. This provider delivers 2.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
97
Patients
11
Total drug cost
$5,541
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Midodrine Hcl | Generic | 29 | 0 | $3,828 |
| Amlodipine Besylate | Generic | 26 | 11 | $93 |
| Fludrocortisone Acetate | Generic | 16 | 0 | $219 |
| Doxazosin Mesylate | Generic | 15 | 0 | $264 |
| Clonidine | Generic | 11 | 0 | $1,138 |
Frequently asked questions
What is Dr. John Chang's medical specialty?
Dr. John Chang practices Nephrology Physician in West Haven, CT.
Where does Dr. John Chang practice?
Dr. John Chang practices at 950 Campbell Ave, West Haven, CT 065162770. Office phone: 2039325711.
What is Dr. John Chang's NPI?
Dr. John Chang's National Provider Identifier (NPI) is 1447279039, issued by NPPES.
Does Dr. John Chang accept Medicare assignment?
Yes. Dr. John Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Chang 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 99213). Source: CMS Medicare Physician & Other Practitioners file.