Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Johnny A. Chang, M.D.
Urology Physician in Middletown, CT · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619975182
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Registry record
Entity type Individual (Type 1)
Name Dr. Johnny A. Chang
Credential M.D.
Sex Male
Practice address 410 Saybrook Rd, Middletown, CT, 06457
Phone (860) 358-2270
Fax (860) 358-2275
Enumeration date Jul 8, 2005
Last updated in NPPES May 5, 2026
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0000231610801 | Other | CT | UNITED HEALTHCARE ID |
| 1411777 | Medicaid | CT | - |
| 3159551 | Other | CT | AETNA PROVIDER ID |
| 041177 | Other | CT | CONNECTICARE PROVIDER ID |
| 2V4421 | Other | CT | HEALTHNET PROVIDER ID |
| 00141177700 | Other | CT | BLUE CARE FAMILY PLAN ID |
| 010041177CT01 | Other | CT | BLUE SHIELD PROVIDER ID |
| P2882366 | Other | CT | OXFORD PROVIDER ID |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Johnny Chang?
Johnny Chang is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Martha Mccrann Physician Assistant · Middletown, CT NPI 1720069560 Michael Mcdonald Physician Assistant · Middletown, CT NPI 1265413793 Richard Whitehead Physician Assistant · Middletown, CT NPI 1487630919 Joseph Sohn Orthopaedic Surgery of the Spine Physician · Middletown, CT NPI 1225095425 Nadeem Hussain Gastroenterology Physician · Middletown, CT NPI 1548228596 Antonios Sapounas Gastroenterology Physician · Middletown, CT NPI 1922065036 Gregor Koobatian Gastroenterology Physician · Middletown, CT NPI 1609833730 Edmund Chung Gastroenterology Physician · Middletown, CT NPI 1306804323
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-05.