Thomas Chang, M.D.
Thomas Chang, M.D. is a Plastic Surgery Physician in Yuma, AZ, registered under NPI 1689724254.
Getting there
The practice address on file is 2270 S RIDGEVIEW DR STE 201, Yuma, AZ 85364. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 78028 | AZ | Plastic Surgery Physician primary |
| MD057180L | PA | Plastic Surgery Physician |
| 0101231575 | VA | Plastic Surgery Physician |
| MD33131 | DC | Plastic Surgery Physician |
| D57780 | MD | Plastic Surgery Physician |
| 01093807A | IN | Plastic Surgery Physician |
Licences are recorded in 6 states: AZ, PA, VA, DC, MD, IN. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Plastic And Reconstructive Surgery
- PAC ID
- 0941356042
Enrolled in Medicare 4 times, across 4 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| District of Columbia | I20090915000198 | Practitioner - Plastic And Reconstructive Surgery |
| Maryland | I20210505000012 | Practitioner - Plastic And Reconstructive Surgery |
| Pennsylvania | I20250129000183 | Practitioner - Plastic And Reconstructive Surgery |
| Arizona | I20250811002546 | Practitioner - Plastic And Reconstructive Surgery |
Medicare enrolment is recorded as approved under the provider type Practitioner - Plastic And Reconstructive Surgery. There are 4 separate enrolment records across 4 states (DC, MD, PA, AZ). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 6 states
This provider holds licences in 6 states: Arizona, District of Columbia, Indiana, Maryland, Pennsylvania and Virginia. The practice address on file is in Yuma, AZ, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- 78028
- Specialty
- Plastic Surgery Physician
- Licence
- MD33131
- Specialty
- Plastic Surgery Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Plastic Surgery covers
A plastic surgeon deals with the repair, reconstruction or replacement of physical defects of form or function involving the skin, musculoskeletal system, craniomaxillofacial structures, hand, extremities, breast and trunk and external genitalia or cosmetic enhancement of these areas of the body. Cosmetic surgery is an essential component of plastic surgery. The plastic surgeon uses cosmetic surgical principles to both improve overall appearance and to optimize the outcome of reconstructive procedures. The surgeon uses aesthetic surgical principles not only to improve undesirable qualities of normal structures but in all reconstructive procedures as well. NUCC Health Care Provider Taxonomy, code 208200000X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 208200000X | Plastic Surgery Physician | 78028 | AZ | primary |
| 208200000X | Plastic Surgery Physician | MD057180L | PA | |
| 208200000X | Plastic Surgery Physician | 0101231575 | VA | |
| 208200000X | Plastic Surgery Physician | MD33131 | DC | |
| 208200000X | Plastic Surgery Physician | D57780 | MD | |
| 208200000X | Plastic Surgery Physician | 01093807A | IN |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1689724254 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 12, 2007 |
| Last updated | Aug 5, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
2270 S RIDGEVIEW DR STE 201 Yuma, AZ 85364 (928) 344-5055 |
| Mailing address |
2400 S AVENUE A Yuma, AZ 85364 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 8 | 9 | 7 | 2 | 4 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 7 | 9 | 5 | 2 | 8 | 2 | 1 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.