TERRANCE T CHANG MD INC
TERRANCE T CHANG MD INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1265502793, based in Roseville, CA. The organization lists 7 taxonomy classifications, with Allergy & Immunology Physician recorded as primary.
Getting there
The practice address on file is 8723 SIERRA COLLEGE BLVD SUITE 220, Roseville, CA 95661. 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 |
|---|---|---|
| G33580 | CA | Allergy Physician |
| G33580 | CA | Pediatrics Physician |
| G33580 | CA | Pediatric Clinical & Laboratory… |
| G33580 | CA | Developmental - Behavioral Pediatrics… |
| G33580 | CA | Clinical & Laboratory Immunology (Allergy… |
| G33580 | CA | Pediatric Allergy/Immunology Physician |
| G33580 | CA | Allergy & Immunology Physician primary |
This provider holds licence G33580 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Allergy & Immunology covers
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system. NUCC Health Care Provider Taxonomy, code 207K00000X
All registered taxonomy codes
This provider registers 7 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207KA0200X | Allergy Physician Allergy | G33580 | CA | |
| 208000000X | Pediatrics Physician | G33580 | CA | |
| 2080I0007X | Pediatric Clinical & Laboratory Immunology Physician Clinical & Laboratory Immunology | G33580 | CA | |
| 2080P0006X | Developmental - Behavioral Pediatrics Physician Developmental - Behavioral Pediatrics | G33580 | CA | |
| 207KI0005X | Clinical & Laboratory Immunology (Allergy & Immunology) Physician Clinical & Laboratory Immunology | G33580 | CA | |
| 2080P0201X | Pediatric Allergy/Immunology Physician Pediatric Allergy/Immunology | G33580 | CA | |
| 207K00000X | Allergy & Immunology Physician | G33580 | CA | primary |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1265502793 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Nov 9, 2006 |
| Last updated | Nov 4, 2015 |
| Status | Active |
| Practice address |
8723 SIERRA COLLEGE BLVD SUITE 220 Roseville, CA 95661 (916) 791-0797 |
| Mailing address |
4120 DOUGLAS BLVD # 112 Granite Bay, CA 95746 |
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 | 2 | 6 | 5 | 5 | 0 | 2 | 7 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 3 | 5 | 1 | 0 | 4 | 7 | 9 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
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.