Tsuling Chang M.D. a Professional Corporation
NPI 1235368523 · Dermatology Physician · San Ramon, CA
Tsuling Chang M.D. a Professional Corporation is a Dermatology Physician organization in San Ramon, CA (NPI 1235368523).
Provider details
- NPI number
- 1235368523
- Entity type
- Organization
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- T Chang, President(925) 866-6680
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-08
- Last updated
- 2009-07-08
Frequently asked questions
- What is Tsuling Chang M.D. a Professional Corporation's NPI number?
- Tsuling Chang M.D. a Professional Corporation's National Provider Identifier (NPI) is 1235368523, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Tsuling Chang M.D. a Professional Corporation?
- Tsuling Chang M.D. a Professional Corporation is classified in the NPPES registry as Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Tsuling Chang M.D. a Professional Corporation located?
- Tsuling Chang M.D. a Professional Corporation's practice location on file with NPPES is 5601 Norris Canyon Rd, San Ramon, CA 94583-5407.
- What is Tsuling Chang M.D. a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for Tsuling Chang M.D. a Professional Corporation is (925) 866-6680.
- Who is the authorized official for Tsuling Chang M.D. a Professional Corporation?
- The authorized official listed on Tsuling Chang M.D. a Professional Corporation's NPPES record is T Chang, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Tsuling Chang M.D. a Professional Corporation's NPI active?
- Yes — Tsuling Chang M.D. a Professional Corporation's NPI (1235368523) is active in the NPPES registry as of the last update on 2009-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.