Patrick Chang, M.D.
NPI 1528130143 · Pediatric Hematology & Oncology Physician · Sunnyvale, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Chang, M.D. is a Pediatric Hematology & Oncology Physician provider in Sunnyvale, CA (NPI 1528130143).
Provider details
- NPI number
- 1528130143
- Entity type
- Individual
- Primary specialty
- Pediatric Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A83364 (CA)
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
19 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
- 2006-11-15
- Last updated
- 2014-12-10
Frequently asked questions
- What is Patrick Chang's NPI number?
- Patrick Chang's National Provider Identifier (NPI) is 1528130143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Chang's specialty?
- Patrick Chang is listed in the NPPES registry with a primary specialty of Pediatric Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Chang located?
- Patrick Chang's practice location on file with NPPES is 301 Old San Francisco Rd, Sunnyvale, CA 94086-6386.
- What is Patrick Chang's phone number?
- The practice phone number listed in the NPPES registry for Patrick Chang is (408) 730-4251.
- Does Patrick Chang accept Medicare?
- Patrick Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Chang's NPI active?
- Yes — Patrick Chang's NPI (1528130143) is active in the NPPES registry as of the last update on 2014-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.