Roger Chang, MD, PHD
NPI 1679035216 · Epilepsy Physician · Palo Alto, CA
Roger Chang, MD, PHD is a Epilepsy Physician provider in Palo Alto, CA (NPI 1679035216).
Provider details
- NPI number
- 1679035216
- Entity type
- Individual
- Primary specialty
- Epilepsy PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A186929 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$131 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1959 Ne Pacific StSeattle, WA 98195-0001Phone: (206) 598-3300
Registry dates
- Enumerated
- 2019-04-02
- Last updated
- 2024-07-04
- Certified
- 2024-07-04
Frequently asked questions
- What is Roger Chang's NPI number?
- Roger Chang's National Provider Identifier (NPI) is 1679035216, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Chang's specialty?
- Roger Chang is listed in the NPPES registry with a primary specialty of Epilepsy Physician (Allopathic & Osteopathic Physicians).
- Where is Roger Chang located?
- Roger Chang's practice location on file with NPPES is 300 Pasteur Dr, Palo Alto, CA 94304-2203.
- What is Roger Chang's phone number?
- The practice phone number listed in the NPPES registry for Roger Chang is (650) 723-4000.
- Is Roger Chang's NPI active?
- Yes — Roger Chang's NPI (1679035216) is active in the NPPES registry as of the last update on 2024-07-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.