Crystal Chan
NPI 1629781703 · Physician Assistant · Oakley, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Chan is a Physician Assistant provider in Oakley, CA (NPI 1629781703).
Provider details
- NPI number
- 1629781703
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1310 Club DrVallejo, CA 94592-1187Phone: (707) 638-5809
Registry dates
- Enumerated
- 2023-01-03
- Last updated
- 2025-07-17
- Certified
- 2025-07-17
Frequently asked questions
- What is Crystal Chan's NPI number?
- Crystal Chan's National Provider Identifier (NPI) is 1629781703, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Chan's specialty?
- Crystal Chan is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Crystal Chan located?
- Crystal Chan's practice location on file with NPPES is 2021 Main St, Oakley, CA 94561-3302.
- What is Crystal Chan's phone number?
- The practice phone number listed in the NPPES registry for Crystal Chan is (925) 363-2000.
- Does Crystal Chan accept Medicare?
- Crystal Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Chan's NPI active?
- Yes — Crystal Chan's NPI (1629781703) is active in the NPPES registry as of the last update on 2025-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.