Joshua Chan, DO, MS
NPI 1689317588 · Internal Medicine Physician · Orange, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joshua Chan, DO, MS is a Internal Medicine Physician provider in Orange, CA (NPI 1689317588).
Provider details
- NPI number
- 1689317588
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO, MS
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A23348 (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
4 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
- 2022-04-18
- Last updated
- 2026-04-27
- Certified
- 2026-04-27
Frequently asked questions
- What is Joshua Chan's NPI number?
- Joshua Chan's National Provider Identifier (NPI) is 1689317588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joshua Chan's specialty?
- Joshua Chan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joshua Chan located?
- Joshua Chan's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Joshua Chan's phone number?
- The practice phone number listed in the NPPES registry for Joshua Chan is (714) 456-5691.
- Does Joshua Chan accept Medicare?
- Joshua Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joshua Chan's NPI active?
- Yes — Joshua Chan's NPI (1689317588) is active in the NPPES registry as of the last update on 2026-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.