Joyce Chen, MD
NPI 1518054873 · Internal Medicine Physician · Palo Alto, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joyce Chen, MD is a Internal Medicine Physician provider in Palo Alto, CA (NPI 1518054873).
Provider details
- NPI number
- 1518054873
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A81665 (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
- 2006-10-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joyce Chen's NPI number?
- Joyce Chen's National Provider Identifier (NPI) is 1518054873, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joyce Chen's specialty?
- Joyce Chen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joyce Chen located?
- Joyce Chen's practice location on file with NPPES is 3801 Miranda Ave, Palo Alto, CA 94304-1207.
- What is Joyce Chen's phone number?
- The practice phone number listed in the NPPES registry for Joyce Chen is (650) 493-5000.
- Does Joyce Chen accept Medicare?
- Joyce Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joyce Chen's NPI active?
- Yes — Joyce Chen's NPI (1518054873) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.