Jessica Xiao, MD
NPI 1164008785 · Internal Medicine Physician · Antioch, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jessica Xiao, MD is a Internal Medicine Physician provider in Antioch, CA (NPI 1164008785).
Provider details
- NPI number
- 1164008785
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 185362 (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
5 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
- 2021-03-23
- Last updated
- 2024-09-16
- Certified
- 2024-09-09
Frequently asked questions
- What is Jessica Xiao's NPI number?
- Jessica Xiao's National Provider Identifier (NPI) is 1164008785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jessica Xiao's specialty?
- Jessica Xiao is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jessica Xiao located?
- Jessica Xiao's practice location on file with NPPES is 4501 Sand Creek Rd, Antioch, CA 94531-8687.
- What is Jessica Xiao's phone number?
- The practice phone number listed in the NPPES registry for Jessica Xiao is (925) 858-1579.
- Does Jessica Xiao accept Medicare?
- Jessica Xiao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jessica Xiao's NPI active?
- Yes — Jessica Xiao's NPI (1164008785) is active in the NPPES registry as of the last update on 2024-09-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.