Frank Chao, MD
NPI 1033143227 · Family Medicine Physician · Carol Stream, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frank Chao, MD is a Family Medicine Physician provider in Carol Stream, IL (NPI 1033143227).
Provider details
- NPI number
- 1033143227
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036065145 (IL)
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
- 2006-07-11
- Last updated
- 2018-07-16
Frequently asked questions
- What is Frank Chao's NPI number?
- Frank Chao's National Provider Identifier (NPI) is 1033143227, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frank Chao's specialty?
- Frank Chao is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Frank Chao located?
- Frank Chao's practice location on file with NPPES is 630 E North Ave, Carol Stream, IL 60188.
- What is Frank Chao's phone number?
- The practice phone number listed in the NPPES registry for Frank Chao is (630) 458-5300.
- Does Frank Chao accept Medicare?
- Frank Chao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frank Chao's NPI active?
- Yes — Frank Chao's NPI (1033143227) is active in the NPPES registry as of the last update on 2018-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.