OrganizationActive
Andrew Y. Chao, Inc
NPI 1780802108 · Family Medicine Physician · Ballwin, MO
Andrew Y. Chao, Inc is a Family Medicine Physician organization in Ballwin, MO (NPI 1780802108).
Provider details
- NPI number
- 1780802108
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Dailing Chao, Office Superviser(636) 227-1511
- License
- R2A51 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
683 Big Bend Rd
Ballwin, MO 63021-7723
Phone: (636) 227-1511
Fax: (636) 227-2452
Street-level locationGet directions
Mailing address
683 Big Bend Rd
Ballwin, MO 63021-7723
Registry dates
- Enumerated
- 2007-04-23
- Last updated
- 2007-08-07
Frequently asked questions
- What is Andrew Y. Chao, Inc's NPI number?
- Andrew Y. Chao, Inc's National Provider Identifier (NPI) is 1780802108, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Andrew Y. Chao, Inc?
- Andrew Y. Chao, Inc is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Y. Chao, Inc located?
- Andrew Y. Chao, Inc's practice location on file with NPPES is 683 Big Bend Rd, Ballwin, MO 63021-7723.
- What is Andrew Y. Chao, Inc's phone number?
- The practice phone number listed in the NPPES registry for Andrew Y. Chao, Inc is (636) 227-1511.
- Who is the authorized official for Andrew Y. Chao, Inc?
- The authorized official listed on Andrew Y. Chao, Inc's NPPES record is Dailing Chao, Office Superviser. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Andrew Y. Chao, Inc's NPI active?
- Yes — Andrew Y. Chao, Inc's NPI (1780802108) is active in the NPPES registry as of the last update on 2007-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.