OrganizationActive
Andrew Y. Chao, Inc
NPI 1780802108 · Family Medicine Physician · Ballwin, MO
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(89/100 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
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.