Leigh Chao, MD
Emergency Medicine Physician · Saint Louis, MO
Leigh Chao, MD is an emergency medicine physician with a practice address in Saint Louis, Missouri, and NPI 1922081348, issued on Nov 21, 2005. Check the license (Missouri 112947, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Leigh Chao
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 112947 MO
Self-reported in NPPES; status is on the state search - Practice location
- 11133 Dunn RD, Saint Louis, MO 63136
- Phone
- (314) 362-9123
- Enumerated
- Nov 21, 2005
- Entity
- Type 1 · individual
Also registered at 11133 Dunn RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Anah Ali, MDEmergency Medicine Physician1942597992
- Anna Arnold, PAPhysician Assistant1447882584
- Ola Bamimore, MDEmergency Medicine Physician1992947832
- Jenny Bao, MDEmergency Medicine Physician1275947095
Verify Leigh Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 112947Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
77% fewer Medicare Part D claims than the average emergency medicine physician in 2024
80 Medicare Part D claims for 65 beneficiaries, against an average of 355 among the 49,029 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
3 hospital and facility affiliations
- Memorial HospitalChester, IL · Acute Care Hospitals5 of 5 stars
- Alton-Griffin Emergency Group PCAlton, IL
- Washington University Community Specialists, LLCSaint Louis, MO
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
363 emergency medicine physician records list a Saint Louis practice address
They are 363 of the 27,605 NPPES records with a Saint Louis practice address, and 1,352 emergency medicine physician records in Missouri.
All 363 in Saint Louis → All 1,352 in Missouri → Every provider in Saint Louis →
Other emergency medicine physician records in Missouri
- Robert Abbott, M.D.Saint Charles, MO1144269267
- Nagla Abdelmalek, M.D.Saint Louis, MO1003847591
- Donald Ables, MDKansas City, MO1346222189
- Enyo Ablordeppey, MDSaint Louis, MO1548468200
- Allison Abma, DOBranson, MO1033613302
- Sean Abraham, D.O.Columbia, MO1326368994
- Lajon Addison, D.O.Columbia, MO1104871854
- Opeolu Adeoye, MDSaint Louis, MO1023120623
- Lukuman Afuwape, M.DKansas City, MO1639494412
- Faqir Ahmad, MDSaint Louis, MO1487684957
Common questions
What is Leigh Chao, MD's NPI number?
Leigh Chao, MD's National Provider Identifier (NPI) is 1922081348, issued on Nov 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Leigh Chao, MD located?
The NPPES record lists a practice address at 11133 Dunn RD, Saint Louis, MO, 63136. Phone: (314) 362-9123. Providers update this record themselves, so call before visiting.
How can I verify Leigh Chao, MD's license?
NPPES lists Missouri license number 112947, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leigh Chao, MD prescribe under Medicare Part D?
In 2024, Leigh Chao, MD had 80 Medicare Part D claims for 65 beneficiaries; the average among emergency medicine physician prescribers was 355. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.