John Alexander Guardiola, MD
Student in an Organized Health Care Education/Training Program · Saint Louis, MO
John Alexander Guardiola, MD is a student in an organized health care education/training program with a practice address in Saint Louis, Missouri, and NPI 1821931403, issued on Apr 10, 2026. Check the license with the Missouri board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Alexander Guardiola
- Credential
- MD
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 12800 Corporate Hill Dr, Saint Louis, MO 63131
- Phone
- (314) 617-3751
- Enumerated
- Apr 10, 2026
- Record last updated
- Apr 10, 2026
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 3,622 in Missouri → Look up another NPI →
Also registered at 12800 Corporate Hill Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Olivia HiscoxAthletic Trainer1881482412
Verify John Alexander Guardiola in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Alexander Guardiola among 3,622 student in an organized health care education/training program records in Missouri
John Alexander Guardiola, MD is one of 3,622 student in an organized health care education/training program records with a practice address in Missouri. 22% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2026, is newer than 75% of them.
- NPI issued2026 · 75% of these records are older, 0% newer
- In a Medicare fileNo · 22% of these records are
- In the CMS Doctors and Clinicians fileNo · 2% of these records are
- Record last updated2026 · 13% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,338 student in an organized health care education/training program records list a practice address in Saint Louis
They are 1,338 of the 27,605 NPPES records with a practice address in Saint Louis, and 3,622 student in an organized health care education/training program records in Missouri. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,622 in Missouri → Every provider in Saint Louis → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Favour Akinjiyan, MD, PHDSaint Louis, MO 631311245032994
- Kourtney Benion, MDSaint Louis, MO 631311801698444
- Gianmarco Calderara, MDSt Louis, MO 631311962204321
- Isaac Che Ngang, MDSt Louis, MO 631311841091774
- Neejad Chidiac, MD, MBASaint Louis, MO 631311437909744
- Mahsa Dolatshahi, MDSaint Louis, MO 631311053113779
- Amy LiaoSaint Louis, MO 631311497554844
- Liam LockeSt Louis, MO 631311215739008
Common questions
What is John Alexander Guardiola, MD's NPI number?
John Alexander Guardiola, MD's National Provider Identifier (NPI) is 1821931403, issued on Apr 10, 2026. An NPI identifies a provider in billing; it is not a license.
Where is John Alexander Guardiola, MD located?
The NPPES record lists a practice address at 12800 Corporate Hill Dr, Saint Louis, MO, 63131. Phone: (314) 617-3751. Providers update this record themselves, so call before visiting.
How can I verify John Alexander Guardiola, MD's license?
Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.