Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John P Hagen, MD

Individual provider Anesthesiology Physician · NPI 1376745414

Dr. John P Hagen, MD is an Anesthesiology in Saint Louis, Missouri. Graduated from Washington University School of Medicine in 2006, 20 years ago. Practices with Western Anesthesiology Associates Inc, a 254-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
20
Trained at
Washington University School of Medicine
Licensed in
MO
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1 Childrens Pl
Saint Louis, MO 63110-1002
Phone: (314) 454-6215
Fax: (314) 454-2296
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 2010005851 (MO)
Pediatric Anesthesiology Physician Taxonomy 207LP3000X · Licence 2010005851 (MO)

Record details

NPI number1376745414
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 1, 2007
Last updated in NPPESAugust 10, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2006 (20 years in practice)
Group practice Western Anesthesiology Associates Inc — 254 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Saint Louis