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

Dr. Jeffrey J Hallazgo, MD

Individual provider Internal Medicine Physician · NPI 1073538302

Dr. Jeffrey J Hallazgo, MD is an Emergency Medicine in Fenton, Missouri. Graduated from University of Missouri, Kansas City, School of Medicine in 1984, 42 years ago. Practices with Mercy Clinic East Communities, a 573-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
42
Trained at
University of Missouri, Kansas City, School of Medicine
Licensed in
MO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

714 Gravois Rd Ste 100
Fenton, MO 63026-7723
Phone: (636) 326-6100
Fax: (636) 326-6110
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 12680 Olive Blvd Ste 100, Creve Coeur, MO 63141-6322 — (314) 251-8900

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence R4G27 (MO)

Record details

NPI number1073538302
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 13, 2006
Last updated in NPPESMay 10, 2021
Certification dateMay 10, 2021

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF MISSOURI, KANSAS CITY, SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Mercy Clinic East Communities — 573 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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