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

Dr. Alexander Gayle Parker, MD

Individual provider Emergency Medicine Physician · NPI 1689177743

Dr. Alexander Gayle Parker, MD is an Emergency Medicine in Festus, Missouri. Qualified in 2020, 6 years ago. Practices with Mercy Hospital Jefferson, an 11-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
6
Licensed in
MO
In the registry since
2018
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

1400 US Highway 61
Festus, MO 63028-4100
Phone: (636) 933-1000
Show map & directions

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

Additional practice locations (2)

  • 500 S Preston St Rm 305, Louisville, KY 40202-1702 — (502) 852-8696
  • 400 S Kingshighway Blvd, Saint Louis, MO 63110-1014 — (314) 362-9123

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 2021047265 (MO)

Record details

NPI number1689177743
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 15, 2018
Last updated in NPPESJune 13, 2024
Certification dateJune 13, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Mercy Hospital Jefferson — 11 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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