Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Gregory J Macdonnell, DO

Individual provider Anesthesiology Physician · NPI 1396078242

Gregory J Macdonnell, DO practises Anesthesiology in Saint Charles, Missouri. Qualified in 2007, 19 years ago. Practices with Premier Anesthesia of Richland a Division of Premier Anesthesia, LLC, a 86-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
19
Licensed in
MO
In the registry since
2009
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

5 Glenview Dr
Saint Charles, MO 63304-7909 Not confirmed with CMS for 15 years — call before visiting
Phone: (636) 244-4666
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 2009017809 (MO)

Record details

NPI number1396078242
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedSeptember 10, 2009
Last updated in NPPESSeptember 13, 2011

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Premier Anesthesia Of Richland A Division Of Premier Anesthesia, Llc — 86 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients158
Services billed 231 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Premier Anesthesia of Richland a Division of Premier Anesthesia, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 86 clinicians in the practice; 12 are shown here.

Other providers in Saint Charles