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

Jason Alan Drennan, DO

Individual provider Anesthesiology Physician · NPI 1548572738

Jason Alan Drennan, DO practises Anesthesiology in Springfield, Missouri. Qualified in 2009, 17 years ago. Practices with Ozark Anesthesia Associates Inc, a 88-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
17
Licensed in
MO
In the registry since
2010
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

3801 S National Ave
Springfield, MO 65807-5210
Phone: (417) 269-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1600 Sw Archer Rd, Gainesville, FL 32610-3003 — (352) 265-0077

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 2013011933 (MO)

Record details

NPI number1548572738
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 5, 2010
Last updated in NPPESJuly 21, 2022

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Ozark Anesthesia Associates Inc — 88 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients240
Services billed 313 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Ozark Anesthesia Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 88 clinicians in the practice; 12 are shown here.

Other providers in Springfield