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

Dr. Gary T Gillham, DO

Individual provider Ophthalmology Physician · NPI 1245386333

Dr. Gary T Gillham, DO practises Ophthalmology in Springfield, Missouri. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2003, 23 years ago. Practices with Mercy Clinic Springfield Communities, a 1,126-clinician group and accepts Medicare assignment. Licensed in Illinois and Missouri.

Years since qualifying
23
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
IL, MO
In the registry since
2007
Specialties on file
2
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

1229 E Seminole St Ste 420
Springfield, MO 65804-2227 Not confirmed with CMS for 11 years — call before visiting
Phone: (417) 820-9393
Fax: (417) 820-9725
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 2008023553 (MO)
Ophthalmology Physician Taxonomy 207W00000X · Licence 36122133 (IL)

Record details

NPI number1245386333
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJanuary 25, 2007
Last updated in NPPESJanuary 29, 2015

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 2003 (23 years in practice)
Group practice Mercy Clinic Springfield Communities — 1126 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Cataract surgery 244 times · 87th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients317
Services billed 1,115 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 Mercy Clinic Springfield Communities

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1126 clinicians in the practice; 12 are shown here.

Other providers in Springfield