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

Nathan Lee Granneman, MD

Individual provider Occupational Medicine Physician · NPI 1689960171

Nathan Lee Granneman, MD practises Emergency Medicine in Columbia, Missouri. Graduated from University of Missouri, Columbia School of Medicine in 2011, 15 years ago. Practices with Boone Physician Services LLC, a 240-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
15
Trained at
University of Missouri, Columbia School of Medicine
Licensed in
MO
In the registry since
2011
Specialties on file
2
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

401 N Keene St
Columbia, MO 65201-6625
Phone: (573) 876-1600
Fax: (573) 876-1606
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 601 W Business Loop 70 Ste 275, Columbia, MO 65203-2522 — (573) 874-0008

Specialties & licences

Occupational Medicine Physician (primary) Taxonomy 2083X0100X · Licence 2012023532 (MO)
Sports Medicine (Family Medicine) Physician Taxonomy 207QS0010X · Licence 2012023532 (MO)

Record details

NPI number1689960171
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2011
Last updated in NPPESJanuary 8, 2024
Certification dateJanuary 8, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesFAMILY PRACTICE, SPORTS MEDICINE
Medical schoolUNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Boone Physician Services Llc — 240 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 patients36
Services billed 52 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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $123 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Boone Hospital Center Hospital · Columbia, MO

Colleagues at Boone Physician Services LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 240 clinicians in the practice; 12 are shown here.

Other providers in Columbia