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

Individual provider Internal Medicine Physician · NPI 1255691960

Michael Hemphill, MD is registered under Pulmonary Disease in Duncan, Oklahoma. Graduated from University of Oklahoma College of Medicine in 2012, 14 years ago. Practices with Hcc Duncan Inc, a 10-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
14
Trained at
University of Oklahoma College of Medicine
Licensed in
OK
In the registry since
2012
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

2515 N Whisenant Dr
Duncan, OK 73533-1585
Phone: (580) 251-6806
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 29191 (OK)
Internal Medicine Physician Taxonomy 207R00000X · Licence 29191 (OK)

Record details

NPI number1255691960
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 29, 2012
Last updated in NPPESMarch 20, 2023
Certification dateMarch 17, 2023

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice Hcc Duncan Inc — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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 patients490
Services billed 1,540 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.

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 $447 34 payments · 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. Those with a page here are linked.

Colleagues at Hcc Duncan Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10 clinicians in the practice; 8 are shown here.

Other providers in Duncan