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

Dr. Mark C Mason, MD

Individual provider Surgery Physician · NPI 1336124510

Dr. Mark C Mason, MD practises General Surgery in Medford, Oregon. Graduated from Michigan College of Medicine and Surgery in 2004, 22 years ago. Practices with Providence Health and Services Oregon, a 164-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
22
Trained at
Michigan College of Medicine and Surgery
Licensed in
OR
In the registry since
2005
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

1698 E McAndrews Rd Ste 160
Medford, OR 97504-5589
Phone: (541) 732-7874
Fax: (541) 732-7875
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence MD160445 (OR)

Record details

NPI number1336124510
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 12, 2005
Last updated in NPPESOctober 20, 2020
Certification dateOctober 20, 2020

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolMICHIGAN COLLEGE OF MEDICINE AND SURGERY
Graduated 2004 (22 years in practice)
Group practice Providence Health And Services Oregon — 164 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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.

Colonoscopy 206 times · 94th percentile
Hernia repair (minimally invasive) 25 times · 92nd percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 97 times · 76th percentile
Melanoma (skin cancer) excision 12 times · 66th percentile
Hernia repair - groin (open) 1–10 times
Removal of tissue 1–10 times
Skin biopsy 1–10 times

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 patients335
Services billed 687 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.

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 $176 3 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 Providence Health and Services Oregon

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 164 clinicians in the practice; 12 are shown here.

Other providers in Medford