Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mark Francis Mailhot, MD

Individual provider Internal Medicine Physician · NPI 1861534075

Mark Francis Mailhot, MD practises Internal Medicine in Portland, Oregon. Graduated from University of Pittsburgh School of Medicine in 1997, 29 years ago. Practices with Sea Mar Community Health Centers, a 236-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Oregon and Washington.

Years since qualifying
29
Trained at
University of Pittsburgh School of Medicine
Licensed in
OR, WA
In the registry since
2007
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

220 NE Weidler St
Portland, OR 97232-1121
Phone: (314) 888-5233
Fax: (619) 984-4301
Show map & directions

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

Additional practice locations (1)

  • 14434 Ambaum Blvd Sw Ste 5, Burien, WA 98166-1438 — (206) 812-6140

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD194698 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD.MD.00047492 (WA)

Record details

NPI number1861534075
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2007
Last updated in NPPESJune 30, 2026
Certification dateJune 30, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF PITTSBURGH SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Sea Mar Community Health Centers — 236 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 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 patients101
Services billed 502 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

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 $147 5 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.

Colleagues at Sea Mar Community Health Centers

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 236 clinicians in the practice; 12 are shown here.

Other providers in Portland