Mark Francis Mailhot, MD
Internal Medicine Physician · Portland, OR
Mark Francis Mailhot, MD is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1861534075, issued on Feb 13, 2007. Check the license (Oregon MD194698, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Francis Mailhot
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD194698 OR
MD.MD.00047492 WA
Self-reported in NPPES; status is on the state search - Practice location
- 220 NE Weidler St, Portland, OR 97232
- Phone
- (314) 888-5233
- Enumerated
- Feb 13, 2007
- Record last updated
- Jun 30, 2026
- Fax
- (619) 984-4301
- Medicaid ID
- 8473431 WA
- Medicare enrollment
- Enrolled (PECOS I20191218001354); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 220 NE Weidler St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Francis Mailhot in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD194698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average internal medicine physician in 2024
3,463 Medicare Part D claims for 280 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 148 claims were for opioids.
Most prescribed
- Atorvastatin Calcium231 claims
- Levothyroxine Sodium164 claims
- Amlodipine Besylate156 claims
- Lisinopril100 claims
- Losartan Potassium100 claims
- Gabapentin75 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $597.41
26 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- MY Catholic Doctor PLLCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Francis Mailhot among 2,116 internal medicine physician records in Oregon
Mark Francis Mailhot, MD is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1997 · median 2008 among the 1,232 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jay Brown, MDPortland, OR 972321306874037
- Wiley Chan, MDPortland, OR 972321669588828
- Homer Chin, MDPortland, OR 972321376572537
- Katherine Dahlke, MDPortland, OR 972321598830812
- Bukhosi Dube, M.D.Portland, OR 972321619132891
- Sheila Jhansale, MDPortland, OR 972321922049030
- Christina Kemper, M.D.Portland, OR 972321427213230
- Samuel Loeb, M.D.Portland, OR 972321508091521
Common questions
What is Mark Francis Mailhot, MD's NPI number?
Mark Francis Mailhot, MD's National Provider Identifier (NPI) is 1861534075, issued on Feb 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Francis Mailhot, MD located?
The NPPES record lists a practice address at 220 NE Weidler St, Portland, OR, 97232. Phone: (314) 888-5233. Providers update this record themselves, so call before visiting.
How can I verify Mark Francis Mailhot, MD's license?
NPPES lists Oregon license number MD194698, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Francis Mailhot, MD prescribe under Medicare Part D?
In 2024, Mark Francis Mailhot, MD had 3,463 Medicare Part D claims for 280 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.