Mark Thomas, MD
Surgery Physician · Portland, OR
Mark Thomas, MD is a surgery physician with a practice address in Portland, Oregon, and NPI 1720229545, issued on Mar 9, 2009. Check the license (Oregon MD192179, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Thomas
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- MD192179 OR
Self-reported in NPPES; status is on the state search - Practice location
- 501 N Graham St Ste 555, Portland, OR 97227
- Phone
- (503) 288-7535
- Enumerated
- Mar 9, 2009
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (503) 288-7538
- Medicaid ID
- 500654902 OR
- Medicare enrollment
- Enrolled (PECOS I20190829002289); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 501 N Graham St Ste 555
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shelby DavisPhysician Assistant1528740438
- James Ellis, DOSurgery Physician1225691892
- Niknam Eshraghi, M.D.Surgery Physician1649364696
- Theresa McSherry, FNPFamily Nurse Practitioner1093169583
- Charles Mueller, M.D.Surgery Physician1952349177
Verify Mark Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD192179Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average surgery physician in 2024
104 Medicare Part D claims for 32 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Gabapentin18 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: $125.79
4 payments; by number, the most common kind was food and beverage; the largest payer was Integra LifeSciences Corporation. The 17,103 providers of this specialty with any payment received $3,513.80 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 2 group practices
- The Oregon Clinic, PCPortland, OR
- Vibra Physicians LLCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Surgery Physician providers in Oregon
There are 524 surgery physician records in Oregon.
Other surgery physician records in Oregon
- Pedro Abdala, MDStayton, OR1700415932
- Shaan Akhtar, M.D.Redmond, OR1790165876
- Shaghayegh Aliabadi, M.D.Portland, OR1083785562
- Julianne Allen, MDMedford, OR1467816363
- Carrie Allison, MDSalem, OR1548487184
- Steffan Anderson, M.D., PH.D.Florence, OR1336292549
- Taylor Anderson, MDPortland, OR1225614688
- John Antolik, MDOregon City, OR1417927351
- Stephen Archer, M.D.Bend, OR1699750307
- Benjamin Arndt, RNFASalem, OR1871156588
Common questions
What is Mark Thomas, MD's NPI number?
Mark Thomas, MD's National Provider Identifier (NPI) is 1720229545, issued on Mar 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Thomas, MD located?
The NPPES record lists a practice address at 501 N Graham St Ste 555, Portland, OR, 97227. Phone: (503) 288-7535. Providers update this record themselves, so call before visiting.
How can I verify Mark Thomas, MD's license?
NPPES lists Oregon license number MD192179, 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 Thomas, MD prescribe under Medicare Part D?
In 2024, Mark Thomas, MD had 104 Medicare Part D claims for 32 beneficiaries; the average among surgery physician prescribers was 147. 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.