Mary Thomason, MD
Internal Medicine Physician · Tigard, OR
Mary Thomason, MD is an internal medicine physician with a practice address in Tigard, Oregon, and NPI 1427019322, issued on Mar 30, 2006. Check the license (Oregon MD27320, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mary Thomason
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD27320 OR
42607 WI
Self-reported in NPPES; status is on the state search - Practice location
- 12442 SW Scholls Ferry RD, Tigard, OR 97223
- Phone
- (503) 216-9200
- Enumerated
- Mar 30, 2006
- Record last updated
- Mar 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 34245500 WI
212980 OR - Medicare enrollment
- Enrolled (PECOS I20070615000586); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 1999
- 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 12442 SW Scholls Ferry RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandra Antonovic, M.D.Pediatrics Physician1184773319
- Evagelia Baros, DOInternal Medicine Physician1003019340
- Kathryn Carr, P.T.Physical Therapist1174724736
- Rebecca CrowderStudent in an Organized Health Care Education/Training Program1750256236
- Kirsten Crowley, MDPediatrics Physician1396838280
- Mary Dunlap, ANPAdult Health Nurse Practitioner1629002639
Verify Mary Thomason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD27320Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% more Medicare Part D claims than the average internal medicine physician in 2024
5,557 Medicare Part D claims for 365 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 340 claims were for opioids.
Most prescribed
- Atorvastatin Calcium361 claims
- Levothyroxine Sodium310 claims
- Lisinopril204 claims
- Losartan Potassium166 claims
- Omeprazole149 claims
- Hydrocodone-Acetaminophen136 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.
Bills Medicare through one group practice
- Providence Health And Services OregonTigard, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Thomason among 2,116 internal medicine physician records in Oregon
Mary Thomason, 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1999 · median 2008 among the 1,232 with a school on file
- Record last updated2021 · 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).
Internal Medicine Physician providers in Oregon
There are 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Tigard → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Evagelia Baros, DOTigard, OR 972231003019340
- Milton Blettel, MDTigard, OR 972231336208388
- Brian Burke, MDTigard, OR 972231790822625
- Samuel Fellin, DOTigard, OR 972231265463996
- Heidi Hagman, M.D.Tigard, OR 972231962489575
- Aileen Kim, MDTigard, OR 972231255360657
- Lawrence LangsdorfTigard, OR 972231639101439
- Daniel Mangum, DOTigard, OR 972231710055322
Common questions
What is Mary Thomason, MD's NPI number?
Mary Thomason, MD's National Provider Identifier (NPI) is 1427019322, issued on Mar 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Thomason, MD located?
The NPPES record lists a practice address at 12442 SW Scholls Ferry RD, Tigard, OR, 97223. Phone: (503) 216-9200. Providers update this record themselves, so call before visiting.
How can I verify Mary Thomason, MD's license?
NPPES lists Oregon license number MD27320, 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 Mary Thomason, MD prescribe under Medicare Part D?
In 2024, Mary Thomason, MD had 5,557 Medicare Part D claims for 365 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.