Regina S. Won, M.D.
Infectious Disease Physician · Gresham, OR
Regina S. Won, M.D. is an infectious disease physician with a practice address in Gresham, Oregon, and NPI 1619173085, issued on Jun 22, 2007. Check the license (Oregon MD161903, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Regina S. Won
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- MD161903 OR
MD60490733 WA
Self-reported in NPPES; status is on the state search - Practice location
- 24800 SE Stark St FL 3, Gresham, OR 97030
- Phone
- (503) 674-1122
- Enumerated
- Jun 22, 2007
- Record last updated
- May 15, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130927000726); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 127 in Oregon → Look up another NPI →
Also registered at 24800 SE Stark St FL 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathan Rogers, M.D., M.SC.Internal Medicine Physician1972738847
Verify Regina S. Won in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD161903Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average infectious disease physician in 2024
379 Medicare Part D claims for 70 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Biktarvy59 claims
- Cephalexin48 claims
- Amoxicillin30 claims
- Ceftriaxone19 claims
- Sulfamethoxazole-Trimethoprim18 claims
- Tivicay16 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 90.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Legacy Clinics LLCPortland, OR
- Legacy Salmon Creek HospitalVancouver, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Regina S. Won among 127 infectious disease physician records in Oregon
Regina S. Won, M.D. is one of 127 infectious disease physician records with a practice address in Oregon. 74% 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, 42% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2007 · median 2007 among the 88 with a school on file
- Record last updated2018 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Oregon
There are 127 infectious disease physician records in Oregon.
All 127 in Oregon → Every provider in Gresham → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Cami Hilsendager, MDClackamas, OR 970151164835658
- Gerald Hutfles, DOClackamas, OR 970151417449992
- Joseph Kane, M.D.Clackamas, OR 970151881607281
- Freda Kerman, M.D.Clackamas, OR 970151841203213
- Hien Nguyen, M.D.Clackamas, OR 970151659441699
- Keith Riley, M.D.Clackamas, OR 970151609983766
- Wesley Tang, DOClackamas, OR 970151427589373
- Robert Lusk, MDHillsboro, OR 971241649276239
Common questions
What is Regina S. Won, M.D.'s NPI number?
Regina S. Won, M.D.'s National Provider Identifier (NPI) is 1619173085, issued on Jun 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Regina S. Won, M.D. located?
The NPPES record lists a practice address at 24800 SE Stark St FL 3, Gresham, OR, 97030. Phone: (503) 674-1122. Providers update this record themselves, so call before visiting.
How can I verify Regina S. Won, M.D.'s license?
NPPES lists Oregon license number MD161903, 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 Regina S. Won, M.D. prescribe under Medicare Part D?
In 2024, Regina S. Won, M.D. had 379 Medicare Part D claims for 70 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Regina S. Won, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.