Ren Shirai, DO
Family Medicine Physician · Lake Oswego, OR
Ren Shirai, DO is a family medicine physician with a practice address in Lake Oswego, Oregon, and NPI 1356036677, issued on Apr 11, 2023. Check the license (Oregon DO228672, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ren Shirai
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- DO228672 OR
Self-reported in NPPES; status is on the state search - Practice location
- 18010 SW Mcewan RD, Lake Oswego, OR 97035
- Phone
- (503) 525-7500
- Enumerated
- Apr 11, 2023
- Record last updated
- Aug 5, 2026
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 18010 SW Mcewan RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nancy Heisel, MDInternal Medicine Physician1134274129
- Tanell Ogbeide, C.F.N.P.Nurse Practitioner1609108687
- Jordan Smith, M.D.Internal Medicine Physician1336345263
Verify Ren Shirai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license DO228672Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
187 Medicare Part D claims for 46 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Ren Shirai among 2,847 family medicine physician records in Oregon
Ren Shirai, DO is one of 2,847 family medicine physician records with a practice address in Oregon. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 96% of them.
- NPI issued2023 · 96% of these records are older, 3% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 family medicine physician records list a practice address in Lake Oswego
They are 24 of the 1,377 NPPES records with a practice address in Lake Oswego, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Lake Oswego → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Daniel Ananyev, D.O.Lake Oswego, OR 970351255678439
- Marion Darling, MDLake Oswego, OR 970351558366989
- Cynthia Dumler, M.D.Lake Oswego, OR 970351851342489
- Ruth Fischer-Wright, MDLake Oswego, OR 970351851322366
- Laura Gaff, M.D.Lake Oswego, OR 970351033401906
- Walter Hardin, D.O.Lake Oswego, OR 970351104841642
- Christopher Hatlestad, MDLake Oswego, OR 970351922027770
- Fernanda Huang, M.D.Lake Oswego, OR 970351861756470
Common questions
What is Ren Shirai, DO's NPI number?
Ren Shirai, DO's National Provider Identifier (NPI) is 1356036677, issued on Apr 11, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Ren Shirai, DO located?
The NPPES record lists a practice address at 18010 SW Mcewan RD, Lake Oswego, OR, 97035. Phone: (503) 525-7500. Providers update this record themselves, so call before visiting.
How can I verify Ren Shirai, DO's license?
NPPES lists Oregon license number DO228672, 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 Ren Shirai, DO prescribe under Medicare Part D?
In 2024, Ren Shirai, DO had 187 Medicare Part D claims for 46 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.