Darren Blaine Lewis, M.D.
Family Medicine Physician · Lake Oswego, OR
Darren Blaine Lewis, M.D. is a family medicine physician with a practice address in Lake Oswego, Oregon, and NPI 1699847731, issued on Nov 14, 2006. Check the license (Oregon MD27845, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Darren Blaine Lewis
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD27845 OR
Self-reported in NPPES; status is on the state search - Practice location
- 4015 Mercantile Dr, Lake Oswego, OR 97035
- Phone
- (503) 216-1500
- Enumerated
- Nov 14, 2006
- Record last updated
- Jan 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (503) 216-1515
- Medicaid ID
- 218441 OR
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 4015 Mercantile Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Barbara Britsch, PA-CPhysician Assistant1699715227
- Mary Brown, FNPFamily Nurse Practitioner1285832360
- Ruth Fischer-Wright, MDFamily Medicine Physician1851322366
- Mark Jardini, MDFamily Medicine Physician1548370380
- Kristina Rashid, MDFamily Medicine Physician1417980335
- Caroline Schmitz, PA-CPhysician Assistant1508201161
Verify Darren Blaine Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD27845Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% more Medicare Part D claims than the average family medicine physician in 2024
4,843 Medicare Part D claims for 457 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 39 claims were for opioids.
Most prescribed
- Atorvastatin Calcium387 claims
- Lisinopril274 claims
- Losartan Potassium210 claims
- Amlodipine Besylate207 claims
- Levothyroxine Sodium196 claims
- Omeprazole157 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.
Darren Blaine Lewis among 2,847 family medicine physician records in Oregon
Darren Blaine Lewis, M.D. 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2021 · 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 Darren Blaine Lewis, M.D.'s NPI number?
Darren Blaine Lewis, M.D.'s National Provider Identifier (NPI) is 1699847731, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Darren Blaine Lewis, M.D. located?
The NPPES record lists a practice address at 4015 Mercantile Dr, Lake Oswego, OR, 97035. Phone: (503) 216-1500. Providers update this record themselves, so call before visiting.
How can I verify Darren Blaine Lewis, M.D.'s license?
NPPES lists Oregon license number MD27845, 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 Darren Blaine Lewis, M.D. prescribe under Medicare Part D?
In 2024, Darren Blaine Lewis, M.D. had 4,843 Medicare Part D claims for 457 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.