David Eric Sax, MD
Internal Medicine Physician · Portland, OR
David Eric Sax, MD is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1427141548, issued on Oct 2, 2006. Check the license (Oregon OR MD22315, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- David Eric Sax
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OR MD22315 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3550 N Interstate Ave, Portland, OR 97227
- Phone
- (503) 331-5220
- Enumerated
- Oct 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191212000557); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 3550 N Interstate Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Eric Sax in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license OR MD22315Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
272 Medicare Part D claims for 134 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium20 claims
- Prednisone14 claims
- Albuterol Sulfate Hfa11 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
- Kaiser Foundation Health Plan OF The NorthwestVancouver, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Eric Sax among 2,116 internal medicine physician records in Oregon
David Eric Sax, 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
- Graduated1995 · median 2008 among the 1,232 with a school on file
- Record last updated2007 · 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).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Douglas Beers, MDPortland, OR 972271720055197
- Denise Bilbao, M.D.Portland, OR 972271538173943
- Duane Burroughs, MDPortland, OR 972271134197213
- Smitha Chadaga, MDPortland, OR 972271952362295
- Darcy Deering, M.D.Portland, OR 972271205801065
- Lori Farrell, M.D.Portland, OR 972271235103987
- Elise Fulsang, MDPortland, OR 972271952305385
- Ameet Jhooty, M.DPortland, OR 972271295795938
Common questions
What is David Eric Sax, MD's NPI number?
David Eric Sax, MD's National Provider Identifier (NPI) is 1427141548, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Eric Sax, MD located?
The NPPES record lists a practice address at 3550 N Interstate Ave, Portland, OR, 97227. Phone: (503) 331-5220. Providers update this record themselves, so call before visiting.
How can I verify David Eric Sax, MD's license?
NPPES lists Oregon license number OR MD22315, 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 David Eric Sax, MD prescribe under Medicare Part D?
In 2024, David Eric Sax, MD had 272 Medicare Part D claims for 134 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.