Michael Dean Dellinger, MD
Internal Medicine Physician · Portland, OR
Michael Dean Dellinger, MD is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1548277478, issued on Aug 2, 2006. Check the license (Oregon MD18240, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael Dean Dellinger
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD18240 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD, Portland, OR 97239
- Phone
- (503) 494-8562
- Enumerated
- Aug 2, 2006
- Record last updated
- Jun 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 073978 OR
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 3181 SW Sam Jackson Park RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Dean Dellinger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD18240Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
330 Medicare Part D claims for 75 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Mirtazapine22 claims
- Metoprolol Succinate21 claims
- Levothyroxine Sodium20 claims
- Pantoprazole Sodium18 claims
- Oxycodone Hcl13 claims
- Amlodipine Besylate12 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.
Michael Dean Dellinger among 2,116 internal medicine physician records in Oregon
Michael Dean Dellinger, 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 fileNo · 58% of these records are
- Record last updated2011 · 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
- Thomas Anderson, M.D.Portland, OR 972391497786081
- Katherine Bensching, M.D.Portland, OR 972391407823867
- Clarisa Borrego, MDPortland, OR 972391912934514
- Ella BowmanPortland, OR 972391467436873
- Geoffery Clover, M.D.Portland, OR 972391972504314
- Paul Gorman, M.D.Portland, OR 972391326083742
- Joseph Hardman, M.D.Portland, OR 972391821044306
- Alan Hendin, MDPortland, OR 972391437127644
Common questions
What is Michael Dean Dellinger, MD's NPI number?
Michael Dean Dellinger, MD's National Provider Identifier (NPI) is 1548277478, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Dean Dellinger, MD located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD, Portland, OR, 97239. Phone: (503) 494-8562. Providers update this record themselves, so call before visiting.
How can I verify Michael Dean Dellinger, MD's license?
NPPES lists Oregon license number MD18240, 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 Michael Dean Dellinger, MD prescribe under Medicare Part D?
In 2024, Michael Dean Dellinger, MD had 330 Medicare Part D claims for 75 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.