Aaron Benjamin Case, MD
Emergency Medicine Physician · Portland, OR
Aaron Benjamin Case, MD is an emergency medicine physician with a practice address in Portland, Oregon, and NPI 1134495567, issued on Mar 29, 2012. Check the license (Oregon MD166184, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Aaron Benjamin Case
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD166184 OR
Self-reported in NPPES; status is on the state search - Practice location
- 10000 SE Main St, Portland, OR 97216
- Phone
- (503) 396-2503
- Enumerated
- Mar 29, 2012
- Record last updated
- Jun 1, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,079 in Oregon → Look up another NPI →
Also registered at 10000 SE Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Aaron Benjamin Case in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD166184Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average emergency medicine physician in 2024
260 Medicare Part D claims for 172 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 43 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen24 claims
- Prednisone23 claims
- Cephalexin21 claims
- Ondansetron Odt21 claims
- Meclizine Hcl11 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): 97.5 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).
Aaron Benjamin Case among 1,079 emergency medicine physician records in Oregon
Aaron Benjamin Case, MD is one of 1,079 emergency medicine physician records with a practice address in Oregon. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 63% of them.
- NPI issued2012 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2015 · 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 207P00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Oregon
There are 1,079 emergency medicine physician records in Oregon.
All 1,079 in Oregon → Every provider in Portland → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Alec Belman, MDPortland, OR 972161992755987
- Mathew Berner, MDPortland, OR 972161831391358
- Ameet Brahmavar, MDPortland, OR 972161205959947
- Hani Darwich, MDPortland, OR 972161003873340
- Kevin Dean, M.D.Portland, OR 972161841215480
- Marcel Dupre', MDPortland, OR 972161326000944
- Erik Egsieker, MDPortland, OR 972161205898806
- Joe Howton, MDPortland, OR 972161942263579
Common questions
What is Aaron Benjamin Case, MD's NPI number?
Aaron Benjamin Case, MD's National Provider Identifier (NPI) is 1134495567, issued on Mar 29, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Benjamin Case, MD located?
The NPPES record lists a practice address at 10000 SE Main St, Portland, OR, 97216. Phone: (503) 396-2503. Providers update this record themselves, so call before visiting.
How can I verify Aaron Benjamin Case, MD's license?
NPPES lists Oregon license number MD166184, 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 Aaron Benjamin Case, MD prescribe under Medicare Part D?
In 2024, Aaron Benjamin Case, MD had 260 Medicare Part D claims for 172 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Aaron Benjamin Case, MD's MIPS final score?
The 2023 MIPS final score is 97.5 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.