Michael Joseph May, M.D.
Ophthalmology Physician · Portland, OR
Michael Joseph May, M.D. is an ophthalmology physician with a practice address in Portland, Oregon, and NPI 1649380874, issued on Aug 30, 2006. Check the license (Oregon MD25495, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael Joseph May
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- MD25495 OR
MD00044396 WA
Self-reported in NPPES; status is on the state search - Practice location
- 3600 N Interstate Ave, Portland, OR 97227
- Phone
- (503) 331-6330
- Enumerated
- Aug 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20051130000962); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 322 in Oregon → Look up another NPI →
Also registered at 3600 N Interstate Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jennifer AndersonOncology Registered Nurse1942139019
- Shareen BakerOptician1851488373
- Christine Barnett, M.D.Hematology & Oncology Physician1679772743
- Lane Barton, MDPhysical Medicine & Rehabilitation Physician1114036746
Verify Michael Joseph May in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD25495Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,765 Medicare Part D claims for 810 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Latanoprost1,347 claims
- Dorzolamide-Timolol489 claims
- Prednisolone Acetate421 claims
- Brimonidine Tartrate418 claims
- Timolol Maleate347 claims
- Dorzolamide Hcl142 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.
Industry payments in 2024: $100.57
1 payment: food and beverage; the largest payer was RxSight Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF The NorthwestClackamas, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Joseph May among 322 ophthalmology physician records in Oregon
Michael Joseph May, M.D. is one of 322 ophthalmology physician records with a practice address in Oregon. 67% 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 24% of them.
- NPI issued2006 · 24% of these records are older, 45% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1994 · median 2007 among the 189 with a school on file
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Oregon
There are 322 ophthalmology physician records in Oregon.
All 322 in Oregon → Every provider in Portland → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Diana Bennett, MDPortland, OR 972271770676355
- Melinda Binkley, M.D.Portland, OR 972271508209040
- Anthony Cirino, M.D.Portland, OR 972271235245218
- William Harris, MDPortland, OR 972271902908767
- Griffin Jardine, M.D.Portland, OR 972271811280787
- John Koo, MDPortland, OR 972271043356470
- Rachel Landon, M.D.Portland, OR 972271578664223
- Wayne Lo, MDPortland, OR 972271356373047
Common questions
What is Michael Joseph May, M.D.'s NPI number?
Michael Joseph May, M.D.'s National Provider Identifier (NPI) is 1649380874, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Joseph May, M.D. located?
The NPPES record lists a practice address at 3600 N Interstate Ave, Portland, OR, 97227. Phone: (503) 331-6330. Providers update this record themselves, so call before visiting.
How can I verify Michael Joseph May, M.D.'s license?
NPPES lists Oregon license number MD25495, 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 Joseph May, M.D. prescribe under Medicare Part D?
In 2024, Michael Joseph May, M.D. had 3,765 Medicare Part D claims for 810 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.