Dr. Michael Joseph May, MD
- Medicare services, 2023
- 21
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 3,765
- Industry payments
- $137
- Affiliated sites
- 1
- Practice address
- 500 NE Multnomah St, Portland, OR 97232
- Practice phone
- Call (503) 813-2440
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Northwest
Portland, Oregon
Find Dr. May's professional email, personal email and mobile number
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Dr. Michael Joseph May is an ophthalmologist in Portland, Oregon
Dr. May practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon.
Dr. May's NPI, 1649380874, was assigned on August 30, 2006. Dr. May graduated from Ohio State University College of Medicine in 1994. Dr. May holds Oregon license MD25495.
- NPI
- 1649380874NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244203156
- NPI enumeration date
- August 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 813-2440
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Joseph May practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon
Dr. May's primary practice is Kaiser Foundation Health Plan of the Northwest, at 500 NE Multnomah St, Portland, OR 97232 in Multnomah County. The practice phone is (503) 813-2440.
- Kaiser Foundation Health Plan of the Northwest500 NE Multnomah St, Portland, OR 97232 · Multnomah CountyPhone(503) 813-2440
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael Joseph May is affiliated with 2 sites of care and 1 medical group
Dr. May's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. The medical group on file is Kaiser Permanente Northwest. Dmand AI also links Dr. May to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Joseph May's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. May practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Northwest | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Joseph May is one of 272 ophthalmologists in Oregon
Ophthalmology is Dr. May's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Dr. May's licenses on file in 2 states: Oregon and Washington.
Specialties and state licenses
- Ophthalmology, OregonPrimary
- Washington license
Ophthalmologists near Dr. May
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael Joseph May billed Medicare for 21 services in 2023
CMS data shows 21 Medicare services from Dr. May across 1 procedure code in 2023, for 12 Medicare patients. Medicare paid $956 for them. Every service was in an office.
Dr. May's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Tests and treatments
- 2022: 162023: 2131%
Dr. May compared with the Oregon median for ophthalmologists, 2023
- Dr. May
- Oregon median
- Medicare services
- 21vs 1,10098% below
- Medicare patients
- 12vs 49598% below
- Part D claims
- 3,687vs 5666.5 times
Medians across 288 ophthalmologists in Oregon with Dmand AI profiles that report each measure.
Dr. May's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. May and other ophthalmologists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Joseph May treated 12 Medicare patients in 2024, average age 70
CMS counts 12 Medicare patients who saw Dr. May in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 1.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. May's median patient age at 58, with 57% women.
Dr. May's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. May's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Joseph May wrote 3,765 Medicare Part D claims in 2024
In 2024, Dr. May wrote 3,765 Medicare Part D claims for 810 patients. 79% of them were for generic drugs. CMS names the drug for 3,687 of them, across 17 drugs with 11 or more claims each, at $196,273 in total drug cost. In 2023, CMS named 3,789 claims across 17 drugs.
Dr. May's Part D claims by kind of drug, 2024
- Generic2,981 claims79%
- Brand-name784 claims21%
Dr. May's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. May's Part D claims, 2024
- Antibiotics1%24 of 3,765 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,7892024: 3,6873%
Drugs named by CMS: 17 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Michael Joseph May takes part in Medicare
Dr. May accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Michael Joseph May received $137 in industry payments from 2017 to 2024
CMS Open Payments shows 2 general payments to Dr. May from 2 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. RxSight Inc paid the most, $101.
General payments to Dr. May by program year, 2017 to 2024
Companies that paid Dr. May the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Joseph May graduated from Ohio State University College of Medicine
Dr. May graduated from Ohio State University College of Medicine in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Joseph May's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael Joseph May
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael Joseph May's NPI number?
Dr. Michael Joseph May's NPI number is 1649380874. It was assigned on August 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Joseph May?
Dr. Michael Joseph May is an ophthalmologist in Portland, Oregon. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Michael Joseph May practice?
Dr. May practices at 500 NE Multnomah St, Portland, OR 97232. Dr. May's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. Dmand AI also links Dr. May to 1 group practice or clinic.
What is Dr. Michael Joseph May's office phone number?
The practice phone on file for Dr. May is (503) 813-2440.
What is Dr. Michael Joseph May's medical license number?
Dr. May holds Oregon license MD25495, one of the licenses on file in 2 states.
Which states has Dr. Michael Joseph May been licensed in?
Dmand AI has state licenses on file for Dr. May in Oregon and Washington.
What medical group is Dr. Michael Joseph May part of?
Dr. May is linked to Kaiser Permanente Northwest.
Does Dr. Michael Joseph May accept Medicare?
Yes. CMS data shows Dr. May billed Medicare for 21 services in 2023, and Dr. May accepts Medicare assignment.
How many Medicare patients does Dr. Michael Joseph May see?
CMS counts 12 Medicare patients who saw Dr. May in 2024, with an average age of 70.
What services does Dr. Michael Joseph May bill to Medicare?
In 2023, Dr. May's most billed Medicare services were eye exam or test (92012).
Show 4 more questionsShow fewer questions
Where did Dr. Michael Joseph May go to medical school?
Dr. May graduated from Ohio State University College of Medicine in 1994.
What drugs does Dr. Michael Joseph May prescribe most?
In 2024 Medicare Part D data, Dr. May's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Prednisolone Acetate.
Has Dr. Michael Joseph May received payments from drug or device companies?
CMS Open Payments shows $137 in general payments to Dr. May from 2 companies from 2017 to 2024. The largest total came from RxSight Inc.
How long has Dr. Michael Joseph May been practicing?
Dr. May graduated from medical school in 1994, 32 years ago.
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