Dennis O. Mayer, MD
Internal Medicine Physician · Milwaukie, OR
Dennis O. Mayer, MD is an internal medicine physician with a practice address in Milwaukie, Oregon, and NPI 1235112723, issued on Nov 29, 2005. Check the license (Oregon MD10890, as entered in NPPES) on the Oregon Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Dennis O. Mayer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD10890 OR
Self-reported in NPPES; status is on the state search - Practice location
- 10024 SE 32ND Ave, Milwaukie, OR 97222
- Phone
- (503) 659-4988
- Enumerated
- Nov 29, 2005
- Record last updated
- Aug 2, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (503) 654-5666
- Medicaid ID
- 240820 OR
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 10024 SE 32ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine KellyAudiologist1942745237
- Maeve Kirkpatrick, AUDAudiologist1295615706
- Melissa Thompson, PAPhysician Assistant1215911599
- Elaine Vale, MDFamily Medicine Physician1225129794
Verify Dennis O. Mayer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD10890Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Dennis O. Mayer among 2,116 internal medicine physician records in Oregon
Dennis O. Mayer, 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 not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2010 · 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).
22 internal medicine physician records list a practice address in Milwaukie
They are 22 of the 1,998 NPPES records with a practice address in Milwaukie, and 2,116 internal medicine physician records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,116 in Oregon → Every provider in Milwaukie → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rhonda Brown, MDMilwaukie, OR 972221083935787
- Gregory Camp, MDMilwaukie, OR 972221912122698
- Stacie Carney, MDMilwaukie, OR 972221154527042
- Swapna Chennareddygari, MBBSMilwaukie, OR 972221558565150
- Deborah Frost, MDMilwaukie, OR 972221427003888
- Lisa Joyner, M.D.Milwaukie, OR 972221821216508
- David Maslen, MDMilwaukie, OR 972221033192521
- Petra Niemann, MDMilwaukie, OR 972221538115613
Common questions
What is Dennis O. Mayer, MD's NPI number?
Dennis O. Mayer, MD's National Provider Identifier (NPI) is 1235112723, issued on Nov 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dennis O. Mayer, MD located?
The NPPES record lists a practice address at 10024 SE 32ND Ave, Milwaukie, OR, 97222. Phone: (503) 659-4988. Providers update this record themselves, so call before visiting.
How can I verify Dennis O. Mayer, MD's license?
NPPES lists Oregon license number MD10890, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.