Dr. John Thomas Denker, MD
- Medicare services, 2024
- 334
- Medicare patients, 2024
- 226
- Part D claims, 2024
- 7,357
- Hospital affiliations
- 1
- Industry payments
- $3,916
- Practice address
- 10123 Se Market Street, Portland, OR 97216
- Practice phone
- Call (503) 257-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. John Thomas Denker is an adult medicine physician in Portland, Oregon
Dr. Denker practices at Adventist Health Portland in Portland, Oregon, part of Adventist Health.
Dr. Denker's NPI, 1942201546, was assigned on August 3, 2005. Dr. Denker graduated from Oregon Health Sciences University School of Medicine in 1980. Dr. Denker holds Oregon license MD 12668.
- NPI
- 1942201546NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941334304
- NPI enumeration date
- August 3, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 257-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Thomas Denker practices at Adventist Health Portland in Portland, Oregon
Dr. Denker's primary practice is Adventist Health Portland, at 10123 Se Market Street, Portland, OR 97216 in Multnomah County. The practice phone is (503) 257-2500.
- Adventist Health Portland10123 Se Market Street, Portland, OR 97216 · Multnomah CountyPhone(503) 257-2500
Source: Dmand AI Affiliation Data
Dr. John Thomas Denker is affiliated with 5 sites of care and 1 medical group
Dr. Denker's primary practice is Adventist Health Portland in Portland, Oregon, part of Adventist Health. The medical group on file is AgeRight Clinical Services. Dmand AI also links Dr. Denker to 3 more skilled nursing facilities and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Thomas Denker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Denker practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Portland | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Adventist Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Thomas Denker is one of 16 adult medicine physicians in Oregon
Adult medicine is Dr. Denker's primary specialty in the NPI Registry, under taxonomy code 207QA0505X. Dr. Denker is licensed in Oregon.
Specialties and state licenses
- Adult medicine, OregonPrimary
Adult medicine physicians near Dr. Denker
Counts of adult medicine physicians 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. John Thomas Denker billed Medicare for 334 services in 2024
CMS data shows 334 Medicare services from Dr. Denker across 5 procedure codes in 2024, for 226 Medicare patients. Medicare paid $21,078 for them.
Dr. Denker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1532024: 334118%
Where Dr. Denker's Medicare services took place, 2024
- In an office4714%
- In a facility28786%
Dr. Denker compared with the Oregon median for adult medicine physicians, 2024
- Dr. Denker
- Oregon median
- Part D claims
- 6,630vs 36618.1 times
Medians across 16 adult medicine physicians in Oregon with Dmand AI profiles that report each measure.
Dr. Denker's most billed Medicare procedure codes, 2024
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Thomas Denker treated 226 Medicare patients in 2024, average age 80
CMS counts 226 Medicare patients who saw Dr. Denker in 2024. The largest group is 75 to 84, with 106 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 2.17, 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. Denker's median patient age at 81, with 63% women.
Dr. Denker's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Denker's Medicare patients by sex, 2024
- Women13962%
- Men8738%
Chronic conditions among Dr. Denker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis60%
- Heart failure52%
- Chronic kidney disease48%
- Diabetes46%
- Ischemic heart disease43%
- Mood disorders43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Denker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Thomas Denker wrote 7,357 Medicare Part D claims in 2024
In 2024, Dr. Denker wrote 7,357 Medicare Part D claims for 424 patients. 86% of them were for generic drugs. CMS names the drug for 6,630 of them, across 149 drugs with 11 or more claims each, at $391,700 in total drug cost. In 2023, CMS named 7,263 claims across 138 drugs.
Dr. Denker's Part D claims by kind of drug, 2024
- Generic6,299 claims86%
- Brand-name1,035 claims14%
- Other23 claims0%
Dr. Denker'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. Denker's Part D claims, 2024
- Opioids4%329 of 7,357 claims
- Antibiotics4%297 of 7,357 claims
- Antipsychotics, patients 65 and over2%129 of 7,357 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: 7,2632024: 6,6309%
Drugs named by CMS: 149 in 2024, 138 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. John Thomas Denker takes part in Medicare
Dr. Denker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of tissue: 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. John Thomas Denker received $3,916 in industry payments from 2016 to 2024
CMS Open Payments shows 250 general payments to Dr. Denker from 29 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 99% of the total. Pfizer Inc. paid the most, $711.
General payments to Dr. Denker by program year, 2016 to 2024
General payments to Dr. Denker by kind, 2016 to 2024
- Food and beverage$3,87299%
- Education$451%
Companies that paid Dr. Denker the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Thomas Denker graduated from Oregon Health Sciences University School of Medicine
Dr. Denker graduated from Oregon Health Sciences University School of Medicine in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Thomas Denker'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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. John Thomas Denker
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. John Thomas Denker's NPI number?
Dr. John Thomas Denker's NPI number is 1942201546. It was assigned on August 3, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Thomas Denker?
Dr. John Thomas Denker is an adult medicine physician in Portland, Oregon. The primary specialty in the NPI Registry is Adult Medicine Physician (taxonomy code 207QA0505X).
Where does Dr. John Thomas Denker practice?
Dr. Denker practices at 10123 Se Market Street, Portland, OR 97216. Dr. Denker's primary practice is Adventist Health Portland in Portland, Oregon, part of Adventist Health. Dmand AI also links Dr. Denker to 3 skilled nursing facilities and 1 group practice or clinic.
What is Dr. John Thomas Denker's office phone number?
The practice phone on file for Dr. Denker is (503) 257-2500.
What is Dr. John Thomas Denker's medical license number?
Dr. Denker holds Oregon license MD 12668.
Which hospitals is Dr. John Thomas Denker affiliated with?
Dr. Denker practices at Adventist Health Portland in Portland, Oregon.
What medical group is Dr. John Thomas Denker part of?
Dr. Denker is linked to AgeRight Clinical Services.
Does Dr. John Thomas Denker accept Medicare?
Yes. CMS data shows Dr. Denker billed Medicare for 334 services in 2024, and Dr. Denker accepts Medicare assignment.
How many Medicare patients does Dr. John Thomas Denker see?
CMS counts 226 Medicare patients who saw Dr. Denker in 2024, with an average age of 80.
What services does Dr. John Thomas Denker bill to Medicare?
In 2024, Dr. Denker's most billed Medicare services were nursing facility care (99304), nursing facility care (99307) and nursing facility care (99308).
Show 4 more questionsShow fewer questions
Where did Dr. John Thomas Denker go to medical school?
Dr. Denker graduated from Oregon Health Sciences University School of Medicine in 1980.
What drugs does Dr. John Thomas Denker prescribe most?
In 2024 Medicare Part D data, Dr. Denker's most prescribed drugs by claims were Atorvastatin Calcium, Eliquis and Furosemide.
Has Dr. John Thomas Denker received payments from drug or device companies?
CMS Open Payments shows $3,916 in general payments to Dr. Denker from 29 companies from 2016 to 2024. The largest total came from Pfizer Inc.
How long has Dr. John Thomas Denker been practicing?
Dr. Denker graduated from medical school in 1980, 46 years ago.
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