Dr. Regan Melissa Duffy, MD
- Medicare services, 2024
- 557
- Medicare patients, 2024
- 102
- Part D claims, 2024
- 777
- Hospital affiliations
- 3
- Industry payments
- $61
- Practice address
- 4805 NE Glisan Street, Portland, OR 97213
- Practice phone
- Call (503) 215-1111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Duffy's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Regan Melissa Duffy is an internist in Portland, Oregon
Dr. Duffy practices at Providence Portland Medical Center in Portland, Oregon, part of Providence Health & Services.
Dr. Duffy's NPI, 1487876827, was assigned on May 3, 2007. Dr. Duffy graduated from OHSU School of Medicine in 2007. Dr. Duffy's Oregon license number on file is MD28919.
- NPI
- 1487876827NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082869656
- NPI enumeration date
- May 3, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 215-1111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Regan Melissa Duffy practices at Providence Portland Medical Center in Portland, Oregon
Dr. Duffy's primary practice is Providence Portland Medical Center, at 4805 NE Glisan Street, Portland, OR 97213 in Multnomah County. The practice phone is (503) 215-1111.
- Providence Portland Medical Center4805 NE Glisan Street, Portland, OR 97213 · Multnomah CountyPhone(503) 215-1111
Source: Dmand AI Affiliation Data
Dr. Regan Melissa Duffy is affiliated with 6 sites of care and 5 medical groups
Dr. Duffy's primary practice is Providence Portland Medical Center in Portland, Oregon, part of Providence Health & Services. Dr. Duffy is also affiliated with Providence St. Vincent Medical Center. The medical group on file is Providence Medical Group, Oregon. Dmand AI also links Dr. Duffy to 1 more hospital, 4 medical groups and 3 group practices and clinics, 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. Regan Melissa Duffy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duffy practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Portland Medical Center | Available with a free account |
| +5 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Regan Melissa Duffy is one of 1,680 internists in Oregon
Internal medicine is Dr. Duffy's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Duffy is board certified in medical oncology by the American Board of Internal Medicine. Dr. Duffy has a license on file in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Clinical focus
Dmand AI lists lung cancer and prostate cancer among the conditions Dr. Duffy treats.
Internists near Dr. Duffy
Counts of internists 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. Regan Melissa Duffy billed Medicare for 557 services in 2024
CMS data shows 557 Medicare services from Dr. Duffy across 4 procedure codes in 2024, for 102 Medicare patients. Medicare paid $39,993 for them. Every service was in an office.
Dr. Duffy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3142024: 2898%
- Other services
- 2023: 242024: 2681017%
Dr. Duffy compared with the Oregon median for internists, 2024
- Dr. Duffy
- Oregon median
- Medicare services
- 557vs 30086% above
- Medicare patients
- 102vs 13223% below
- Part D claims
- 627vs 2222.8 times
Medians across 1,791 internists in Oregon with Dmand AI profiles that report each measure.
Dr. Duffy'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Duffy and other internists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Regan Melissa Duffy treated 102 Medicare patients in 2024, average age 73
CMS counts 102 Medicare patients who saw Dr. Duffy in 2024. The largest group is 65 to 74, with 46 patients. 75% of them have cancer, and 58% have high blood pressure. 21% are also on Medicaid. Their average risk score is 1.98, 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. Duffy's median patient age at 73, with 60% women.
Dr. Duffy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Duffy's Medicare patients by sex, 2024
- Women5857%
- Men4443%
Chronic conditions among Dr. Duffy's Medicare patients, 2024
- Cancer75%
- High blood pressure58%
- High cholesterol57%
- COPD37%
- Arthritis31%
- Anxiety25%
- Mood disorders23%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Duffy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Regan Melissa Duffy wrote 777 Medicare Part D claims in 2024
In 2024, Dr. Duffy wrote 777 Medicare Part D claims for 119 patients. 73% of them were for generic drugs. CMS names the drug for 627 of them, across 22 drugs with 11 or more claims each, at $2,031,008 in total drug cost. In 2023, CMS named 465 claims across 16 drugs.
Dr. Duffy's Part D claims by kind of drug, 2024
- Generic566 claims73%
- Brand-name and other211 claims27%
Dr. Duffy'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. Duffy's Part D claims, 2024
- Opioids8%59 of 777 claims
- Antibiotics3%21 of 777 claims
- Antipsychotics, patients 65 and over4%30 of 777 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: 4652024: 62735%
Drugs named by CMS: 22 in 2024, 16 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
Dr. Regan Melissa Duffy offers telehealth to Medicare patients
Dr. Duffy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Duffy as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Regan Melissa Duffy received $61 in industry payments from 2017 to 2023
CMS Open Payments shows 2 general payments to Dr. Duffy from 2 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $43.
General payments to Dr. Duffy by program year, 2017 to 2023
Companies that paid Dr. Duffy the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Regan Melissa Duffy graduated from OHSU School of Medicine
Dr. Duffy graduated from OHSU School of Medicine in 2007. Dr. Duffy is a member of ASCO and International Association for the Study of Lung Cancer.
- Medical school
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Regan Melissa Duffy accepts plans from 11 insurance carriers
Dr. Duffy is in network with 11 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- Regence Health Plans
- Aetna
- Alliant Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +3 more carriersWith a free account
Plan types Dr. Duffy accepts, by number of carriers
- PPO6
- HMO5
- Medicare3
- POS3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Regan Melissa Duffy'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Regan Melissa Duffy
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. Regan Melissa Duffy's NPI number?
Dr. Regan Melissa Duffy's NPI number is 1487876827. It was assigned on May 3, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Regan Melissa Duffy?
Dr. Regan Melissa Duffy is an internist in Portland, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Regan Melissa Duffy practice?
Dr. Duffy practices at 4805 NE Glisan Street, Portland, OR 97213. Dr. Duffy's primary practice is Providence Portland Medical Center in Portland, Oregon, part of Providence Health & Services. Dmand AI also links Dr. Duffy to 1 hospital, 4 medical groups and 3 group practices and clinics.
What is Dr. Regan Melissa Duffy's office phone number?
The practice phone on file for Dr. Duffy is (503) 215-1111.
What is Dr. Regan Melissa Duffy's medical license number?
Dr. Duffy's Oregon license number on file is MD28919.
Which hospitals is Dr. Regan Melissa Duffy affiliated with?
Dr. Duffy practices at Providence Portland Medical Center in Portland, Oregon. Dr. Duffy is also affiliated with Providence St. Vincent Medical Center. Dmand AI links Dr. Duffy to 1 more hospital.
What medical group is Dr. Regan Melissa Duffy part of?
Dr. Duffy is linked to Providence Medical Group, Oregon. Dmand AI links Dr. Duffy to 4 more medical groups.
Does Dr. Regan Melissa Duffy accept Medicare?
Yes. CMS data shows Dr. Duffy billed Medicare for 557 services in 2024, and Dr. Duffy accepts Medicare assignment.
Does Dr. Regan Melissa Duffy offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Duffy as offering telehealth services.
How many Medicare patients does Dr. Regan Melissa Duffy see?
CMS counts 102 Medicare patients who saw Dr. Duffy in 2024, with an average age of 73.
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Is Dr. Regan Melissa Duffy board certified?
Yes. Dr. Duffy is board certified in medical oncology by the American Board of Internal Medicine.
What services does Dr. Regan Melissa Duffy bill to Medicare?
In 2024, Dr. Duffy's most billed Medicare services were medicare service (G2211), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Regan Melissa Duffy go to medical school?
Dr. Duffy graduated from OHSU School of Medicine in 2007.
What drugs does Dr. Regan Melissa Duffy prescribe most?
In 2024 Medicare Part D data, Dr. Duffy's most prescribed drugs by claims were Tagrisso, Dexamethasone and Prochlorperazine Maleate.
Has Dr. Regan Melissa Duffy received payments from drug or device companies?
CMS Open Payments shows $61 in general payments to Dr. Duffy from 2 companies from 2017 to 2023. The largest total came from Amgen Inc.
How long has Dr. Regan Melissa Duffy been practicing?
Dr. Duffy graduated from medical school in 2007, 19 years ago.
What insurance does Dr. Regan Melissa Duffy accept?
Dr. Duffy is in network with 11 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Elevance. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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