Dr. Melissa S. Defreest, MD
- Medicare services, 2024
- 28
- Medicare patients, 2024
- 47
- Part D claims, 2024
- 140
- Hospital affiliations
- 1
- Medical groups
- 6
- Practice address
- 3321 W 11th Ave, Eugene, OR 97402
- Practice phone
- Call (541) 687-6217
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Peacehealth Medical Group
Eugene, Oregon
Find Dr. Defreest'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. Melissa S. Defreest is an emergency medicine physician in Eugene, Oregon
Dr. Defreest practices at Peacehealth Medical Group in Eugene, Oregon.
Dr. Defreest's NPI, 1407960388, was assigned on August 18, 2006. Dr. Defreest graduated from Oregon Health Sciences University School of Medicine in 2003. Dr. Defreest holds Oregon license MD41141.
- NPI
- 1407960388NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850398884
- NPI enumeration date
- August 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (541) 687-6217
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Melissa S. Defreest practices at Peacehealth Medical Group in Eugene, Oregon
Dr. Defreest's primary practice is Peacehealth Medical Group, at 3321 W 11th Ave, Eugene, OR 97402 in Lane County. The practice phone is (541) 687-6217.
- Peacehealth Medical Group3321 W 11th Ave, Eugene, OR 97402 · Lane CountyPhone(541) 687-6217
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Melissa S. Defreest is affiliated with 4 sites of care and 6 medical groups
Dr. Defreest's primary practice is Peacehealth Medical Group in Eugene, Oregon. Dr. Defreest is also affiliated with PeaceHealth Cottage Grove Community Medical Center. The medical group on file is PeaceHealth Medical Group. Dmand AI also links Dr. Defreest to 5 more medical groups, 1 community health center and 1 group practice or clinic, each 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. Melissa S. Defreest's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Defreest practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peacehealth Medical Group | Available with a free account |
| +3 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Melissa S. Defreest is one of 962 emergency medicine physicians in Oregon
Emergency medicine is Dr. Defreest's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Defreest is licensed in Oregon.
Specialties and state licenses
- Emergency medicine, OregonPrimary
Emergency medicine physicians near Dr. Defreest
Counts of emergency 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. Melissa S. Defreest billed Medicare for 28 services in 2024
CMS data shows 28 Medicare services from Dr. Defreest across 1 procedure code in 2024, all of them office visits, for 47 Medicare patients. Medicare paid $1,881 for them. Every service was in an office.
Dr. Defreest's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1172024: 2876%
Dr. Defreest compared with the Oregon median for emergency medicine physicians, 2024
- Dr. Defreest
- Oregon median
- Medicare services
- 28vs 17784% below
- Medicare patients
- 47vs 18174% below
- Part D claims
- 37vs 4924% below
Medians across 1,000 emergency medicine physicians in Oregon with Dmand AI profiles that report each measure.
Dr. Defreest'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. Defreest and other emergency medicine physicians in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Melissa S. Defreest treated 47 Medicare patients in 2024, average age 70
CMS counts 47 Medicare patients who saw Dr. Defreest in 2024. The largest group is 65 to 74, with 18 patients. 72% of them have high blood pressure, and 62% have high cholesterol. 26% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Defreest's median patient age at 53, with 65% women.
Dr. Defreest's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Defreest's Medicare patients by sex, 2024
- Women2860%
- Men1940%
Chronic conditions among Dr. Defreest's Medicare patients, 2024
- High blood pressure72%
- High cholesterol62%
- Arthritis47%
- Anxiety32%
- Mood disorders28%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Defreest's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women65%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Melissa S. Defreest wrote 140 Medicare Part D claims in 2024
In 2024, Dr. Defreest wrote 140 Medicare Part D claims for 93 patients. 99% of them were for generic drugs. CMS names the drug for 37 of them, across 2 drugs with 11 or more claims each, at $265 in total drug cost. In 2023, CMS named 46 claims across 3 drugs.
Dr. Defreest's Part D claims by kind of drug, 2024
- Generic138 claims99%
- Brand-name and other2 claims1%
Dr. Defreest'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. Defreest's Part D claims, 2024
- Opioids19%26 of 140 claims
- Antibiotics37%52 of 140 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: 462024: 3720%
Drugs named by CMS: 2 in 2024, 3 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. Melissa S. Defreest takes part in Medicare
Dr. Defreest accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Skin biopsy: 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. Melissa S. Defreest graduated from Oregon Health Sciences University School of Medicine
Dr. Defreest graduated from Oregon Health Sciences University School of Medicine in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Melissa S. Defreest'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) |
| 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. Melissa S. Defreest
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. Melissa S. Defreest's NPI number?
Dr. Melissa S. Defreest's NPI number is 1407960388. It was assigned on August 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Melissa S. Defreest?
Dr. Melissa S. Defreest is an emergency medicine physician in Eugene, Oregon. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Melissa S. Defreest practice?
Dr. Defreest practices at 3321 W 11th Ave, Eugene, OR 97402. Dr. Defreest's primary practice is Peacehealth Medical Group in Eugene, Oregon. Dmand AI also links Dr. Defreest to 5 medical groups, 1 community health center and 1 group practice or clinic.
What is Dr. Melissa S. Defreest's office phone number?
The practice phone on file for Dr. Defreest is (541) 687-6217.
What is Dr. Melissa S. Defreest's medical license number?
Dr. Defreest holds Oregon license MD41141.
Which hospitals is Dr. Melissa S. Defreest affiliated with?
Dr. Defreest is affiliated with PeaceHealth Cottage Grove Community Medical Center.
What medical group is Dr. Melissa S. Defreest part of?
Dr. Defreest is linked to PeaceHealth Medical Group. Dmand AI links Dr. Defreest to 5 more medical groups.
Does Dr. Melissa S. Defreest accept Medicare?
Yes. CMS data shows Dr. Defreest billed Medicare for 28 services in 2024, and Dr. Defreest accepts Medicare assignment.
How many Medicare patients does Dr. Melissa S. Defreest see?
CMS counts 47 Medicare patients who saw Dr. Defreest in 2024, with an average age of 70.
What services does Dr. Melissa S. Defreest bill to Medicare?
In 2024, Dr. Defreest's most billed Medicare services were office visit, established patient (99213).
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Where did Dr. Melissa S. Defreest go to medical school?
Dr. Defreest graduated from Oregon Health Sciences University School of Medicine in 2003.
What drugs does Dr. Melissa S. Defreest prescribe most?
In 2024 Medicare Part D data, Dr. Defreest's most prescribed drugs by claims were Cephalexin and Hydrocodone-Acetaminophen.
How long has Dr. Melissa S. Defreest been practicing?
Dr. Defreest graduated from medical school in 2003, 23 years ago.
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