Dr. Rachel Karen Warren, MD
- Medicare services, 2024
- 78
- Medicare patients, 2024
- 49
- Part D claims, 2024
- 36
- Hospital affiliations
- 4
- Industry payments
- $948
- Practice address
- 5050 NE Hoyt Street, Suite 156, Portland, OR 97213
- Practice phone
- Call (971) 229-8100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Plaza Ambulatory Surgery Center - Portland
Surgery Center - Medicare-Certified · Portland, Oregon
Find Dr. Warren'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. Rachel Karen Warren is a general surgeon in Portland, Oregon
Dr. Warren practices at Plaza Ambulatory Surgery Center - Portland in Portland, Oregon.
Dr. Warren's NPI, 1750640496, was assigned on May 15, 2012. Dr. Warren graduated from University of Kansas School of Med (KC/Wich/Sal) in 2012. Dr. Warren holds Oregon license MD208885.
- NPI
- 1750640496NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375893225
- NPI enumeration date
- May 15, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (971) 229-8100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Rachel Karen Warren practices at Plaza Ambulatory Surgery Center - Portland in Portland, Oregon
Dr. Warren's primary practice is Plaza Ambulatory Surgery Center - Portland, at 5050 NE Hoyt Street, Suite 156, Portland, OR 97213. The practice phone is (971) 229-8100.
- Plaza Ambulatory Surgery Center - Portland5050 NE Hoyt Street, Suite 156, Portland, OR 97213Phone(971) 229-8100
Source: Dmand AI Affiliation Data
Dr. Rachel Karen Warren is affiliated with 6 sites of care and 1 medical group
Dr. Warren's primary practice is Plaza Ambulatory Surgery Center - Portland in Portland, Oregon. Dr. Warren is also affiliated with Providence St. Vincent Medical Center. The medical group on file is Compass Oncology. Dmand AI also links Dr. Warren to 3 more hospitals 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. Rachel Karen Warren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Warren practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Plaza Ambulatory Surgery Center - Portland | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rachel Karen Warren is one of 438 general surgeons in Oregon
Surgery is Dr. Warren's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Warren is licensed in Oregon.
Specialties and state licenses
- Surgery, OregonPrimary
General surgeons near Dr. Warren
Counts of general surgeons 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. Rachel Karen Warren billed Medicare for 78 services in 2024
CMS data shows 78 Medicare services from Dr. Warren across 4 procedure codes in 2024, for 49 Medicare patients. Medicare paid $9,622 for them.
Dr. Warren's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 02024: 34
- Imaging
- 2023: 212024: 225%
- Surgery
- 2023: 222024: 22No change
Where Dr. Warren's Medicare services took place, 2024
- In an office3444%
- In a facility4456%
Dr. Warren compared with the Oregon median for general surgeons, 2024
- Dr. Warren
- Oregon median
- Medicare services
- 78vs 836% below
- Medicare patients
- 49vs 8240% below
- Part D claims
- 12vs 4774% below
Medians across 433 general surgeons in Oregon with Dmand AI profiles that report each measure.
Dr. Warren'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. Rachel Karen Warren treated 49 Medicare patients in 2024, average age 72
CMS counts 49 Medicare patients who saw Dr. Warren in 2024. The largest group is 65 to 74, with 31 patients. 71% of them have cancer, and 67% have high blood pressure. Their average risk score is 1.51, 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. Warren's median patient age at 55, with 90% women.
Dr. Warren's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Warren's Medicare patients, 2024
- Cancer71%
- High blood pressure67%
- High cholesterol67%
- Arthritis43%
- Anxiety31%
- Chronic kidney disease29%
- Diabetes29%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Warren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women90%
- Men9%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Rachel Karen Warren wrote 36 Medicare Part D claims in 2024
In 2024, Dr. Warren wrote 36 Medicare Part D claims for 26 patients. 100% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $30 in total drug cost. In 2021, CMS named 93 claims across 6 drugs.
Dr. Warren'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. Warren's Part D claims, 2024
- Opioids44%16 of 36 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, 2021 to 2024
- 2021
- 2024
- Claims for drugs CMS names
- 2021: 932024: 1287%
Drugs named by CMS: 1 in 2024, 6 in 2021.
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. Rachel Karen Warren takes part in Medicare
Dr. Warren accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
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. Rachel Karen Warren received $948 in industry payments from 2016 to 2022
CMS Open Payments shows 20 general payments to Dr. Warren from 14 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Mallinckrodt LLC paid the most, $392.
General payments to Dr. Warren by program year, 2016 to 2022
Companies that paid Dr. Warren the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Rachel Karen Warren graduated from University of Kansas School of Med (KC/Wich/Sal)
Dr. Warren graduated from University of Kansas School of Med (KC/Wich/Sal) in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Rachel Karen Warren'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. Rachel Karen Warren
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. Rachel Karen Warren's NPI number?
Dr. Rachel Karen Warren's NPI number is 1750640496. It was assigned on May 15, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Rachel Karen Warren?
Dr. Rachel Karen Warren is a general surgeon in Portland, Oregon. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Rachel Karen Warren practice?
Dr. Warren practices at 5050 NE Hoyt Street, Suite 156, Portland, OR 97213. Dr. Warren's primary practice is Plaza Ambulatory Surgery Center - Portland in Portland, Oregon. Dmand AI also links Dr. Warren to 3 hospitals and 1 group practice or clinic.
What is Dr. Rachel Karen Warren's office phone number?
The practice phone on file for Dr. Warren is (971) 229-8100.
What is Dr. Rachel Karen Warren's medical license number?
Dr. Warren holds Oregon license MD208885.
Which hospitals is Dr. Rachel Karen Warren affiliated with?
Dr. Warren is affiliated with Providence St. Vincent Medical Center. Dmand AI links Dr. Warren to 3 more hospitals.
What medical group is Dr. Rachel Karen Warren part of?
Dr. Warren is linked to Compass Oncology.
Does Dr. Rachel Karen Warren accept Medicare?
Yes. CMS data shows Dr. Warren billed Medicare for 78 services in 2024, and Dr. Warren accepts Medicare assignment.
How many Medicare patients does Dr. Rachel Karen Warren see?
CMS counts 49 Medicare patients who saw Dr. Warren in 2024, with an average age of 72.
What services does Dr. Rachel Karen Warren bill to Medicare?
In 2024, Dr. Warren's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36561) and radiation oncology (77001).
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Where did Dr. Rachel Karen Warren go to medical school?
Dr. Warren graduated from University of Kansas School of Med (KC/Wich/Sal) in 2012.
What drugs does Dr. Rachel Karen Warren prescribe most?
In 2024 Medicare Part D data, Dr. Warren's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Rachel Karen Warren received payments from drug or device companies?
CMS Open Payments shows $948 in general payments to Dr. Warren from 14 companies from 2016 to 2022. The largest total came from Mallinckrodt LLC.
How long has Dr. Rachel Karen Warren been practicing?
Dr. Warren graduated from medical school in 2012, 14 years ago.
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