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Dr. Roger E. Der, MD
NPI1558355156PAC ID9638172091
- Medicare services, 2024
- 2,198
- Medicare patients, 2024
- 814
- Publications
- 1
- MIPS score, 2024
- 100
- Hospital affiliations
- 2
- Practice address
- 300 W Huntington Dr, Arcadia, CA 91007
- Practice phone
- Call (626) 898-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Der's professional email, personal email and mobile number
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Dr. Roger E. Der is a pathologist in Arcadia, California
Dr. Der practices at USC Arcadia Hospital in Arcadia, California, part of University of Southern California.
Dr. Der's NPI, 1558355156, was assigned on September 9, 2005. Dr. Der graduated from Keck School of Medicine of USC in 1996. Dr. Der holds California license A65753.
NPI and contact details
- NPI
- 1558355156NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638172091
- NPI enumeration date
- September 9, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 898-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Roger E. Der practices at USC Arcadia Hospital in Arcadia, California
Dr. Der's primary practice is USC Arcadia Hospital, at 300 W Huntington Dr, Arcadia, CA 91007 in Los Angeles County. The practice phone is (626) 898-8000.
- USC Arcadia Hospital300 W Huntington Dr, Arcadia, CA 91007 · Los Angeles CountyPhone(626) 898-8000
Source: Dmand AI Affiliation Data
Dr. Roger E. Der is affiliated with 4 sites of care and 1 medical group
Dr. Der's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. The medical group on file is Pathology Associates of Arcadia. Dmand AI also links Dr. Der to 1 more hospital and 2 other sites, each named with a free account.
Pathology Associates of Arcadia1 hospitalName with a free account2 other sitesNames with a free account
See all 5 affiliations for Dr. DerSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Roger E. Der's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Der practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| USC Arcadia Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roger E. Der is one of 1,354 pathologists in California
Anatomic pathology and clinical pathology is Dr. Der's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Der is board certified in anatomic pathology & clinical pathology by the American Board of Pathology. Dr. Der is licensed in California.
Specialties and state licenses
- Anatomic pathology and clinical pathology, CaliforniaPrimary
Pathologists near Dr. Der
Counts of pathologists 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. Roger E. Der billed Medicare for 2,198 services in 2024
CMS data shows 2,198 Medicare services from Dr. Der across 11 procedure codes in 2024, for 814 Medicare patients. Medicare paid $58,682 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 20242,198
Medicare patients814
Paid by Medicare$58,682
Procedure codes11
Dr. Der's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,3372024: 2,1986%
Dr. Der compared with the California median for pathologists, 2024
- Dr. Der
- California median
- Medicare services
- 2,198vs 1,15391% above
- Medicare patients
- 814vs 44782% above
Medians across 1,094 pathologists in California with Dmand AI profiles that report each measure.
Dr. Der'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.
Need commercial claims for Dr. Der?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Der and other pathologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Roger E. Der treated 814 Medicare patients in 2024, average age 75
CMS counts 814 Medicare patients who saw Dr. Der in 2024. The largest group is 65 to 74, with 347 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 39% are also on Medicaid. Their average risk score is 1.97, 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. Der's median patient age at 64, with 61% women.
Medicare patients, 2024814
Average age75
Average risk score1.97
Also on Medicaid39%
Dr. Der's Medicare patients by age, 2024
Dr. Der's Medicare patients by sex, 2024
- Women46657%
- Men34843%
Chronic conditions among Dr. Der's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Diabetes46%
- Ischemic heart disease37%
- Chronic kidney disease35%
- Mood disorders31%
- Heart failure28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Der's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Roger E. Der scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Der for performance year 2024, reported as part of a group. Dr. Der accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Der's MIPS scores, performance year 2024
- 100of 100Final score
- 89.4of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Roger E. Der has 1 publication on record
Dmand AI links 1 paper to Dr. Der. Dr. Der's most frequent co-author is Parakrama T. Chandrasoma, MD.
Papers1
Dr. Der's most frequent co-authors
Recent publications by Dr. Der
See who Dr. Der researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Der works with, so you can find a warm path to the right pathologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Roger E. Der received $71 in industry payments from 2019 to 2023
CMS Open Payments shows 4 general payments to Dr. Der from 4 drug and device companies from 2019 to 2023. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $28.
General payments to Dr. Der by program year, 2019 to 2023
Companies that paid Dr. Der the most, 2019 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Roger E. Der graduated from Keck School of Medicine of USC
Dr. Der graduated from Keck School of Medicine of USC in 1996.
- Medical school
- Board certified in anatomic pathology & clinical pathology
Source: Dmand AI Professional Profile Data
Dr. Roger E. Der accepts plans from 1 insurance carrier
Dr. Der is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Roger E. Der'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Roger E. Der
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. Roger E. Der's NPI number?
Dr. Roger E. Der's NPI number is 1558355156. It was assigned on September 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Roger E. Der?
Dr. Roger E. Der is a pathologist in Arcadia, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Roger E. Der practice?
Dr. Der practices at 300 W Huntington Dr, Arcadia, CA 91007. Dr. Der's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dmand AI also links Dr. Der to 1 hospital and 2 other sites.
What is Dr. Roger E. Der's office phone number?
The practice phone on file for Dr. Der is (626) 898-8000.
What is Dr. Roger E. Der's medical license number?
Dr. Der holds California license A65753.
Which hospitals is Dr. Roger E. Der affiliated with?
Dr. Der practices at USC Arcadia Hospital in Arcadia, California. Dmand AI links Dr. Der to 1 more hospital.
What medical group is Dr. Roger E. Der part of?
Dr. Der is linked to Pathology Associates of Arcadia.
Does Dr. Roger E. Der accept Medicare?
Yes. CMS data shows Dr. Der billed Medicare for 2,198 services in 2024, and Dr. Der accepts Medicare assignment.
What is Dr. Roger E. Der's MIPS score?
Dr. Der's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Roger E. Der see?
CMS counts 814 Medicare patients who saw Dr. Der in 2024, with an average age of 75.
Show 8 more questionsShow fewer questions
Is Dr. Roger E. Der board certified?
Yes. Dr. Der is board certified in anatomic pathology & clinical pathology by the American Board of Pathology.
What services does Dr. Roger E. Der bill to Medicare?
In 2024, Dr. Der's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88304) and lab and pathology test (88341).
Where did Dr. Roger E. Der go to medical school?
Dr. Der graduated from Keck School of Medicine of USC in 1996.
Has Dr. Roger E. Der received payments from drug or device companies?
CMS Open Payments shows $71 in general payments to Dr. Der from 4 companies from 2019 to 2023. The largest total came from Abbott Laboratories.
How long has Dr. Roger E. Der been practicing?
Dr. Der graduated from medical school in 1996, 30 years ago.
Does Dr. Roger E. Der do research?
Dmand AI links 1 publication to Dr. Der.
Who does Dr. Roger E. Der publish with?
Dr. Der's most frequent co-authors are Parakrama T. Chandrasoma, MD (1 shared paper).
What insurance does Dr. Roger E. Der accept?
Dr. Der is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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