Dr. David Jeffrey Demanes, MD
- Medicare services, 2018
- 91
- Part D claims, 2018
- 12
- Publications
- 3
- Industry payments
- $2,138
- Insurance carriers
- 1
- Practice address
- 200 Medical Plz, Los Angeles, CA 90095-0001
- Practice phone
- Call (310) 825-0128
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Demanes' professional email, personal email and mobile number
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Dr. David Jeffrey Demanes is a radiation oncologist in Los Angeles, California
Dr. Demanes practices in Los Angeles, California.
Dr. Demanes' NPI, 1407914757, was assigned on December 5, 2006. Dr. Demanes graduated from David Geffen School of Medicine at UCLA in 1974. Dr. Demanes holds California license G29678.
- NPI
- 1407914757NPI Registry (opens in a new tab)
- NPI enumeration date
- December 5, 2006
- NPI status
- Active
- Practice phone
- (310) 825-0128
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. David Jeffrey Demanes' practice address is in Los Angeles, California
Dr. Demanes' practice address in the NPI Registry is 200 Medical Plz, Los Angeles, CA 90095-0001. The practice phone is (310) 825-0128.
- NPI Registry address200 Medical Plz, Los Angeles, CA 90095-0001Phone(310) 825-0128
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. David Jeffrey Demanes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Demanes practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Demanes' practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Jeffrey Demanes is one of 685 radiation oncologists in California
Radiation oncology is Dr. Demanes' primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Demanes is board certified in internal medicine by the American Board of Internal Medicine. Dr. Demanes is licensed in California.
Specialties and state licenses
- Radiation oncology, CaliforniaPrimary
Radiation oncologists near Dr. Demanes
Counts of radiation oncologists 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. David Jeffrey Demanes billed Medicare for 91 services in 2018
CMS data shows 91 Medicare services from Dr. Demanes across 6 procedure codes in 2018. Medicare paid $6,602 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Demanes' Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 1392018: 5163%
- Imaging
- 2017: 1,0042018: 4096%
- Surgery
- 2017: 1732018: 0100%
Dr. Demanes compared with the California median for radiation oncologists, 2018
- Dr. Demanes
- California median
- Medicare services
- 91vs 1,44494% below
- Part D claims
- 12vs 3263% below
Medians across 633 radiation oncologists in California with Dmand AI profiles that report each measure.
Dr. Demanes' most billed Medicare procedure codes, 2018
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. Demanes?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Demanes and other radiation oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Jeffrey Demanes wrote 12 Medicare Part D claims in 2018
In 2018, Dr. Demanes wrote 12 Medicare Part D claims. They cover 1 drug, with $2,087 in total drug cost. In 2016, CMS named 12 claims across 1 drug.
Dr. Demanes' most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2016 to 2018
- 2016
- 2018
- Claims for drugs CMS names
- 2016: 122018: 12No change
Drugs named by CMS: 1 in 2018, 1 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. David Jeffrey Demanes has 3 publications on record
Dmand AI links 3 papers to Dr. Demanes, published from 2010 to 2014. Dr. Demanes' most frequent co-authors are Sushil Beriwal, MD, Jennifer Lynne De Los Santos, MD and I-Chow Joe Hsu, MD.
Dr. Demanes' most frequent co-authors
- Sushil Beriwal, MD1 shared paper
- Jennifer Lynne De Los Santos, MD1 shared paper
- I-Chow Joe Hsu, MD1 shared paper
Recent publications by Dr. Demanes
See who Dr. Demanes researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Demanes works with, so you can find a warm path to the right radiation oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David Jeffrey Demanes received $2,138 in industry payments in 2016
CMS Open Payments shows 3 general payments to Dr. Demanes from 1 drug or device company in 2016. Honoraria make up the largest share, 70% of the total. Elekta, Inc. paid the most, $2,138.
General payments to Dr. Demanes by kind, 2016 to 2016
- Honoraria$1,50070%
- Travel and lodging$52324%
- Food and beverage$1145%
Companies that paid Dr. Demanes the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Jeffrey Demanes has 1 award and honors on record
Dmand AI lists 1 award for Dr. Demanes, most recently Regional Top Doctor in 2014.
Awards and honors for Dr. Demanes
- 2014
- Regional Top Doctor
Source: Dmand AI Professional Profile Data
Dr. David Jeffrey Demanes graduated from David Geffen School of Medicine at UCLA
Dr. Demanes graduated from David Geffen School of Medicine at UCLA in 1974.
- Medical school
- Board certified in internal medicine
- Board certified in medical oncology
- Board certified in radiation oncology
Source: Dmand AI Professional Profile Data
Dr. David Jeffrey Demanes accepts plans from 1 insurance carrier
Dr. Demanes is in network with 1 carrier, including Elevance. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Elevance
Plan types Dr. Demanes accepts, by number of carriers
- EPO1
- HMO1
- Medicaid1
- Medicare1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. David Jeffrey Demanes'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 |
| 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. David Jeffrey Demanes
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. David Jeffrey Demanes' NPI number?
Dr. David Jeffrey Demanes' NPI number is 1407914757. It was assigned on December 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Jeffrey Demanes?
Dr. David Jeffrey Demanes is a radiation oncologist in Los Angeles, California. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. David Jeffrey Demanes practice?
Dr. Demanes practices at 200 Medical Plz, Los Angeles, CA 90095-0001.
What is Dr. David Jeffrey Demanes' office phone number?
The practice phone on file for Dr. Demanes is (310) 825-0128.
What is Dr. David Jeffrey Demanes' medical license number?
Dr. Demanes holds California license G29678.
Does Dr. David Jeffrey Demanes accept Medicare?
Yes. CMS data shows Dr. Demanes billed Medicare for 91 services in 2018.
Is Dr. David Jeffrey Demanes board certified?
Yes. Dr. Demanes is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. David Jeffrey Demanes bill to Medicare?
In 2018, Dr. Demanes' most billed Medicare services were office visit, established patient (99214), radiation oncology (77334) and office visit, established patient (99215).
Where did Dr. David Jeffrey Demanes go to medical school?
Dr. Demanes graduated from David Geffen School of Medicine at UCLA in 1974.
What drugs does Dr. David Jeffrey Demanes prescribe most?
In 2018 Medicare Part D data, Dr. Demanes' most prescribed drugs by claims were Premarin.
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Has Dr. David Jeffrey Demanes received payments from drug or device companies?
CMS Open Payments shows $2,138 in general payments to Dr. Demanes from 1 company from 2016 to 2016. The largest total came from Elekta, Inc.
How long has Dr. David Jeffrey Demanes been practicing?
Dr. Demanes graduated from medical school in 1974, 52 years ago.
Does Dr. David Jeffrey Demanes do research?
Dmand AI links 3 publications to Dr. Demanes, published from 2010 to 2014.
Who does Dr. David Jeffrey Demanes publish with?
Dr. Demanes' most frequent co-authors are Sushil Beriwal, MD (1 shared paper), Jennifer Lynne De Los Santos, MD (1 shared paper) and I-Chow Joe Hsu, MD (1 shared paper).
What insurance does Dr. David Jeffrey Demanes accept?
Dr. Demanes is in network with 1 carrier, including Elevance. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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