Dr. William Mark Roberts, MD
- Publications
- 2
- Industry payments
- $158
- Insurance carriers
- 2
- State licenses
- 2
- Year NPI issued
- 2006
- Practice address
- 455 S Main St, Orange, CA 92868-3835
- Practice phone
- Call (714) 532-8636
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Roberts' 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. William Mark Roberts is a pediatric hematology and oncology physician in Orange, California
Dr. Roberts practices in Orange, California.
Dr. Roberts' NPI, 1790873578, was assigned on October 10, 2006. Dr. Roberts graduated from UMKC School of Medicine in 1982. Dr. Roberts' California license number on file is G85878.
- NPI
- 1790873578NPI Registry (opens in a new tab)
- NPI enumeration date
- October 10, 2006
- NPI status
- Active
- Practice phone
- (714) 532-8636
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. William Mark Roberts' practice address is in Orange, California
Dr. Roberts' practice address in the NPI Registry is 455 S Main St, Orange, CA 92868-3835. The practice phone is (714) 532-8636.
- NPI Registry address455 S Main St, Orange, CA 92868-3835Phone(714) 532-8636
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. William Mark Roberts' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Roberts practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Roberts' practice | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Mark Roberts is one of 385 pediatric hematologys and oncology physicians in California
Pediatric hematology-oncology is Dr. Roberts' primary specialty in the NPI Registry, under taxonomy code 2080P0207X. Dr. Roberts is board certified in pediatrics by the American Board of Pediatrics. Dmand AI has Dr. Roberts' licenses on file in 2 states: California and Louisiana.
Specialties and state licenses
- Pediatric hematology and oncology, CaliforniaPrimary
- Louisiana license
Pediatric hematologys and oncology physicians near Dr. Roberts
Counts of pediatric hematologys and oncology 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. William Mark Roberts has 2 publications on record
Dmand AI links 2 papers to Dr. Roberts in 2021. 2021 was the busiest year, with 2. The most frequent topics are COVID-19 and SARS-CoV-2. Dr. Roberts' most frequent co-authors are Julia B. Garcia-Diaz, MD and Augusto C. Ochoa, MD.
Topics Dr. Roberts writes about most
- COVID-19
- SARS-CoV-2
Dr. Roberts' most frequent co-authors
Recent publications by Dr. Roberts
See who Dr. Roberts researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Roberts works with, so you can find a warm path to the right pediatric hematologys and oncology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Mark Roberts received $158 in industry payments in 2023
CMS Open Payments shows 3 general payments to Dr. Roberts from 2 drug and device companies in 2023. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $86.
Companies that paid Dr. Roberts the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Mark Roberts graduated from UMKC School of Medicine
Dr. Roberts graduated from UMKC School of Medicine in 1982.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. William Mark Roberts accepts plans from 2 insurance carriers
Dr. Roberts is in network with 2 carriers, including Elevance and HCSC. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Elevance
- HCSC
Plan types Dr. Roberts accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. William Mark Roberts'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 |
| 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. William Mark Roberts
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. William Mark Roberts' NPI number?
Dr. William Mark Roberts' NPI number is 1790873578. It was assigned on October 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Mark Roberts?
Dr. William Mark Roberts is a pediatric hematology and oncology physician in Orange, California. The primary specialty in the NPI Registry is Pediatric Hematology & Oncology Physician (taxonomy code 2080P0207X).
Where does Dr. William Mark Roberts practice?
Dr. Roberts practices at 455 S Main St, Orange, CA 92868-3835.
What is Dr. William Mark Roberts' office phone number?
The practice phone on file for Dr. Roberts is (714) 532-8636.
What is Dr. William Mark Roberts' medical license number?
Dr. Roberts' California license number on file is G85878, one of the licenses on file in 2 states.
Which states has Dr. William Mark Roberts been licensed in?
Dmand AI has state licenses on file for Dr. Roberts in California (2000 to 2020) and Louisiana (2020 to 2024).
Is Dr. William Mark Roberts board certified?
Yes. Dr. Roberts is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. William Mark Roberts go to medical school?
Dr. Roberts graduated from UMKC School of Medicine in 1982.
Has Dr. William Mark Roberts received payments from drug or device companies?
CMS Open Payments shows $158 in general payments to Dr. Roberts from 2 companies from 2023 to 2023. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. William Mark Roberts been practicing?
Dr. Roberts graduated from medical school in 1982, 44 years ago.
Show 3 more questionsShow fewer questions
Does Dr. William Mark Roberts do research?
Dmand AI links 2 publications to Dr. Roberts.
Who does Dr. William Mark Roberts publish with?
Dr. Roberts' most frequent co-authors are Julia B. Garcia-Diaz, MD (2 shared papers) and Augusto C. Ochoa, MD (2 shared papers).
What insurance does Dr. William Mark Roberts accept?
Dr. Roberts is in network with 2 carriers, including Elevance and HCSC. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to pediatric hematology-oncology practices?
See pediatric hematologys and oncology physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card