J Magn Reson Imaging
Dr. Robert Ward Hagar, MD
- Medicare services, 2024
- 278
- Medicare patients, 2024
- 38
- Part D claims, 2024
- 191
- Publications
- 8
- Clinical trials
- 1
- Practice address
- 747 52nd Street, Oakland, CA 94609
- Practice phone
- Call (510) 428-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hagar'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. Robert Ward Hagar is an internist in Oakland, California
Dr. Hagar practices at UCSF Benioff Children's Hospital Oakland in Oakland, California, part of University of California Health.
Dr. Hagar's NPI, 1760549182, was assigned on January 3, 2007. Dr. Hagar graduated from UVA School of Medicine in 1983. Dr. Hagar holds California license G53126.
- NPI
- 1760549182NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749179950
- NPI enumeration date
- January 3, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 428-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Ward Hagar practices at UCSF Benioff Children's Hospital Oakland in Oakland, California
Dr. Hagar's primary practice is UCSF Benioff Children's Hospital Oakland, at 747 52nd Street, Oakland, CA 94609 in Alameda County. The practice phone is (510) 428-3000.
- UCSF Benioff Children's Hospital Oakland747 52nd Street, Oakland, CA 94609 · Alameda CountyPhone(510) 428-3000
Source: Dmand AI Affiliation Data
Dr. Robert Ward Hagar is affiliated with 4 sites of care and 3 medical groups
Dr. Hagar's primary practice is UCSF Benioff Children's Hospital Oakland in Oakland, California, part of University of California Health. Dr. Hagar is also affiliated with Alta Bates Summit Medical Center. The medical group on file is UCSF Medical Group. Dmand AI also links Dr. Hagar to 1 more hospital, 2 medical groups and 1 school health center, 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. Robert Ward Hagar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hagar practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Benioff Children's Hospital Oakland | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Ward Hagar is one of 16,751 internists in California
Internal medicine is Dr. Hagar's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hagar is board certified in internal medicine by the American Board of Internal Medicine. Dr. Hagar is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists fibromyalgia and chronic pain among the conditions Dr. Hagar treats.
Internists near Dr. Hagar
Counts of internists 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. Robert Ward Hagar billed Medicare for 278 services in 2024
CMS data shows 278 Medicare services from Dr. Hagar across 3 procedure codes in 2024, for 38 Medicare patients. Medicare paid $20,627 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hagar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1512024: 19730%
- Other services
- 2023: 02024: 81
Dr. Hagar compared with the California median for internists, 2024
- Dr. Hagar
- California median
- Medicare services
- 278vs 36123% below
- Medicare patients
- 38vs 15175% below
- Part D claims
- 107vs 42175% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Hagar'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. Hagar?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hagar and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Ward Hagar treated 38 Medicare patients in 2024, average age 47
CMS counts 38 Medicare patients who saw Dr. Hagar in 2024. 32% of them have anxiety, and 32% have chronic kidney disease. Their average risk score is 3.83, 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. Hagar's median patient age at 40, with 50% women.
Dr. Hagar's Medicare patients by sex, 2024
- Women2361%
- Men1539%
Chronic conditions among Dr. Hagar's Medicare patients, 2024
- Anxiety32%
- Chronic kidney disease32%
- High blood pressure32%
- Asthma29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hagar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women50%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert Ward Hagar wrote 191 Medicare Part D claims in 2024
In 2024, Dr. Hagar wrote 191 Medicare Part D claims for 24 patients. 92% of them were for generic drugs. CMS names the drug for 107 of them, across 6 drugs with 11 or more claims each, at $1,894 in total drug cost. In 2023, CMS named 92 claims across 6 drugs.
Dr. Hagar's Part D claims by kind of drug, 2024
- Generic175 claims92%
- Brand-name16 claims8%
Dr. Hagar'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. Hagar's Part D claims, 2024
- Opioids43%82 of 191 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: 922024: 10716%
Drugs named by CMS: 6 in 2024, 6 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
Dr. Robert Ward Hagar scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Hagar for performance year 2024, reported as part of a group. Dr. Hagar accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hagar as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Hagar's MIPS scores, performance year 2024
- 87of 100Final score
- 86.8of 100Quality
- 40of 100Improvement Activities
- 70of 100Cost
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. Robert Ward Hagar has 8 publications on record
Dmand AI links 8 papers to Dr. Hagar, published from 2007 to 2023. 2022 was the busiest year, with 2. The most frequent topics are Anemia, Sickle Cell, Blood Transfusion and Dietary Supplements. Dr. Hagar has published most often in Br J Haematol. Dr. Hagar's most frequent co-authors are Augusta J. Saulys, MD, Elliott P. Vichinsky, MD and Gregory Howard Kurio, MD.
Dr. Hagar's papers by year, 2007 to 2023
Topics Dr. Hagar writes about most
- Anemia, Sickle Cell
- Blood Transfusion
- Dietary Supplements
- Glutamine
- Hypertension, Pulmonary
- Melanoma
- Neoplasm Regression, Spontaneous
- Skin Neoplasms
Dr. Hagar's most frequent co-authors
- Augusta J. Saulys, MD2 shared papers
- Elliott P. Vichinsky, MD2 shared papers
- Gregory Howard Kurio, MD1 shared paper
Recent publications by Dr. Hagar
Complement Ther Med
Arch Dermatol
See who Dr. Hagar researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hagar works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert Ward Hagar has worked on 1 clinical trial
Dmand AI links Dr. Hagar to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Anemia, Sickle Cell and Anemia, Hemolytic, Congenital.
Conditions in Dr. Hagar's trials
- Anemia, Sickle Cell
- Anemia, Hemolytic, Congenital
Investigators on the most trials with Dr. Hagar
- Henny H. Billett, MD1 shared trial
- Spero R. Cataland, MD1 shared trial
- Payal Chandarana Desai, MD1 shared trial
Recent clinical trials with Dr. Hagar
Sickle Cell Disease and CardiovAscular Risk - Red Cell Exchange Trial (SCD-CARRE) (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Robert Ward Hagar received $83,090 in industry payments from 2016 to 2025
CMS Open Payments shows 61 general payments to Dr. Hagar from 12 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 70% of the total. Novartis Pharmaceuticals Corporation paid the most, $57,907.
General payments to Dr. Hagar by program year, 2016 to 2025
General payments to Dr. Hagar by kind, 2016 to 2025
- Consulting fees$57,82570%
- Travel and lodging$18,88423%
- Speaker and faculty fees$4,6206%
- Food and beverage$1,7612%
Companies that paid Dr. Hagar the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Ward Hagar graduated from UVA School of Medicine
Dr. Hagar graduated from UVA School of Medicine in 1983.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Robert Ward Hagar accepts plans from 10 insurance carriers
Dr. Hagar is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +2 more carriersWith a free account
Plan types Dr. Hagar accepts, by number of carriers
- Medicare7
- PPO7
- HMO3
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert Ward Hagar'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)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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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 |
| 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. Robert Ward Hagar
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. Robert Ward Hagar's NPI number?
Dr. Robert Ward Hagar's NPI number is 1760549182. It was assigned on January 3, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Ward Hagar?
Dr. Robert Ward Hagar is an internist in Oakland, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robert Ward Hagar practice?
Dr. Hagar practices at 747 52nd Street, Oakland, CA 94609. Dr. Hagar's primary practice is UCSF Benioff Children's Hospital Oakland in Oakland, California, part of University of California Health. Dmand AI also links Dr. Hagar to 1 hospital, 2 medical groups and 1 school health center.
What is Dr. Robert Ward Hagar's office phone number?
The practice phone on file for Dr. Hagar is (510) 428-3000.
What is Dr. Robert Ward Hagar's medical license number?
Dr. Hagar holds California license G53126.
Which hospitals is Dr. Robert Ward Hagar affiliated with?
Dr. Hagar practices at UCSF Benioff Children's Hospital Oakland in Oakland, California. Dr. Hagar is also affiliated with Alta Bates Summit Medical Center. Dmand AI links Dr. Hagar to 1 more hospital.
What medical group is Dr. Robert Ward Hagar part of?
Dr. Hagar is linked to UCSF Medical Group. Dmand AI links Dr. Hagar to 2 more medical groups.
Does Dr. Robert Ward Hagar accept Medicare?
Yes. CMS data shows Dr. Hagar billed Medicare for 278 services in 2024, and Dr. Hagar accepts Medicare assignment.
Does Dr. Robert Ward Hagar offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Hagar as offering telehealth services.
What is Dr. Robert Ward Hagar's MIPS score?
Dr. Hagar's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Robert Ward Hagar see?
CMS counts 38 Medicare patients who saw Dr. Hagar in 2024, with an average age of 47.
Is Dr. Robert Ward Hagar board certified?
Yes. Dr. Hagar is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Robert Ward Hagar bill to Medicare?
In 2024, Dr. Hagar's most billed Medicare services were office visit, established patient (99215), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Robert Ward Hagar go to medical school?
Dr. Hagar graduated from UVA School of Medicine in 1983.
What drugs does Dr. Robert Ward Hagar prescribe most?
In 2024 Medicare Part D data, Dr. Hagar's most prescribed drugs by claims were Hydroxyurea, Hydrocodone-Acetaminophen and Hydromorphone HCl.
Has Dr. Robert Ward Hagar received payments from drug or device companies?
CMS Open Payments shows $83,090 in general payments to Dr. Hagar from 12 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Robert Ward Hagar been practicing?
Dr. Hagar graduated from medical school in 1983, 43 years ago.
Does Dr. Robert Ward Hagar do research?
Dmand AI links 8 publications to Dr. Hagar, published from 2007 to 2023. Dr. Hagar has worked on 1 clinical trial.
Who does Dr. Robert Ward Hagar publish with?
Dr. Hagar's most frequent co-authors are Augusta J. Saulys, MD (2 shared papers), Elliott P. Vichinsky, MD (2 shared papers) and Gregory Howard Kurio, MD (1 shared paper).
What insurance does Dr. Robert Ward Hagar accept?
Dr. Hagar is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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