Dr. John Robert Webster, DO
- Medicare services, 2024
- 301
- Medicare patients, 2024
- 102
- Part D claims, 2024
- 3,468
- Publications
- 1
- Industry payments
- $1,933
- Practice address
- 7117 Brockton Ave, Riverside, CA 92506
- Practice phone
- Call (951) 683-6370
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverside Medical Clinic - Brockton/Riverside
Riverside, California
Find Dr. Webster'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. John Robert Webster is an endocrinologist in Riverside, California
Dr. Webster practices at Riverside Medical Clinic - Brockton/Riverside in Riverside, California.
Dr. Webster's NPI, 1093240178, was assigned on April 26, 2017. Dr. Webster graduated from WesternU College of Osteopathic Medicine of the Pacific in 2017. Dr. Webster's California license number on file is 20A17018.
- NPI
- 1093240178NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446584072
- NPI enumeration date
- April 26, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (951) 683-6370
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Robert Webster practices at Riverside Medical Clinic - Brockton/Riverside in Riverside, California
Dr. Webster's primary practice is Riverside Medical Clinic - Brockton/Riverside, at 7117 Brockton Ave, Riverside, CA 92506 in Riverside County. The practice phone is (951) 683-6370.
- Riverside Medical Clinic - Brockton/Riverside7117 Brockton Ave, Riverside, CA 92506 · Riverside CountyPhone(951) 683-6370
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Robert Webster is affiliated with 2 sites of care and 1 medical group
Dr. Webster's primary practice is Riverside Medical Clinic - Brockton/Riverside in Riverside, California. The medical group on file is Riverside Medical Clinic. Dmand AI also links Dr. Webster to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Robert Webster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Webster practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Medical Clinic - Brockton/Riverside | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Robert Webster is one of 1,062 endocrinologists in California
Endocrinology, diabetes and metabolism is Dr. Webster's primary specialty in the NPI Registry, under taxonomy code 207RE0101X. Dr. Webster is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine. Dmand AI has Dr. Webster's licenses on file in 2 states: California and Arizona.
Specialties and state licenses
- Endocrinology, diabetes and metabolism, CaliforniaPrimary
- Arizona license
Clinical focus
Dmand AI lists chronic diabetes, diabetic emergency, enlarged thyroid, hypercalcemia, obesity, osteoporosis and underactive thyroid among the conditions Dr. Webster treats.
Endocrinologists near Dr. Webster
Counts of endocrinologists 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. John Robert Webster billed Medicare for 301 services in 2024
CMS data shows 301 Medicare services from Dr. Webster across 6 procedure codes in 2024, for 102 Medicare patients. Medicare paid $21,386 for them. Every service was in an office.
Dr. Webster's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 992024: 18587%
- Other services
- 2023: 02024: 94
- Tests and treatments
- 2023: 02024: 22
Dr. Webster compared with the California median for endocrinologists, 2024
- Dr. Webster
- California median
- Medicare services
- 301vs 67555% below
- Medicare patients
- 102vs 24057% below
- Part D claims
- 3,130vs 1,1042.8 times
Medians across 994 endocrinologists in California with Dmand AI profiles that report each measure.
Dr. Webster'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. Webster?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Webster and other endocrinologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Robert Webster treated 102 Medicare patients in 2024, average age 70
CMS counts 102 Medicare patients who saw Dr. Webster in 2024. The largest group is 65 to 74, with 43 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 33% are also on Medicaid. Their average risk score is 1.75, 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. Webster's median patient age at 61, with 68% women.
Dr. Webster's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Webster's Medicare patients by sex, 2024
- Women6463%
- Men3837%
Chronic conditions among Dr. Webster's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes64%
- Chronic kidney disease40%
- Arthritis37%
- Mood disorders32%
- Depression31%
- Ischemic heart disease21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Webster's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women68%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Robert Webster wrote 3,468 Medicare Part D claims in 2024
In 2024, Dr. Webster wrote 3,468 Medicare Part D claims for 422 patients. 51% of them were for generic drugs. CMS names the drug for 3,130 of them, across 42 drugs with 11 or more claims each, at $1,265,825 in total drug cost. In 2023, CMS named 1,522 claims across 34 drugs.
Dr. Webster's Part D claims by kind of drug, 2024
- Generic1,772 claims51%
- Brand-name1,513 claims44%
- Other183 claims5%
Dr. Webster'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,5222024: 3,130106%
Drugs named by CMS: 42 in 2024, 34 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. John Robert Webster offers telehealth to Medicare patients
Dr. Webster accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Webster as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Robert Webster has 1 publication on record
Dmand AI links 1 paper to Dr. Webster in 2023. Dr. Webster's most frequent co-authors are Brandon Edward Chock, MD and Mina Maximous, DO.
Dr. Webster's most frequent co-authors
- Brandon Edward Chock, MD1 shared paper
- Mina Maximous, DO1 shared paper
Recent publications by Dr. Webster
See who Dr. Webster researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Webster works with, so you can find a warm path to the right endocrinologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Robert Webster received $1,933 in industry payments from 2021 to 2025
CMS Open Payments shows 82 general payments to Dr. Webster from 27 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 99% of the total. Novo Nordisk Inc paid the most, $307.
General payments to Dr. Webster by program year, 2021 to 2025
General payments to Dr. Webster by kind, 2021 to 2025
- Food and beverage$1,91399%
- Education$201%
Companies that paid Dr. Webster the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Robert Webster graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Webster graduated from WesternU College of Osteopathic Medicine of the Pacific in 2017.
- Medical school
- Board certified in endocrinology, diabetes and metabolism
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John Robert Webster accepts plans from 7 insurance carriers
Dr. Webster is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- CMS Medicare
Plan types Dr. Webster accepts, by number of carriers
- Medicare7
- PPO5
- HMO4
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. John Robert Webster'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. John Robert Webster
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. John Robert Webster's NPI number?
Dr. John Robert Webster's NPI number is 1093240178. It was assigned on April 26, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. John Robert Webster?
Dr. John Robert Webster is an endocrinologist in Riverside, California. The primary specialty in the NPI Registry is Endocrinology, Diabetes & Metabolism Physician (taxonomy code 207RE0101X).
Where does Dr. John Robert Webster practice?
Dr. Webster practices at 7117 Brockton Ave, Riverside, CA 92506. Dr. Webster's primary practice is Riverside Medical Clinic - Brockton/Riverside in Riverside, California. Dmand AI also links Dr. Webster to 1 group practice or clinic.
What is Dr. John Robert Webster's office phone number?
The practice phone on file for Dr. Webster is (951) 683-6370.
What is Dr. John Robert Webster's medical license number?
Dr. Webster's California license number on file is 20A17018, one of the licenses on file in 2 states.
Which states has Dr. John Robert Webster been licensed in?
Dmand AI has state licenses on file for Dr. Webster in California (2019 to 2025) and Arizona (since 2022).
What medical group is Dr. John Robert Webster part of?
Dr. Webster is linked to Riverside Medical Clinic.
Does Dr. John Robert Webster accept Medicare?
Yes. CMS data shows Dr. Webster billed Medicare for 301 services in 2024, and Dr. Webster accepts Medicare assignment.
Does Dr. John Robert Webster offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Webster as offering telehealth services.
How many Medicare patients does Dr. John Robert Webster see?
CMS counts 102 Medicare patients who saw Dr. Webster in 2024, with an average age of 70.
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Is Dr. John Robert Webster board certified?
Yes. Dr. Webster is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine.
What services does Dr. John Robert Webster bill to Medicare?
In 2024, Dr. Webster's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, established patient (99215).
Where did Dr. John Robert Webster go to medical school?
Dr. Webster graduated from WesternU College of Osteopathic Medicine of the Pacific in 2017.
What drugs does Dr. John Robert Webster prescribe most?
In 2024 Medicare Part D data, Dr. Webster's most prescribed drugs by claims were Ozempic, Metformin HCl and Glipizide.
Has Dr. John Robert Webster received payments from drug or device companies?
CMS Open Payments shows $1,933 in general payments to Dr. Webster from 27 companies from 2021 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. John Robert Webster been practicing?
Dr. Webster graduated from medical school in 2017, 9 years ago.
Does Dr. John Robert Webster do research?
Dmand AI links 1 publication to Dr. Webster.
Who does Dr. John Robert Webster publish with?
Dr. Webster's most frequent co-authors are Brandon Edward Chock, MD (1 shared paper) and Mina Maximous, DO (1 shared paper).
What insurance does Dr. John Robert Webster accept?
Dr. Webster is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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