Dr. Madhu J. John, MD
- Industry payments
- $71
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 4945 W Cypress Ave, Visalia, CA 93277
- Practice phone
- Call (559) 624-3100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advanced Radiation Oncology Services
Multi-specialty group site · Visalia, California
Find Dr. John'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. Madhu J. John is a radiation oncologist in Fresno, California
Dr. John practices at Advanced Radiation Oncology Services in Visalia, California.
Dr. John's NPI, 1588639702, was assigned on February 21, 2006. Dr. John holds California license A34579.
- NPI
- 1588639702NPI Registry (opens in a new tab)
- NPI enumeration date
- February 21, 2006
- NPI status
- Active
- Practice phone
- (559) 624-3100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Madhu J. John practices in Visalia and Fresno
Dr. John's primary practice is Advanced Radiation Oncology Services, at 4945 W Cypress Ave, Visalia, CA 93277. The practice phone is (559) 624-3100. The NPI Registry lists Dr. John's practice address as 7130 N Millbrook Ave, Fresno, CA 93720-3347.
- Advanced Radiation Oncology ServicesPrimary4945 W Cypress Ave, Visalia, CA 93277Phone(559) 624-3100
- NPI Registry address7130 N Millbrook Ave, Fresno, CA 93720-3347Phone(559) 450-5500
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Madhu J. John is affiliated with 2 sites of care and 1 medical group
Dr. John's primary practice is Advanced Radiation Oncology Services in Visalia, California. Dmand AI also links Dr. John to 1 physician office and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Madhu J. John's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. John practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advanced Radiation Oncology Services | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Madhu J. John is one of 685 radiation oncologists in California
Radiation oncology is Dr. John's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. John is licensed in California.
Specialties and state licenses
- Radiation oncology, CaliforniaPrimary
Radiation oncologists near Dr. John
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. Madhu J. John's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. John's median patient age at 67, with 100% women.
Dr. John's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Madhu J. John received $71 in industry payments from 2016 to 2022
CMS Open Payments shows 3 general payments to Dr. John from 3 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Brainlab, Inc. paid the most, $44.
General payments to Dr. John by program year, 2016 to 2022
Companies that paid Dr. John the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Madhu J. John'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Madhu J. John
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. Madhu J. John's NPI number?
Dr. Madhu J. John's NPI number is 1588639702. It was assigned on February 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Madhu J. John?
Dr. Madhu J. John is a radiation oncologist in Fresno, California. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Madhu J. John practice?
Dr. John practices at 4945 W Cypress Ave, Visalia, CA 93277. Dr. John also practices at 7130 N Millbrook Ave, Fresno, CA 93720-3347. Dr. John's primary practice is Advanced Radiation Oncology Services in Visalia, California. Dmand AI also links Dr. John to 1 physician office and 1 medical group.
What is Dr. Madhu J. John's office phone number?
The practice phone on file for Dr. John is (559) 624-3100.
What is Dr. Madhu J. John's medical license number?
Dr. John holds California license A34579.
Has Dr. Madhu J. John received payments from drug or device companies?
CMS Open Payments shows $71 in general payments to Dr. John from 3 companies from 2016 to 2022. The largest total came from Brainlab, Inc.
How long has Dr. Madhu J. John been practicing?
Dr. John's NPI was assigned in 2006.
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