Dr. John Ellsworth Osborne, MD
- Medicare services, 2018
- 31
- Part D claims, 2016
- 13
- Industry payments
- $69
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 820 N Diamond Bar Blvd, Diamond Bar, CA 91765
- Practice phone
- Call (909) 788-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Osborne's professional email, personal email and mobile number
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Dr. John Ellsworth Osborne is an emergency medicine physician in Diamond Bar, California
Dr. Osborne practices in Diamond Bar, California.
Dr. Osborne's NPI, 1912013194, was assigned on August 21, 2006. Dr. Osborne holds California license G42163.
- NPI
- 1912013194NPI Registry (opens in a new tab)
- NPI enumeration date
- August 21, 2006
- NPI status
- Active
- Practice phone
- (909) 788-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John Ellsworth Osborne's practice address is in Diamond Bar, California
Dr. Osborne's practice address in the NPI Registry is 820 N Diamond Bar Blvd, Diamond Bar, CA 91765, in Los Angeles County. The practice phone is (909) 788-3000.
- NPI Registry address820 N Diamond Bar Blvd, Diamond Bar, CA 91765 · Los Angeles CountyPhone(909) 788-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John Ellsworth Osborne's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Osborne practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Osborne's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Ellsworth Osborne is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Osborne's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Osborne is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Osborne
Counts of emergency medicine 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. John Ellsworth Osborne billed Medicare for 31 services in 2018
CMS data shows 31 Medicare services from Dr. Osborne across 2 procedure codes in 2018. Medicare paid $2,781 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Osborne's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 1462018: 1788%
- Tests and treatments
- 2017: 922018: 1485%
Dr. Osborne compared with the California median for emergency medicine physicians, 2018
- Dr. Osborne
- California median
- Medicare services
- 31vs 26588% below
- Part D claims
- 13vs 6279% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Osborne's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Osborne and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Ellsworth Osborne's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Osborne's median patient age at 74, with 50% women.
Dr. Osborne's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. John Ellsworth Osborne wrote 13 Medicare Part D claims in 2016
In 2016, Dr. Osborne wrote 13 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $120 in total drug cost.
Dr. Osborne's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. John Ellsworth Osborne received $69 in industry payments from 2016 to 2024
CMS Open Payments shows 4 general payments to Dr. Osborne from 3 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Portola Pharmaceuticals, LLC paid the most, $32.
General payments to Dr. Osborne by program year, 2016 to 2024
Companies that paid Dr. Osborne the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Ellsworth Osborne'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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| 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. John Ellsworth Osborne
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 Ellsworth Osborne's NPI number?
Dr. John Ellsworth Osborne's NPI number is 1912013194. It was assigned on August 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Ellsworth Osborne?
Dr. John Ellsworth Osborne is an emergency medicine physician in Diamond Bar, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. John Ellsworth Osborne practice?
Dr. Osborne practices at 820 N Diamond Bar Blvd, Diamond Bar, CA 91765.
What is Dr. John Ellsworth Osborne's office phone number?
The practice phone on file for Dr. Osborne is (909) 788-3000.
What is Dr. John Ellsworth Osborne's medical license number?
Dr. Osborne holds California license G42163.
Does Dr. John Ellsworth Osborne accept Medicare?
Yes. CMS data shows Dr. Osborne billed Medicare for 31 services in 2018.
What services does Dr. John Ellsworth Osborne bill to Medicare?
In 2018, Dr. Osborne's most billed Medicare services were emergency department visit (99285) and heart test or procedure (93010).
What drugs does Dr. John Ellsworth Osborne prescribe most?
In 2016 Medicare Part D data, Dr. Osborne's most prescribed drugs by claims were Cephalexin.
Has Dr. John Ellsworth Osborne received payments from drug or device companies?
CMS Open Payments shows $69 in general payments to Dr. Osborne from 3 companies from 2016 to 2024. The largest total came from Portola Pharmaceuticals, LLC.
How long has Dr. John Ellsworth Osborne been practicing?
Dr. Osborne's NPI was assigned in 2006.
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