Dr. John S. Tran, MD
- Part D claims, 2017
- 11
- Hospital affiliations
- 1
- Industry payments
- $207
- Medical groups
- 2
- State license
- 1
- Practice address
- 455 S Main St, Orange, CA 92868
- Practice phone
- Call (714) 997-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Childrens Hospital of Orange County
Orange, California
Find Dr. Tran'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 S. Tran is a neonatologist in Orange, California
Dr. Tran practices at Childrens Hospital of Orange County in Orange, California.
Dr. Tran's NPI, 1477780864, was assigned on June 12, 2009. Dr. Tran holds California license A117003.
- NPI
- 1477780864NPI Registry (opens in a new tab)
- NPI enumeration date
- June 12, 2009
- NPI status
- Active
- Practice phone
- (714) 997-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. John S. Tran practices at Childrens Hospital of Orange County in Orange, California
Dr. Tran's primary practice is Childrens Hospital of Orange County, at 455 S Main St, Orange, CA 92868 in Orange County. The practice phone is (714) 997-3000.
- Childrens Hospital of Orange County455 S Main St, Orange, CA 92868 · Orange CountyPhone(714) 997-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John S. Tran is affiliated with 2 sites of care and 2 medical groups
Dr. Tran's primary practice is Childrens Hospital of Orange County in Orange, California. Dr. Tran is also affiliated with Rady Children's Hospital - Orange County. The medical group on file is CHOC Children's. Dmand AI also links Dr. Tran to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John S. Tran's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tran practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Childrens Hospital of Orange County | 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. John S. Tran is one of 780 neonatologists in California
Neonatal-perinatal medicine is Dr. Tran's primary specialty in the NPI Registry, under taxonomy code 2080N0001X. Dr. Tran is licensed in California.
Specialties and state licenses
- Neonatal-perinatal medicine, CaliforniaPrimary
Neonatologists near Dr. Tran
Counts of neonatologists 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 S. Tran's patients have a median age of 28
Across all payers, Dmand AI patient panel data puts Dr. Tran's median patient age at 28, with 68% women.
Dr. Tran's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 28
Patient panel by sex, all payers
- Women68%
- Men30%
Source: Dmand AI Patient Panel Data
Dr. John S. Tran wrote 11 Medicare Part D claims in 2017
In 2017, Dr. Tran wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $68 in total drug cost.
Dr. Tran's most prescribed drugs by claims, 2017
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 S. Tran received $207 in industry payments from 2019 to 2025
CMS Open Payments shows 5 general payments to Dr. Tran from 4 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Mallinckrodt Enterprises LLC paid the most, $139.
General payments to Dr. Tran by program year, 2019 to 2025
Companies that paid Dr. Tran the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John S. Tran'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 DataDmand AI Org Hierarchy Data |
| 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 S. Tran
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 S. Tran's NPI number?
Dr. John S. Tran's NPI number is 1477780864. It was assigned on June 12, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. John S. Tran?
Dr. John S. Tran is a neonatologist in Orange, California. The primary specialty in the NPI Registry is Neonatal-Perinatal Medicine Physician (taxonomy code 2080N0001X).
Where does Dr. John S. Tran practice?
Dr. Tran practices at 455 S Main St, Orange, CA 92868. Dr. Tran's primary practice is Childrens Hospital of Orange County in Orange, California. Dmand AI also links Dr. Tran to 1 medical group.
What is Dr. John S. Tran's office phone number?
The practice phone on file for Dr. Tran is (714) 997-3000.
What is Dr. John S. Tran's medical license number?
Dr. Tran holds California license A117003.
Which hospitals is Dr. John S. Tran affiliated with?
Dr. Tran is affiliated with Rady Children's Hospital - Orange County.
What medical group is Dr. John S. Tran part of?
Dr. Tran is linked to CHOC Children's. Dmand AI links Dr. Tran to 1 more medical group.
What drugs does Dr. John S. Tran prescribe most?
In 2017 Medicare Part D data, Dr. Tran's most prescribed drugs by claims were Warfarin Sodium.
Has Dr. John S. Tran received payments from drug or device companies?
CMS Open Payments shows $207 in general payments to Dr. Tran from 4 companies from 2019 to 2025. The largest total came from Mallinckrodt Enterprises LLC.
How long has Dr. John S. Tran been practicing?
Dr. Tran's NPI was assigned in 2009.
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