Dr. Diem Kieu Thi Tran, MD

  • Loma Linda, CA
  • Neurosurgeon
NPI1790168987PAC ID8123327251
Medicare services, 2024
24
Medicare patients, 2024
22
Part D claims, 2018
36
Publications
22
MIPS score, 2024
89
Practice address
11234 Anderson St, Loma Linda, CA 92354
Practice phone
Call (909) 558-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Loma Linda University Medical Center

Hospital · Loma Linda, California

See all 5 affiliations

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Dr. Diem Kieu Thi Tran is a neurosurgeon in Loma Linda, California

Dr. Tran practices at Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church.

Dr. Tran's NPI, 1790168987, was assigned on July 7, 2015. Dr. Tran graduated from University of Utah School of Medicine in 2014. Dr. Tran's Washington license number on file is MD61135447.

NPI and contact details
Medicare PAC ID
8123327251
NPI enumeration date
July 7, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(909) 558-4000
Professional email
Get email
Personal email
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Mobile number
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Sex
Female
Estimated age
38
Medical school graduation
2014

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Diem Kieu Thi Tran practices at Loma Linda University Medical Center in Loma Linda, California

Dr. Tran's primary practice is Loma Linda University Medical Center, at 11234 Anderson St, Loma Linda, CA 92354 in San Bernardino County. The practice phone is (909) 558-4000.

Source: Dmand AI Affiliation Data

Dr. Diem Kieu Thi Tran is affiliated with 3 sites of care and 2 medical groups

Dr. Tran's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Tran to 2 more group practices and clinics and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Tran

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Diem Kieu Thi Tran's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tran practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Loma Linda University Medical CenterAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dmand AI maps EHR vendors, IT decision makers and buying committees across Seventh-day Adventist Church and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Diem Kieu Thi Tran is one of 846 neurosurgeons in California

Neurological surgery is Dr. Tran's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Tran is board certified in neurological surgery by the American Board of Neurological Surgery. Dmand AI has Dr. Tran's licenses on file in 2 states: Washington and California.

Specialties and state licenses

  • Neurological surgery, WashingtonPrimaryLicense MD61135447 · 2021 to 2023 · taxonomy 207T00000X
  • California license2015 to 2025

Clinical focus

Dmand AI lists lower back pain, neck pain and spine problems and thoracic spine disorders among the conditions Dr. Tran treats.

Neurosurgeons near Dr. Tran

Counts of neurosurgeons 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. Diem Kieu Thi Tran billed Medicare for 24 services in 2024

CMS data shows 24 Medicare services from Dr. Tran across 1 procedure code in 2024, for 22 Medicare patients. Medicare paid $4,019 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202424
Medicare patients22
Paid by Medicare$4,019
Procedure codes1

Dr. Tran's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 472024: 2449%

Dr. Tran compared with the California median for neurosurgeons, 2024

  • Dr. Tran
  • California median
Medicare services
24vs 21689% below
Medicare patients
22vs 15486% below
Part D claims
36vs 2638% above

Medians across 679 neurosurgeons in California with Dmand AI profiles that report each measure.

Dr. Tran'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.

See all procedures by Dr. Tran

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tran and other neurosurgeons in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Diem Kieu Thi Tran treated 22 Medicare patients in 2024, average age 68

CMS counts 22 Medicare patients who saw Dr. Tran in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.21, 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. Tran's median patient age at 15, with 45% women.

Medicare patients, 202422
Average age68
Average risk score2.21

Chronic conditions among Dr. Tran's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Stroke or TIA75%
  4. Arthritis50%
  5. Diabetes50%

Share of Medicare patients with each condition. A patient can have several.

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 15

Patient panel by sex, all payers

  • Women45%
  • Men55%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Diem Kieu Thi Tran wrote 36 Medicare Part D claims in 2018

In 2018, Dr. Tran wrote 36 Medicare Part D claims. Every claim was for a generic drug. They cover 3 drugs, with $1,079 in total drug cost. In 2017, CMS named 81 claims across 5 drugs.

Part D claims, 201836
Drugs named by CMS3
Total drug cost$1,079

Dr. Tran's most prescribed drugs by claims, 2018

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, 2017 to 2018

  • 2017
  • 2018
Claims for drugs CMS names
2017: 812018: 3656%

Drugs named by CMS: 3 in 2018, 5 in 2017.

See all prescribing by Dr. Tran

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

Dr. Diem Kieu Thi Tran scored 89 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Tran for performance year 2024, reported as part of a group. Dr. Tran accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Tran's MIPS scores, performance year 2024

  • 89of 100Final score
  • 72.1of 100Quality
  • 80of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 77of 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

For MedTech and pharma teams

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Dr. Diem Kieu Thi Tran has 22 publications on record

Dmand AI links 22 papers to Dr. Tran, published from 2013 to 2022. 2017 was the busiest year, with 4. The most frequent topics are Brain Injuries, Traumatic, Drug Resistant Epilepsy and Hematoma, Subdural, Chronic. Dr. Tran has published most often in World Neurosurg. Dr. Tran's most frequent co-authors are Jefferson William Chen, MD, PhD, Sumeet Vadera, MD and Frank Pk Hsu, MD.

Papers22
Years published2013 to 2022

Dr. Tran's papers by year, 2013 to 2022

Topics Dr. Tran writes about most

  • Brain Injuries, Traumatic
  • Drug Resistant Epilepsy
  • Hematoma, Subdural, Chronic
  • Magnetic Resonance Imaging
  • Adenoma
  • Drainage
  • Family
  • Patient Education as Topic

Dr. Tran's most frequent co-authors

Recent publications by Dr. Tran

See all 22 publications and co-authors

See who Dr. Tran researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tran works with, so you can find a warm path to the right neurosurgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Diem Kieu Thi Tran received $1,218 in industry payments from 2016 to 2025

CMS Open Payments shows 19 general payments to Dr. Tran from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Integra LifeSciences Corporation paid the most, $484.

General payments to Dr. Tran by program year, 2016 to 2025

Companies that paid Dr. Tran the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Tran

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Diem Kieu Thi Tran graduated from University of Utah School of Medicine

Dr. Tran graduated from University of Utah School of Medicine in 2014. Dr. Tran is a member of AANS and CNS.

  1. Medical schoolUniversity of Utah School of Medicine
  2. Board certified in neurological surgeryAmerican Board of Neurological Surgery

Source: Dmand AI Professional Profile Data

Dr. Diem Kieu Thi Tran accepts plans from 8 insurance carriers

Dr. Tran is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Molina
  • Regence Health Plans
  • AK State Medicaid
  • CMS Medicare

Plan types Dr. Tran accepts, by number of carriers

  1. Medicare7
  2. PPO5
  3. HMO3
  4. POS2
  5. EPO1
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Diem Kieu Thi Tran's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Diem Kieu Thi 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. Diem Kieu Thi Tran's NPI number?

Dr. Diem Kieu Thi Tran's NPI number is 1790168987. It was assigned on July 7, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Diem Kieu Thi Tran?

Dr. Diem Kieu Thi Tran is a neurosurgeon in Loma Linda, California. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).

Where does Dr. Diem Kieu Thi Tran practice?

Dr. Tran practices at 11234 Anderson St, Loma Linda, CA 92354. Dr. Tran's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church. Dmand AI also links Dr. Tran to 2 group practices and clinics and 1 medical group.

What is Dr. Diem Kieu Thi Tran's office phone number?

The practice phone on file for Dr. Tran is (909) 558-4000.

What is Dr. Diem Kieu Thi Tran's medical license number?

Dr. Tran's Washington license number on file is MD61135447, one of the licenses on file in 2 states.

Which states has Dr. Diem Kieu Thi Tran been licensed in?

Dmand AI has state licenses on file for Dr. Tran in Washington (2021 to 2023) and California (2015 to 2025).

Which hospitals is Dr. Diem Kieu Thi Tran affiliated with?

Dr. Tran practices at Loma Linda University Medical Center in Loma Linda, California.

What medical group is Dr. Diem Kieu Thi Tran part of?

Dr. Tran is linked to Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI links Dr. Tran to 1 more medical group.

Does Dr. Diem Kieu Thi Tran accept Medicare?

Yes. CMS data shows Dr. Tran billed Medicare for 24 services in 2024, and Dr. Tran accepts Medicare assignment.

What is Dr. Diem Kieu Thi Tran's MIPS score?

Dr. Tran's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Diem Kieu Thi Tran see?

CMS counts 22 Medicare patients who saw Dr. Tran in 2024, with an average age of 68.

Is Dr. Diem Kieu Thi Tran board certified?

Yes. Dr. Tran is board certified in neurological surgery by the American Board of Neurological Surgery.

What services does Dr. Diem Kieu Thi Tran bill to Medicare?

In 2024, Dr. Tran's most billed Medicare services were critical care (99291).

Where did Dr. Diem Kieu Thi Tran go to medical school?

Dr. Tran graduated from University of Utah School of Medicine in 2014.

What drugs does Dr. Diem Kieu Thi Tran prescribe most?

In 2018 Medicare Part D data, Dr. Tran's most prescribed drugs by claims were Atorvastatin Calcium, Levetiracetam and Levothyroxine Sodium.

Has Dr. Diem Kieu Thi Tran received payments from drug or device companies?

CMS Open Payments shows $1,218 in general payments to Dr. Tran from 6 companies from 2016 to 2025. The largest total came from Integra LifeSciences Corporation.

How long has Dr. Diem Kieu Thi Tran been practicing?

Dr. Tran graduated from medical school in 2014, 12 years ago.

Does Dr. Diem Kieu Thi Tran do research?

Dmand AI links 22 publications to Dr. Tran, published from 2013 to 2022.

Who does Dr. Diem Kieu Thi Tran publish with?

Dr. Tran's most frequent co-authors are Jefferson William Chen, MD, PhD (10 shared papers), Sumeet Vadera, MD (8 shared papers) and Frank Pk Hsu, MD (6 shared papers).

What insurance does Dr. Diem Kieu Thi Tran accept?

Dr. Tran is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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