Dr. Karen A. Tong, MD

  • Loma Linda, CA
  • Diagnostic radiologist
NPI1649296641PAC ID2264594324
Medicare services, 2024
422
Medicare patients, 2024
352
Publications
18
MIPS score, 2024
89
Hospital affiliations
2
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

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Dr. Karen A. Tong is a diagnostic radiologist in Loma Linda, California

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

Dr. Tong's NPI, 1649296641, was assigned on July 14, 2006. Dr. Tong graduated from University of British Columbia in 1990. Dr. Tong holds California license G71966.

NPI and contact details
Medicare PAC ID
2264594324
NPI enumeration date
July 14, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(909) 558-4000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
62
Medical school graduation
1990

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

Dr. Karen A. Tong practices at Loma Linda University Medical Center in Loma Linda, California

Dr. Tong'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. Karen A. Tong is affiliated with 2 sites of care and 1 medical group

Dr. Tong's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church. Dr. Tong is also affiliated with Providence St. Mary Medical Center. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG).

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

Dmand AI tracks the EHR system at Dr. Karen A. Tong's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tong practices, 2 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
+1 more affiliated siteAvailable 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. Karen A. Tong is one of 4,096 diagnostic radiologists in California

Diagnostic radiology is Dr. Tong's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Tong is board certified in diagnostic radiology by the American Board of Radiology. Dmand AI has Dr. Tong's licenses on file in 2 states: California and Utah.

Specialties and state licenses

  • Diagnostic radiology, CaliforniaPrimaryLicense G71966 · 1991 to 2026 · taxonomy 2085R0202X
  • Utah license1993 to 2022

Diagnostic radiologists near Dr. Tong

Counts of diagnostic radiologists 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. Karen A. Tong billed Medicare for 422 services in 2024

CMS data shows 422 Medicare services from Dr. Tong across 10 procedure codes in 2024, for 352 Medicare patients. Medicare paid $19,018 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024422
Medicare patients352
Paid by Medicare$19,018
Procedure codes10

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

  • 2023
  • 2024
Imaging
2023: 4312024: 4222%

Dr. Tong compared with the California median for diagnostic radiologists, 2024

  • Dr. Tong
  • California median
Medicare services
422vs 2,28181% below
Medicare patients
352vs 1,34674% below

Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.

Dr. Tong'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. Tong

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

Dr. Karen A. Tong treated 352 Medicare patients in 2024, average age 72

CMS counts 352 Medicare patients who saw Dr. Tong in 2024. The largest group is 65 to 74, with 130 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 44% are also on Medicaid. Their average risk score is 2.05, 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. Tong's median patient age at 52, with 55% women.

Medicare patients, 2024352
Average age72
Average risk score2.05
Also on Medicaid44%

Dr. Tong's Medicare patients by age, 2024

Dr. Tong's Medicare patients by sex, 2024

  • Women20659%
  • Men14641%

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

  1. High blood pressure75%
  2. High cholesterol72%
  3. Arthritis62%
  4. Diabetes43%
  5. Stroke or TIA37%
  6. Ischemic heart disease35%
  7. Mood disorders35%
  8. Chronic kidney disease34%

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

Dr. Tong's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 52

Patient panel by sex, all payers

  • Women55%
  • Men44%

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

Dr. Karen A. Tong 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. Tong for performance year 2024, reported as part of a group. Dr. Tong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Tong'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

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Dr. Karen A. Tong has 18 publications on record

Dmand AI links 18 papers to Dr. Tong, published from 2004 to 2021. 2014 was the busiest year, with 4. The most frequent topics are Brain, Brain Injuries and Magnetic Resonance Imaging. Dr. Tong has published most often in J Neurotrauma. Dr. Tong's most frequent co-authors are Stephen Ashwal, MD, Jill V. Hunter, MBBS and Stanley Barnes, MD.

Papers18
Years published2004 to 2021

Dr. Tong's papers by year, 2004 to 2021

Topics Dr. Tong writes about most

  • Brain
  • Brain Injuries
  • Magnetic Resonance Imaging
  • Diffusion Tensor Imaging
  • Image Interpretation, Computer-Assisted
  • Magnetic Resonance Spectroscopy
  • Brain Diseases
  • Brain Injuries, Traumatic

Dr. Tong's most frequent co-authors

Recent publications by Dr. Tong

See all 18 publications and co-authors

See who Dr. Tong researches with

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

How network discovery works

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

Dr. Karen A. Tong received $17 in industry payments in 2022

CMS Open Payments shows 1 general payment to Dr. Tong from 1 drug or device company in 2022. Food and beverage make up the largest share, 100% of the total. Viz.ai, Inc. paid the most, $17.

Companies that paid Dr. Tong the most, 2022 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Tong

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

Dr. Karen A. Tong graduated from University of British Columbia

Dr. Tong graduated from University of British Columbia in 1990.

  1. Medical schoolUniversity of British Columbia
  2. Board certified in diagnostic radiologyAmerican Board of Radiology

Source: Dmand AI Professional Profile Data

Dr. Karen A. Tong accepts plans from 4 insurance carriers

Dr. Tong is in network with 4 carriers, including Excellus BlueCross BlueShield, CMS Medicare and Molina. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.

  • Excellus BlueCross BlueShield
  • CMS Medicare
  • Molina
  • NV State Medicaid

Plan types Dr. Tong accepts, by number of carriers

  1. Medicare3
  2. EPO1
  3. HMO1
  4. Medicaid1
  5. POS1
  6. PPO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Karen A. Tong'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)
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. Karen A. Tong

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. Karen A. Tong's NPI number?

Dr. Karen A. Tong's NPI number is 1649296641. It was assigned on July 14, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Karen A. Tong?

Dr. Karen A. Tong is a diagnostic radiologist in Loma Linda, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).

Where does Dr. Karen A. Tong practice?

Dr. Tong practices at 11234 Anderson St, Loma Linda, CA 92354. Dr. Tong's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church.

What is Dr. Karen A. Tong's office phone number?

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

What is Dr. Karen A. Tong's medical license number?

Dr. Tong holds California license G71966, one of the licenses on file in 2 states.

Which states has Dr. Karen A. Tong been licensed in?

Dmand AI has state licenses on file for Dr. Tong in California (1991 to 2026) and Utah (1993 to 2022).

Which hospitals is Dr. Karen A. Tong affiliated with?

Dr. Tong practices at Loma Linda University Medical Center in Loma Linda, California. Dr. Tong is also affiliated with Providence St. Mary Medical Center.

What medical group is Dr. Karen A. Tong part of?

Dr. Tong is linked to Loma Linda University Faculty Medical Group (LLUFMG).

Does Dr. Karen A. Tong accept Medicare?

Yes. CMS data shows Dr. Tong billed Medicare for 422 services in 2024, and Dr. Tong accepts Medicare assignment.

What is Dr. Karen A. Tong's MIPS score?

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

Show 9 more questionsShow fewer questions

How many Medicare patients does Dr. Karen A. Tong see?

CMS counts 352 Medicare patients who saw Dr. Tong in 2024, with an average age of 72.

Is Dr. Karen A. Tong board certified?

Yes. Dr. Tong is board certified in diagnostic radiology by the American Board of Radiology.

What services does Dr. Karen A. Tong bill to Medicare?

In 2024, Dr. Tong's most billed Medicare services were diagnostic imaging (70450), diagnostic imaging (70553) and diagnostic imaging (70498).

Where did Dr. Karen A. Tong go to medical school?

Dr. Tong graduated from University of British Columbia in 1990.

Has Dr. Karen A. Tong received payments from drug or device companies?

CMS Open Payments shows $17 in general payments to Dr. Tong from 1 company from 2022 to 2022. The largest total came from Viz.ai, Inc.

How long has Dr. Karen A. Tong been practicing?

Dr. Tong graduated from medical school in 1990, 36 years ago.

Does Dr. Karen A. Tong do research?

Dmand AI links 18 publications to Dr. Tong, published from 2004 to 2021.

Who does Dr. Karen A. Tong publish with?

Dr. Tong's most frequent co-authors are Stephen Ashwal, MD (9 shared papers), Jill V. Hunter, MBBS (2 shared papers) and Stanley Barnes, MD (1 shared paper).

What insurance does Dr. Karen A. Tong accept?

Dr. Tong is in network with 4 carriers, including Excellus BlueCross BlueShield, CMS Medicare and Molina. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.

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