Dr. Justin Youngjin Choi, MD
- Medicare services, 2023
- 31
- Medicare patients, 2024
- 18
- Part D claims, 2024
- 369
- Hospital affiliations
- 2
- Industry payments
- $409
- Practice address
- 3330 Lomita Blvd, Torrance, CA 90509
- Practice phone
- Call (310) 325-9110
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Choi'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. Justin Youngjin Choi is an internist in Torrance, California
Dr. Choi practices at Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System.
Dr. Choi's NPI, 1235472267, was assigned on March 28, 2013. Dr. Choi graduated from Loma Linda University School of Medicine in 2013. Dr. Choi holds California license A148592.
- NPI
- 1235472267NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678874831
- NPI enumeration date
- March 28, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 325-9110
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Justin Youngjin Choi practices at Torrance Memorial Medical Center in Torrance, California
Dr. Choi's primary practice is Torrance Memorial Medical Center, at 3330 Lomita Blvd, Torrance, CA 90509 in Los Angeles County. The practice phone is (310) 325-9110.
- Torrance Memorial Medical Center3330 Lomita Blvd, Torrance, CA 90509 · Los Angeles CountyPhone(310) 325-9110
Source: Dmand AI Affiliation Data
Dr. Justin Youngjin Choi is affiliated with 2 sites of care and 1 medical group
Dr. Choi's primary practice is Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System. Dr. Choi is also affiliated with Providence Little Company of Mary Medical Center Torrance. The medical group on file is Optum - Downtown Los Angeles.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Justin Youngjin Choi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Choi practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Torrance Memorial Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Justin Youngjin Choi is one of 16,751 internists in California
Internal medicine is Dr. Choi's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Choi is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Choi
Counts of internists 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. Justin Youngjin Choi billed Medicare for 31 services in 2023
CMS data shows 31 Medicare services from Dr. Choi across 1 procedure code in 2023, for 18 Medicare patients. Medicare paid $3,059 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Choi's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 282023: 3111%
Dr. Choi compared with the California median for internists, 2023
- Dr. Choi
- California median
- Medicare services
- 31vs 36191% below
- Medicare patients
- 18vs 15188% below
- Part D claims
- 124vs 42171% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Choi's most billed Medicare procedure codes, 2023
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Justin Youngjin Choi treated 18 Medicare patients in 2024, average age 80
CMS counts 18 Medicare patients who saw Dr. Choi in 2024. The largest group is under 65, with 0 patients. 75% of them have diabetes, and 75% have high blood pressure. Their average risk score is 2.03, 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. Choi's median patient age at 77, with 56% women.
Dr. Choi's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Choi's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease67%
Share of Medicare patients with each condition. A patient can have several.
Dr. Choi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Justin Youngjin Choi wrote 369 Medicare Part D claims in 2024
In 2024, Dr. Choi wrote 369 Medicare Part D claims for 196 patients. 88% of them were for generic drugs. CMS names the drug for 124 of them, across 7 drugs with 11 or more claims each, at $7,417 in total drug cost. In 2023, CMS named 121 claims across 7 drugs.
Dr. Choi's Part D claims by kind of drug, 2024
- Generic323 claims88%
- Brand-name and other46 claims12%
Dr. Choi's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Choi's Part D claims, 2024
- Opioids9%32 of 369 claims
- Antibiotics31%113 of 369 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1212024: 1242%
Drugs named by CMS: 7 in 2024, 7 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Justin Youngjin Choi takes part in Medicare
Dr. Choi accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Justin Youngjin Choi received $409 in industry payments from 2017 to 2025
CMS Open Payments shows 15 general payments to Dr. Choi from 7 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $117.
General payments to Dr. Choi by program year, 2017 to 2025
Companies that paid Dr. Choi the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Justin Youngjin Choi graduated from Loma Linda University School of Medicine
Dr. Choi graduated from Loma Linda University School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Justin Youngjin Choi'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Justin Youngjin Choi
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. Justin Youngjin Choi's NPI number?
Dr. Justin Youngjin Choi's NPI number is 1235472267. It was assigned on March 28, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Justin Youngjin Choi?
Dr. Justin Youngjin Choi is an internist in Torrance, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Justin Youngjin Choi practice?
Dr. Choi practices at 3330 Lomita Blvd, Torrance, CA 90509. Dr. Choi's primary practice is Torrance Memorial Medical Center in Torrance, California, part of Cedars-Sinai Health System.
What is Dr. Justin Youngjin Choi's office phone number?
The practice phone on file for Dr. Choi is (310) 325-9110.
What is Dr. Justin Youngjin Choi's medical license number?
Dr. Choi holds California license A148592.
Which hospitals is Dr. Justin Youngjin Choi affiliated with?
Dr. Choi practices at Torrance Memorial Medical Center in Torrance, California. Dr. Choi is also affiliated with Providence Little Company of Mary Medical Center Torrance.
What medical group is Dr. Justin Youngjin Choi part of?
Dr. Choi is linked to Optum - Downtown Los Angeles.
Does Dr. Justin Youngjin Choi accept Medicare?
Yes. CMS data shows Dr. Choi billed Medicare for 31 services in 2023, and Dr. Choi accepts Medicare assignment.
How many Medicare patients does Dr. Justin Youngjin Choi see?
CMS counts 18 Medicare patients who saw Dr. Choi in 2024, with an average age of 80.
What services does Dr. Justin Youngjin Choi bill to Medicare?
In 2023, Dr. Choi's most billed Medicare services were hospital inpatient care (99233).
Show 4 more questionsShow fewer questions
Where did Dr. Justin Youngjin Choi go to medical school?
Dr. Choi graduated from Loma Linda University School of Medicine in 2013.
What drugs does Dr. Justin Youngjin Choi prescribe most?
In 2024 Medicare Part D data, Dr. Choi's most prescribed drugs by claims were Cefdinir, Hydrocodone-Acetaminophen and Amoxicillin-Clavulanate Potass.
Has Dr. Justin Youngjin Choi received payments from drug or device companies?
CMS Open Payments shows $409 in general payments to Dr. Choi from 7 companies from 2017 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Justin Youngjin Choi been practicing?
Dr. Choi graduated from medical school in 2013, 13 years ago.
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