Dr. John Sungwon Lee, MD
- Medicare services, 2024
- 154
- Medicare patients, 2024
- 107
- Part D claims, 2024
- 425
- Publications
- 11
- Hospital affiliations
- 2
- Practice address
- 21950 Copley Dr, Diamond Bar, CA 91765
- Practice phone
- Call (626) 840-1023
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Call the Car
Diamond Bar, California
Find Dr. Lee'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 Sungwon Lee is a sleep medicine (internal medicine) physician in Diamond Bar, California
Dr. Lee practices at Call the Car in Diamond Bar, California.
Dr. Lee's NPI, 1497041883, was assigned on June 23, 2011. Dr. Lee graduated from Loma Linda University School Of Medicine in 2010. Dr. Lee holds California license A123119.
- NPI
- 1497041883NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698995421
- NPI enumeration date
- June 23, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (626) 840-1023
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Sungwon Lee practices at Call the Car in Diamond Bar, California
Dr. Lee's primary practice is Call the Car, at 21950 Copley Dr, Diamond Bar, CA 91765 in Los Angeles County. The practice phone is (626) 840-1023.
- Call the Car21950 Copley Dr, Diamond Bar, CA 91765 · Los Angeles CountyPhone(626) 840-1023
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Sungwon Lee is affiliated with 6 sites of care and 8 medical groups
Dr. Lee's primary practice is Call the Car in Diamond Bar, California. Dr. Lee is also affiliated with Dignity Health - St. Mary Medical Center. The medical group on file is Hennepin Healthcare. Dmand AI also links Dr. Lee to 1 more hospital, 7 medical groups, 1 physician office, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Sungwon Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Call the Car | Available with a free account |
| +5 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John Sungwon Lee is one of 115 sleep medicine (internal medicine) physicians in California
Internal medicine is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207RS0012X. The record also lists sleep medicine. Dr. Lee is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Lee's licenses on file in 15 states: California, Florida, Ohio, Tennessee, Georgia, Illinois, Minnesota, Missouri, North Carolina, Pennsylvania, Texas, Washington, Alabama, Arizona and Delaware.
Specialties and state licenses
- Sleep medicine (internal medicine), CaliforniaPrimary
- Florida license
- Ohio license
- Tennessee license
- Georgia license
- Illinois license
- Minnesota license
- Missouri license
- North Carolina license
- Pennsylvania license
- Texas license
- Washington license
- Alabama license
- Arizona license
- Delaware license
Clinical focus
Dmand AI lists chronic diabetes, chronic hypertension and chronic kidney disease among the conditions Dr. Lee treats.
Sleep medicine (internal medicine) physicians near Dr. Lee
Counts of sleep medicine (internal 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 Sungwon Lee billed Medicare for 154 services in 2024
CMS data shows 154 Medicare services from Dr. Lee across 3 procedure codes in 2024, for 107 Medicare patients. Medicare paid $15,828 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lee's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 562024: 154175%
Dr. Lee compared with the California median for sleep medicine (internal medicine) physicians, 2024
- Dr. Lee
- California median
- Medicare services
- 154vs 45466% below
- Medicare patients
- 107vs 25558% below
- Part D claims
- 209vs 12469% above
Medians across 111 sleep medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.
Dr. Lee'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.
Need commercial claims for Dr. Lee?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lee and other sleep medicine (internal medicine) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Sungwon Lee treated 107 Medicare patients in 2024, average age 68
CMS counts 107 Medicare patients who saw Dr. Lee in 2024. The largest group is 65 to 74, with 49 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 4.20, 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. Lee's median patient age at 67, with 48% women.
Dr. Lee's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lee's Medicare patients by sex, 2024
- Women5350%
- Men5450%
Chronic conditions among Dr. Lee's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes72%
- Heart failure65%
- Chronic kidney disease58%
- Arthritis57%
- Ischemic heart disease56%
- Mood disorders48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lee's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Sungwon Lee wrote 425 Medicare Part D claims in 2024
In 2024, Dr. Lee wrote 425 Medicare Part D claims for 250 patients. 92% of them were for generic drugs. CMS names the drug for 209 of them, across 11 drugs with 11 or more claims each, at $692 in total drug cost. In 2023, CMS named 107 claims across 5 drugs.
Dr. Lee's Part D claims by kind of drug, 2024
- Generic389 claims92%
- Brand-name and other36 claims8%
Dr. Lee'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. Lee's Part D claims, 2024
- Antibiotics31%130 of 425 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: 1072024: 20995%
Drugs named by CMS: 11 in 2024, 5 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
Dr. John Sungwon Lee offers telehealth to Medicare patients
Dr. Lee accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lee as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. John Sungwon Lee has 11 publications on record
Dmand AI links 11 papers to Dr. Lee, published from 2015 to 2025. 2023 was the busiest year, with 4. The most frequent topics are Antibodies, Viral, COVID-19 and Vaccination. Dr. Lee has published most often in bioRxiv. Dr. Lee's most frequent co-authors are Joel Nee-Lartley Blankson, MD, Christopher Caputo, MD and Annukka A. Antar, MD, PhD.
Dr. Lee's papers by year, 2015 to 2025
Topics Dr. Lee writes about most
- Antibodies, Viral
- COVID-19
- Vaccination
- Antibodies, Neutralizing
- Antibody Formation
- COVID-19 Vaccines
- mRNA Vaccines
- SARS-CoV-2
Dr. Lee's most frequent co-authors
- Joel Nee-Lartley Blankson, MD3 shared papers
- Christopher Caputo, MD3 shared papers
- Annukka A. Antar, MD, PhD2 shared papers
Recent publications by Dr. Lee
See who Dr. Lee researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lee works with, so you can find a warm path to the right sleep medicine (internal medicine) physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Sungwon Lee received $301 in industry payments from 2016 to 2022
CMS Open Payments shows 9 general payments to Dr. Lee from 6 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 89% of the total. Olympus Corporation of the Americas paid the most, $148.
General payments to Dr. Lee by program year, 2016 to 2022
General payments to Dr. Lee by kind, 2016 to 2022
- Food and beverage$26989%
- Travel and lodging$3211%
Companies that paid Dr. Lee the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Sungwon Lee graduated from Loma Linda University School Of Medicine
Dr. Lee graduated from Loma Linda University School Of Medicine in 2010. Dr. Lee is a member of AASM.
- Medical school
- Board certified in internal medicine
- Board certified in sleep medicine
- Board certified in obesity medicine
Source: Dmand AI Professional Profile Data
Dr. John Sungwon Lee accepts plans from 17 insurance carriers
Dr. Lee is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Cigna. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Cigna
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Regence Health Plans
- +9 more carriersWith a free account
Plan types Dr. Lee accepts, by number of carriers
- Medicare9
- PPO9
- HMO6
- POS5
- EPO3
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. John Sungwon Lee'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. John Sungwon Lee
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 Sungwon Lee's NPI number?
Dr. John Sungwon Lee's NPI number is 1497041883. It was assigned on June 23, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. John Sungwon Lee?
Dr. John Sungwon Lee is a sleep medicine (internal medicine) physician in Diamond Bar, California. The primary specialty in the NPI Registry is Sleep Medicine (Internal Medicine) Physician (taxonomy code 207RS0012X).
Where does Dr. John Sungwon Lee practice?
Dr. Lee practices at 21950 Copley Dr, Diamond Bar, CA 91765. Dr. Lee's primary practice is Call the Car in Diamond Bar, California. Dmand AI also links Dr. Lee to 1 hospital, 7 medical groups, 1 physician office, 1 group practice or clinic and 1 home health agency.
What is Dr. John Sungwon Lee's office phone number?
The practice phone on file for Dr. Lee is (626) 840-1023.
What is Dr. John Sungwon Lee's medical license number?
Dr. Lee holds California license A123119, one of the licenses on file in 15 states.
Which states has Dr. John Sungwon Lee been licensed in?
Dmand AI has state licenses on file for Dr. Lee in California (2012 to 2026), Florida (2022 to 2027), Ohio (2025 to 2027), Tennessee (2025 to 2027), Georgia (2025 to 2026), Illinois (2023 to 2026), Minnesota (2021 to 2026), Missouri (2023 to 2026), North Carolina (2022 to 2026), Pennsylvania (2022 to 2026), Texas (2023 to 2026), Washington (2023 to 2026), Alabama (2023 to 2025), Arizona (2019 to 2025) and Delaware (2022 to 2025).
Which hospitals is Dr. John Sungwon Lee affiliated with?
Dr. Lee is affiliated with Dignity Health - St. Mary Medical Center. Dmand AI links Dr. Lee to 1 more hospital.
What medical group is Dr. John Sungwon Lee part of?
Dr. Lee is linked to Hennepin Healthcare. Dmand AI links Dr. Lee to 7 more medical groups.
Does Dr. John Sungwon Lee accept Medicare?
Yes. CMS data shows Dr. Lee billed Medicare for 154 services in 2024, and Dr. Lee accepts Medicare assignment.
Does Dr. John Sungwon Lee offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lee as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. John Sungwon Lee see?
CMS counts 107 Medicare patients who saw Dr. Lee in 2024, with an average age of 68.
Is Dr. John Sungwon Lee board certified?
Yes. Dr. Lee is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. John Sungwon Lee bill to Medicare?
In 2024, Dr. Lee's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99232).
Where did Dr. John Sungwon Lee go to medical school?
Dr. Lee graduated from Loma Linda University School Of Medicine in 2010.
What drugs does Dr. John Sungwon Lee prescribe most?
In 2024 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Amoxicillin, Chlorhexidine Gluconate and Amoxicillin-Clavulanate Potass.
Has Dr. John Sungwon Lee received payments from drug or device companies?
CMS Open Payments shows $301 in general payments to Dr. Lee from 6 companies from 2016 to 2022. The largest total came from Olympus Corporation of the Americas.
How long has Dr. John Sungwon Lee been practicing?
Dr. Lee graduated from medical school in 2010, 16 years ago.
Does Dr. John Sungwon Lee do research?
Dmand AI links 11 publications to Dr. Lee, published from 2015 to 2025.
Who does Dr. John Sungwon Lee publish with?
Dr. Lee's most frequent co-authors are Joel Nee-Lartley Blankson, MD (3 shared papers), Christopher Caputo, MD (3 shared papers) and Annukka A. Antar, MD, PhD (2 shared papers).
What insurance does Dr. John Sungwon Lee accept?
Dr. Lee is in network with 17 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Cigna. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See sleep medicine (internal medicine) physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card