Dr. Thomas Keywon Lee, MD, PhD
- Medicare services, 2024
- 3,622
- Medicare patients, 2024
- 1,132
- Publications
- 35
- MIPS score, 2024
- 75
- Hospital affiliations
- 2
- Practice address
- 1140 West La Veta Ave, Suite 300, Orange, CA 92868
- Practice phone
- Call (949) 390-9656
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pavilion Surgery Center
Surgery Center - Medicare-Certified · Orange, 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. Thomas Keywon Lee is a pathologist in Orange, California
Dr. Lee practices at Pavilion Surgery Center in Orange, California.
Dr. Lee's NPI, 1548314313, was assigned on January 22, 2007. Dr. Lee graduated from George Washington University School of Medicine and Health Sciences in 2006. Dr. Lee holds California license A106146.
- NPI
- 1548314313NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456476464
- NPI enumeration date
- January 22, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 390-9656
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Keywon Lee practices at Pavilion Surgery Center in Orange, California
Dr. Lee's primary practice is Pavilion Surgery Center, at 1140 West La Veta Ave, Suite 300, Orange, CA 92868. The practice phone is (949) 390-9656.
- Pavilion Surgery Center1140 West La Veta Ave, Suite 300, Orange, CA 92868Phone(949) 390-9656
Source: Dmand AI Affiliation Data
Dr. Thomas Keywon Lee is affiliated with 3 sites of care and 5 medical groups
Dr. Lee's primary practice is Pavilion Surgery Center in Orange, California. Dr. Lee is also affiliated with Hoag Hospital Newport Beach. The medical group on file is UCI Health Pathology and Laboratory Services. Dmand AI also links Dr. Lee to 1 more hospital and 4 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas Keywon Lee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lee practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pavilion Surgery Center | Available with a free account |
| +2 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Keywon Lee is one of 1,354 pathologists in California
Anatomic pathology and clinical pathology is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Lee is board certified in pathology - anatomic by the American Board of Pathology. Dmand AI has Dr. Lee's licenses on file in 14 states: California, New York, Maryland, Nebraska, Ohio, Arkansas, Colorado, Iowa, Kansas, Kentucky, New Jersey, Tennessee, Washington and Pennsylvania.
Specialties and state licenses
- Anatomic pathology and clinical pathology, CaliforniaPrimary
- New York license
- Anatomic pathology, Maryland
- Nebraska license
- Ohio license
- Arkansas license
- Colorado license
- Iowa license
- Kansas license
- Kentucky license
- New Jersey license
- Tennessee license
- Washington license
- Pennsylvania license
Pathologists near Dr. Lee
Counts of pathologists 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. Thomas Keywon Lee billed Medicare for 3,622 services in 2024
CMS data shows 3,622 Medicare services from Dr. Lee across 20 procedure codes in 2024, for 1,132 Medicare patients. Medicare paid $137,728 for them.
Dr. Lee's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 3,2822024: 3,5889%
- Other services
- 2023: 422024: 3419%
Where Dr. Lee's Medicare services took place, 2024
- In an office35010%
- In a facility3,27290%
Dr. Lee compared with the California median for pathologists, 2024
- Dr. Lee
- California median
- Medicare services
- 3,622vs 1,1533.1 times
- Medicare patients
- 1,132vs 4472.5 times
Medians across 1,094 pathologists 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 pathologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Keywon Lee treated 1,132 Medicare patients in 2024, average age 76
CMS counts 1,132 Medicare patients who saw Dr. Lee in 2024. The largest group is 75 to 84, with 496 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.51, 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 63, with 56% women.
Dr. Lee's Medicare patients by age, 2024
Dr. Lee's Medicare patients by sex, 2024
- Women50044%
- Men63256%
Chronic conditions among Dr. Lee's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Cancer42%
- Ischemic heart disease37%
- Chronic kidney disease27%
- Diabetes27%
- Atrial fibrillation26%
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 63
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas Keywon Lee scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Lee for performance year 2024, reported as part of a group. Dr. Lee accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Lee's MIPS scores, performance year 2024
- 75of 100Final score
- 70of 100Quality
- 40of 100Improvement Activities
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. Thomas Keywon Lee has 35 publications on record
Dmand AI links 35 papers to Dr. Lee, published from 2003 to 2021. 2017 was the busiest year, with 3. The most frequent topics are Prostatic Neoplasms, Liver and Glutathione. Dr. Lee has published most often in Am J Surg Pathol. Dr. Lee's most frequent co-authors are Jonathan Ira Epstein, MD, Roozbeh Houshyar, MD and Jaime Landman, MD.
Dr. Lee's papers by year, 2003 to 2021
Topics Dr. Lee writes about most
- Prostatic Neoplasms
- Liver
- Glutathione
- Neoplasm Grading
- Biopsy
- Carrier Proteins
- Diagnosis, Differential
- Disease Progression
Dr. Lee's most frequent co-authors
- Jonathan Ira Epstein, MD8 shared papers
- Roozbeh Houshyar, MD3 shared papers
- Jaime Landman, MD3 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 pathologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Thomas Keywon Lee received $2,094 in industry payments from 2018 to 2022
CMS Open Payments shows 18 general payments to Dr. Lee from 8 drug and device companies from 2018 to 2022. Travel and lodging make up the largest share, 64% of the total. Ventana Medical Systems, Inc. paid the most, $1,214.
General payments to Dr. Lee by program year, 2018 to 2022
General payments to Dr. Lee by kind, 2018 to 2022
- Travel and lodging$1,34264%
- Food and beverage$75236%
Companies that paid Dr. Lee the most, 2018 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Keywon Lee graduated from George Washington University School of Medicine and Health Sciences
Dr. Lee graduated from George Washington University School of Medicine and Health Sciences in 2006.
- Medical school
- Board certified in pathology - anatomic
Source: Dmand AI Professional Profile Data
Dr. Thomas Keywon Lee accepts plans from 8 insurance carriers
Dr. Lee is in network with 8 carriers, including Excellus BlueCross BlueShield, United Healthcare and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
Plan types Dr. Lee accepts, by number of carriers
- PPO5
- Medicare4
- POS3
- EPO2
- HMO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas Keywon 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 | 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors 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-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. Thomas Keywon 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. Thomas Keywon Lee's NPI number?
Dr. Thomas Keywon Lee's NPI number is 1548314313. It was assigned on January 22, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Keywon Lee?
Dr. Thomas Keywon Lee is a pathologist in Orange, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Thomas Keywon Lee practice?
Dr. Lee practices at 1140 West La Veta Ave, Suite 300, Orange, CA 92868. Dr. Lee's primary practice is Pavilion Surgery Center in Orange, California. Dmand AI also links Dr. Lee to 1 hospital and 4 medical groups.
What is Dr. Thomas Keywon Lee's office phone number?
The practice phone on file for Dr. Lee is (949) 390-9656.
What is Dr. Thomas Keywon Lee's medical license number?
Dr. Lee holds California license A106146, one of the licenses on file in 14 states.
Which states has Dr. Thomas Keywon Lee been licensed in?
Dmand AI has state licenses on file for Dr. Lee in California (2008 to 2026), New York (2021 to 2026), Maryland (2014 to 2016), Nebraska (2014 to 2016), Ohio (2014 to 2016), Arkansas (2014 to 2015), Colorado (2014 to 2015), Iowa (2014 to 2015), Kansas (2014 to 2015), Kentucky (2014 to 2015), New Jersey (2014 to 2015), Tennessee (2009 to 2015), Washington (2010 to 2015) and Pennsylvania (2014).
Which hospitals is Dr. Thomas Keywon Lee affiliated with?
Dr. Lee is affiliated with Hoag Hospital Newport Beach. Dmand AI links Dr. Lee to 1 more hospital.
What medical group is Dr. Thomas Keywon Lee part of?
Dr. Lee is linked to UCI Health Pathology and Laboratory Services. Dmand AI links Dr. Lee to 4 more medical groups.
Does Dr. Thomas Keywon Lee accept Medicare?
Yes. CMS data shows Dr. Lee billed Medicare for 3,622 services in 2024, and Dr. Lee accepts Medicare assignment.
What is Dr. Thomas Keywon Lee's MIPS score?
Dr. Lee's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Thomas Keywon Lee see?
CMS counts 1,132 Medicare patients who saw Dr. Lee in 2024, with an average age of 76.
Is Dr. Thomas Keywon Lee board certified?
Yes. Dr. Lee is board certified in pathology - anatomic by the American Board of Pathology.
What services does Dr. Thomas Keywon Lee bill to Medicare?
In 2024, Dr. Lee's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88307).
Where did Dr. Thomas Keywon Lee go to medical school?
Dr. Lee graduated from George Washington University School of Medicine and Health Sciences in 2006.
Has Dr. Thomas Keywon Lee received payments from drug or device companies?
CMS Open Payments shows $2,094 in general payments to Dr. Lee from 8 companies from 2018 to 2022. The largest total came from Ventana Medical Systems, Inc.
How long has Dr. Thomas Keywon Lee been practicing?
Dr. Lee graduated from medical school in 2006, 20 years ago.
Does Dr. Thomas Keywon Lee do research?
Dmand AI links 35 publications to Dr. Lee, published from 2003 to 2021.
Who does Dr. Thomas Keywon Lee publish with?
Dr. Lee's most frequent co-authors are Jonathan Ira Epstein, MD (8 shared papers), Roozbeh Houshyar, MD (3 shared papers) and Jaime Landman, MD (3 shared papers).
What insurance does Dr. Thomas Keywon Lee accept?
Dr. Lee is in network with 8 carriers, including Excellus BlueCross BlueShield, United Healthcare and Blue Cross Blue Shield of Massachusetts. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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