Dr. Mark Y. Lee, MD

  • Long Beach, CA
  • Cardiac electrophysiologist
NPI1487943510PAC ID2668618869
Medicare services, 2024
4,527
Medicare patients, 2024
650
Part D claims, 2024
1,500
Publications
10
Clinical trials
5
Practice address
2898 Linden Ave, Long Beach, CA 90806
Practice phone
Call (562) 595-8671
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Memorial Cardiology Medical Group, Inc

Long Beach, California

See all 5 affiliations

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Dr. Mark Y. Lee is a cardiac electrophysiologist in Long Beach, California

Dr. Lee practices at Memorial Cardiology Medical Group, Inc in Long Beach, California.

Dr. Lee's NPI, 1487943510, was assigned on March 29, 2011. Dr. Lee graduated from The Robert Larner, M.D. College of Medicine in 2009. Dr. Lee holds California license 116281.

NPI and contact details
Medicare PAC ID
2668618869
NPI enumeration date
March 29, 2011
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(562) 595-8671
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
43
Medical school graduation
2009

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

Dr. Mark Y. Lee practices at Memorial Cardiology Medical Group, Inc in Long Beach, California

Dr. Lee's primary practice is Memorial Cardiology Medical Group, Inc, at 2898 Linden Ave, Long Beach, CA 90806 in Los Angeles County. The practice phone is (562) 595-8671.

  • Memorial Cardiology Medical Group, Inc
    2898 Linden Ave, Long Beach, CA 90806 · Los Angeles CountyPhone(562) 595-8671

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Mark Y. Lee is affiliated with 4 sites of care and 1 medical group

Dr. Lee's primary practice is Memorial Cardiology Medical Group, Inc in Long Beach, California. Dr. Lee is also affiliated with Long Beach Medical Center. The medical group on file is Memorial Cardiology Medical Group. Dmand AI also links Dr. Lee to 1 more hospital and 1 group practice or clinic, each named with a free account.

See all 5 affiliations for Dr. Lee

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Mark Y. 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.

EHR by site
SiteEHR vendor and product
Memorial Cardiology Medical Group, IncAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Mark Y. Lee is one of 284 cardiac electrophysiologists in California

Clinical cardiac electrophysiology is Dr. Lee's primary specialty in the NPI Registry, under taxonomy code 207RC0001X. Dr. Lee is board certified in cardiac electrophysiology by the American Board of Internal Medicine. Dmand AI has Dr. Lee's licenses on file in 2 states: California and Vermont.

Specialties and state licenses

  • Clinical cardiac electrophysiology, CaliforniaPrimaryLicense A116281 · 2011 to 2027 · taxonomy 207RC0001X
  • Vermont license2012 to 2016

Clinical focus

Dmand AI lists aneurysm, angioplasty, atrial fibrillation and flutter, cardiomyopathy, chronic hypertension, coronary artery disease, heart blockage and heart failure among the conditions Dr. Lee treats.

Cardiac electrophysiologists near Dr. Lee

Counts of cardiac electrophysiologists with a Dmand AI profile, by place and practice. Each opens the list.

284cardiac electrophysiologists in California
3cardiac electrophysiologists in Long Beach

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Mark Y. Lee billed Medicare for 4,527 services in 2024

CMS data shows 4,527 Medicare services from Dr. Lee across 38 procedure codes in 2024, for 650 Medicare patients. Medicare paid $456,963 for them.

Medicare services, 20244,527
Medicare patients650
Paid by Medicare$456,963
Procedure codes38

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

  • 2023
  • 2024
Office and hospital visits
2023: 1,8522024: 2,22520%
Tests and treatments
2023: 1,0452024: 1,43137%
Other services
2023: 652024: 491655%
Drugs given in the office
2023: 1482024: 23357%
Imaging
2023: 752024: 12769%
Surgery
2023: 272024: 2026%

Where Dr. Lee's Medicare services took place, 2024

  • In an office3,86485%
  • In a facility66315%

Dr. Lee compared with the California median for cardiac electrophysiologists, 2024

  • Dr. Lee
  • California median
Medicare services
4,527vs 2,50281% above
Medicare patients
650vs 78417% below
Part D claims
1,323vs 76373% above

Medians across 269 cardiac electrophysiologists 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.

See all procedures by Dr. Lee

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lee and other cardiac electrophysiologists in California.

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

Dr. Mark Y. Lee treated 650 Medicare patients in 2024, average age 76

CMS counts 650 Medicare patients who saw Dr. Lee in 2024. The largest group is 65 to 74, with 266 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.15, 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 69, with 46% women.

Medicare patients, 2024650
Average age76
Average risk score2.15
Also on Medicaid30%

Dr. Lee's Medicare patients by age, 2024

Dr. Lee's Medicare patients by sex, 2024

  • Women29746%
  • Men35354%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Atrial fibrillation64%
  4. Ischemic heart disease50%
  5. Arthritis45%
  6. Heart failure45%
  7. Diabetes44%
  8. Chronic kidney disease41%

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 69

Patient panel by sex, all payers

  • Women46%
  • Men54%

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

Dr. Mark Y. Lee wrote 1,500 Medicare Part D claims in 2024

In 2024, Dr. Lee wrote 1,500 Medicare Part D claims for 300 patients. 72% of them were for generic drugs. CMS names the drug for 1,323 of them, across 26 drugs with 11 or more claims each, at $488,524 in total drug cost. In 2023, CMS named 1,369 claims across 29 drugs.

Part D claims, 20241,500
Drugs named by CMS26
Total drug cost$488,524
Part D patients300

Dr. Lee's Part D claims by kind of drug, 2024

  • Generic1,075 claims72%
  • Brand-name425 claims28%

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.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,3692024: 1,3233%

Drugs named by CMS: 26 in 2024, 29 in 2023.

See all prescribing by Dr. Lee

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. Mark Y. Lee scored 87 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 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. CMS lists Dr. Lee as offering telehealth. CMS counts 33 procedures of pacemaker insertion or repair by Dr. Lee, more than 81% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Lee's MIPS scores, performance year 2024

  • 87of 100Final score
  • 70.4of 100Quality
  • 40of 100Improvement Activities
  • 73of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Lee ranks in Medicare procedure volume

Pacemaker insertion or repair
81st percentile33 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Mark Y. Lee has 10 publications on record

Dmand AI links 10 papers to Dr. Lee, published from 2011 to 2024. 2021 was the busiest year, with 2. The most frequent topics are Atrial Fibrillation and Catheter Ablation. Dr. Lee's most frequent co-authors are Andrea Natale, MD, Adrian Harry Shandling, MD and Rajesh S. Banker, MD.

Papers10
Years published2011 to 2024

Dr. Lee's papers by year, 2011 to 2024

Topics Dr. Lee writes about most

  • Atrial Fibrillation
  • Catheter Ablation

Dr. Lee's most frequent co-authors

Recent publications by Dr. Lee

See all 10 publications and co-authors

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 cardiac electrophysiologists.

How network discovery works

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

Dr. Mark Y. Lee has worked on 5 clinical trials

Dmand AI links Dr. Lee to 5 clinical trials, 3 of them phase 3 studies. 2 are still active or recruiting. Conditions studied include Atrial Fibrillation, Arrhythmias, Cardiac and Atherosclerosis. InCarda Therapeutics, Inc. sponsors the most, 2. Open Payments lists research payments to Dr. Lee that name 1 trial.

Clinical trials with Dr. Lee by phase

  1. NonePhase 1: no trials
  2. 1Phase 2: 1 trial
  3. 3Phase 3: 3 trials
  4. NonePhase 4: no trials

Conditions in Dr. Lee's trials

  • Atrial Fibrillation
  • Arrhythmias, Cardiac
  • Atherosclerosis
  • Arteriosclerosis

Investigators on the most trials with Dr. Lee

Recent clinical trials with Dr. Lee

Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Mark Y. Lee received $146,224 in industry payments from 2016 to 2025

CMS Open Payments shows 1,233 general payments to Dr. Lee from 65 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 61% of the total. Biosense Webster, Inc. paid the most, $74,296. It also lists 2 research payments totaling $26,233 in 2024, naming 1 clinical trial.

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

General payments to Dr. Lee by kind, 2016 to 2025

$146.2Kin total
  • Consulting fees$88,96261%
  • Food and beverage$32,98623%
  • Travel and lodging$18,18012%
  • Speaker and faculty fees$5,7754%
  • Other$3210%

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

Share is of all general payments to this clinician.

See all payments to Dr. Lee

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

Dr. Mark Y. Lee has 3 awards and honors on record

Dmand AI lists 3 awards for Dr. Lee, most recently Attending of the Year in 2018.

Awards and honors for Dr. Lee

  1. 2018
    • Attending of the Year
  2. 2016
    • FACC
  3. Undated
    • Assistant Clinical Professor

Source: Dmand AI Professional Profile Data

Dr. Mark Y. Lee graduated from The Robert Larner, M.D. College of Medicine

Dr. Lee graduated from The Robert Larner, M.D. College of Medicine in 2009. Dr. Lee is a member of ACC and AHA.

  1. Medical schoolThe Robert Larner, M.D. College of Medicine
  2. Board certified in cardiac electrophysiologyAmerican Board of Internal Medicine
  3. Board certified in cardiovascular diseaseAmerican Board of Internal Medicine
  4. Board certified in clinical cardiac electrophysiologyAmerican Board of Internal Medicine
  5. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Mark Y. Lee accepts plans from 13 insurance carriers

Dr. Lee is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.

Plan types Dr. Lee accepts, by number of carriers

  1. Medicare11
  2. PPO8
  3. HMO7
  4. POS4
  5. EPO3
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Mark Y. Lee'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Medicare Part D Prescribers - 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
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. Mark Y. 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. Mark Y. Lee's NPI number?

Dr. Mark Y. Lee's NPI number is 1487943510. It was assigned on March 29, 2011, and it is active in the NPI Registry.

What kind of doctor is Dr. Mark Y. Lee?

Dr. Mark Y. Lee is a cardiac electrophysiologist in Long Beach, California. The primary specialty in the NPI Registry is Clinical Cardiac Electrophysiology Physician (taxonomy code 207RC0001X).

Where does Dr. Mark Y. Lee practice?

Dr. Lee practices at 2898 Linden Ave, Long Beach, CA 90806. Dr. Lee's primary practice is Memorial Cardiology Medical Group, Inc in Long Beach, California. Dmand AI also links Dr. Lee to 1 hospital and 1 group practice or clinic.

What is Dr. Mark Y. Lee's office phone number?

The practice phone on file for Dr. Lee is (562) 595-8671.

What is Dr. Mark Y. Lee's medical license number?

Dr. Lee holds California license 116281, one of the licenses on file in 2 states.

Which states has Dr. Mark Y. Lee been licensed in?

Dmand AI has state licenses on file for Dr. Lee in California (2011 to 2027) and Vermont (2012 to 2016).

Which hospitals is Dr. Mark Y. Lee affiliated with?

Dr. Lee is affiliated with Long Beach Medical Center. Dmand AI links Dr. Lee to 1 more hospital.

What medical group is Dr. Mark Y. Lee part of?

Dr. Lee is linked to Memorial Cardiology Medical Group.

Does Dr. Mark Y. Lee accept Medicare?

Yes. CMS data shows Dr. Lee billed Medicare for 4,527 services in 2024, and Dr. Lee accepts Medicare assignment.

Does Dr. Mark Y. Lee offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Lee as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Dr. Mark Y. Lee's MIPS score?

Dr. Lee's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.

How many Medicare patients does Dr. Mark Y. Lee see?

CMS counts 650 Medicare patients who saw Dr. Lee in 2024, with an average age of 76.

Is Dr. Mark Y. Lee board certified?

Yes. Dr. Lee is board certified in cardiac electrophysiology by the American Board of Internal Medicine.

What services does Dr. Mark Y. Lee bill to Medicare?

In 2024, Dr. Lee's most billed Medicare services were care management and other visits (99457), office visit, established patient (99214) and medicare service (G2211).

Where did Dr. Mark Y. Lee go to medical school?

Dr. Lee graduated from The Robert Larner, M.D. College of Medicine in 2009.

What drugs does Dr. Mark Y. Lee prescribe most?

In 2024 Medicare Part D data, Dr. Lee's most prescribed drugs by claims were Eliquis, Metoprolol Succinate and Atorvastatin Calcium.

Has Dr. Mark Y. Lee received payments from drug or device companies?

CMS Open Payments shows $146,224 in general payments to Dr. Lee from 65 companies from 2016 to 2025. The largest total came from Biosense Webster, Inc.

How long has Dr. Mark Y. Lee been practicing?

Dr. Lee graduated from medical school in 2009, 17 years ago.

Does Dr. Mark Y. Lee do research?

Dmand AI links 10 publications to Dr. Lee, published from 2011 to 2024. Dr. Lee has worked on 5 clinical trials.

Who does Dr. Mark Y. Lee publish with?

Dr. Lee's most frequent co-authors are Andrea Natale, MD (2 shared papers), Adrian Harry Shandling, MD (2 shared papers) and Rajesh S. Banker, MD (1 shared paper).

What insurance does Dr. Mark Y. Lee accept?

Dr. Lee is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 11. Check the plan with the practice before a visit.

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