Dr. Guy Gerard Lemire, MD

  • Long Beach, CA
  • Cardiothoracic surgeon
NPI1689632614
Medicare services, 2024
27
Medicare patients, 2024
16
Publications
14
Industry payments
$1,454
Affiliated sites
1
Practice address
1050 Linden Ave, Long Beach, CA 90813
Practice phone
Call (562) 531-2550
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCI Health - Lakewood

Long Beach, California

See all 2 affiliations

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Dr. Guy Gerard Lemire is a cardiothoracic surgeon in Long Beach, California

Dr. Lemire practices at UCI Health - Lakewood in Long Beach, California.

Dr. Lemire's NPI, 1689632614, was assigned on May 1, 2006. Dr. Lemire graduated from University of Laval Faculty of Medicine in 1967. Dr. Lemire holds California license A31562.

NPI and contact details
NPI enumeration date
May 1, 2006
NPI status
Active
Practice phone
(562) 531-2550
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
85
Medical school graduation
1967

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

Dr. Guy Gerard Lemire practices at UCI Health - Lakewood in Long Beach, California

Dr. Lemire's primary practice is UCI Health - Lakewood, at 1050 Linden Ave, Long Beach, CA 90813 in Los Angeles County. The practice phone is (562) 531-2550.

  • UCI Health - Lakewood
    1050 Linden Ave, Long Beach, CA 90813 · Los Angeles CountyPhone(562) 531-2550

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

Dr. Guy Gerard Lemire is affiliated with 2 sites of care

Dr. Lemire's primary practice is UCI Health - Lakewood in Long Beach, California. Dmand AI also links Dr. Lemire to 1 physician office, named with a free account.

UCI Health - LakewoodLong Beach, CaliforniaPrimary
1 physician officeName with a free account
See all 2 affiliations for Dr. Lemire

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

Dmand AI tracks the EHR system at Dr. Guy Gerard Lemire's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lemire practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCI Health - LakewoodAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Guy Gerard Lemire is one of 568 cardiothoracic surgeons in California

Thoracic surgery (cardiothoracic vascular surgery) is Dr. Lemire's primary specialty in the NPI Registry, under taxonomy code 208G00000X. Dr. Lemire is board certified in cvt surgery by the ROYAL COLLEGE OF PHYSICIANS & SURGEONS(C). Dmand AI has Dr. Lemire's licenses on file in 15 states: California, South Dakota, Arkansas, South Carolina, Georgia, Maine, North Carolina, North Dakota, Oklahoma, Tennessee, Texas, Wyoming, Alabama, Indiana and Utah.

Specialties and state licenses

  • Thoracic surgery (cardiothoracic vascular surgery), CaliforniaPrimaryLicense A31562 · 1996 to 2026 · taxonomy 208G00000X
  • South Dakota license
  • Arkansas license2009 to 2027
  • South Carolina license2012 to 2027
  • Georgia license2008 to 2026
  • Maine license2007 to 2026
  • North Carolina license2012 to 2026
  • North Dakota license2012 to 2026
  • Oklahoma license2008 to 2026
  • Tennessee license2009 to 2026
  • Texas license2011 to 2026
  • Wyoming license2008 to 2026
  • Alabama license2011 to 2025
  • Indiana license2007 to 2025
  • Utah license2007 to 2024

Cardiothoracic surgeons near Dr. Lemire

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

568cardiothoracic surgeons in California
8cardiothoracic surgeons in Long Beach

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

Dr. Guy Gerard Lemire billed Medicare for 27 services in 2024

CMS data shows 27 Medicare services from Dr. Lemire across 2 procedure codes in 2024, for 16 Medicare patients. Medicare paid $4,199 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202427
Medicare patients16
Paid by Medicare$4,199
Procedure codes2

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

  • 2023
  • 2024
Surgery
2023: 332024: 2718%

Dr. Lemire compared with the California median for cardiothoracic surgeons, 2024

  • Dr. Lemire
  • California median
Medicare services
27vs 11476% below
Medicare patients
16vs 9583% below

Medians across 453 cardiothoracic surgeons in California with Dmand AI profiles that report each measure.

Dr. Lemire'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. Lemire

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

Dr. Guy Gerard Lemire treated 16 Medicare patients in 2024, average age 72

CMS counts 16 Medicare patients who saw Dr. Lemire in 2024. The largest group is 85 and over, with 0 patients. 75% of them have diabetes, and 75% have heart failure. Their average risk score is 2.29, 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. Lemire's median patient age at 62, with 0% women.

Medicare patients, 202416
Average age72
Average risk score2.29

Dr. Lemire's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

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

  1. Diabetes75%
  2. Heart failure75%
  3. High blood pressure75%
  4. High cholesterol75%
  5. Ischemic heart disease75%

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

Dr. Lemire's patients across all payers

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

Patient panel by age, all payers

Median age 62

Patient panel by sex, all payers

  • Women0%
  • Men100%

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

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Dr. Guy Gerard Lemire has 14 publications on record

Dmand AI links 14 papers to Dr. Lemire. The most frequent topics are Cattle, Dogs and Postoperative Complications. Dr. Lemire has published most often in Can J Surg. Dr. Lemire's most frequent co-author is Judith L. Trudel, MD.

Papers14

Topics Dr. Lemire writes about most

  • Cattle
  • Dogs
  • Postoperative Complications
  • Transplantation, Homologous
  • Angiography
  • Aorta, Abdominal
  • Blood Pressure
  • Blood Vessel Prosthesis

Dr. Lemire's most frequent co-authors

Recent publications by Dr. Lemire

See all 14 publications and co-authors

See who Dr. Lemire researches with

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

How network discovery works

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

Dr. Guy Gerard Lemire received $1,454 in industry payments from 2016 to 2023

CMS Open Payments shows 15 general payments to Dr. Lemire from 10 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 98% of the total. Edwards Lifesciences Corporation paid the most, $331.

General payments to Dr. Lemire by program year, 2016 to 2023

General payments to Dr. Lemire by kind, 2016 to 2023

$1.5Kin total
  • Food and beverage$1,42498%
  • Education$302%

Companies that paid Dr. Lemire the most, 2016 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Lemire

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

Dr. Guy Gerard Lemire has 1 award and honors on record

Dmand AI lists 1 award for Dr. Lemire.

Awards and honors for Dr. Lemire

  1. Undated
    • ACS Fellow

Source: Dmand AI Professional Profile Data

Dr. Guy Gerard Lemire graduated from University of Laval Faculty of Medicine

Dr. Lemire graduated from University of Laval Faculty of Medicine in 1967. Dr. Lemire is a member of ACS, Royal College of Physicians and Surgeons of Canada and STS.

  1. Medical schoolUniversity of Laval Faculty of Medicine
  2. Board certified in cvt surgeryROYAL COLLEGE OF PHYSICIANS & SURGEONS(C)

Source: Dmand AI Professional Profile Data

Dr. Guy Gerard Lemire accepts plans from 9 insurance carriers

Dr. Lemire is in network with 9 carriers, including United Healthcare, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.

  • United Healthcare
  • Elevance
  • Blue Cross Blue Shield of Massachusetts
  • Blue Cross Blue Shield of Michigan
  • HCSC
  • Regence Health Plans
  • Aspirus Health Plan
  • Blue Cross and Blue Shield of Kansas City
  • +1 more carriersWith a free account

Plan types Dr. Lemire accepts, by number of carriers

  1. Medicare6
  2. PPO6
  3. EPO2
  4. HMO2
  5. POS2

Source: Dmand AI Insurance Network Data

Sources for Dr. Guy Gerard Lemire'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)
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)
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. Guy Gerard Lemire

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. Guy Gerard Lemire's NPI number?

Dr. Guy Gerard Lemire's NPI number is 1689632614. It was assigned on May 1, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Guy Gerard Lemire?

Dr. Guy Gerard Lemire is a cardiothoracic surgeon in Long Beach, California. The primary specialty in the NPI Registry is Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (taxonomy code 208G00000X).

Where does Dr. Guy Gerard Lemire practice?

Dr. Lemire practices at 1050 Linden Ave, Long Beach, CA 90813. Dr. Lemire's primary practice is UCI Health - Lakewood in Long Beach, California. Dmand AI also links Dr. Lemire to 1 physician office.

What is Dr. Guy Gerard Lemire's office phone number?

The practice phone on file for Dr. Lemire is (562) 531-2550.

What is Dr. Guy Gerard Lemire's medical license number?

Dr. Lemire holds California license A31562, one of the licenses on file in 15 states.

Which states has Dr. Guy Gerard Lemire been licensed in?

Dmand AI has state licenses on file for Dr. Lemire in California (1996 to 2026), South Dakota, Arkansas (2009 to 2027), South Carolina (2012 to 2027), Georgia (2008 to 2026), Maine (2007 to 2026), North Carolina (2012 to 2026), North Dakota (2012 to 2026), Oklahoma (2008 to 2026), Tennessee (2009 to 2026), Texas (2011 to 2026), Wyoming (2008 to 2026), Alabama (2011 to 2025), Indiana (2007 to 2025) and Utah (2007 to 2024).

Does Dr. Guy Gerard Lemire accept Medicare?

Yes. CMS data shows Dr. Lemire billed Medicare for 27 services in 2024.

How many Medicare patients does Dr. Guy Gerard Lemire see?

CMS counts 16 Medicare patients who saw Dr. Lemire in 2024, with an average age of 72.

Is Dr. Guy Gerard Lemire board certified?

Yes. Dr. Lemire is board certified in cvt surgery by the ROYAL COLLEGE OF PHYSICIANS & SURGEONS(C).

What services does Dr. Guy Gerard Lemire bill to Medicare?

In 2024, Dr. Lemire's most billed Medicare services were surgery: heart and blood vessels (33533) and surgery: heart and blood vessels (33518).

Show 6 more questionsShow fewer questions

Where did Dr. Guy Gerard Lemire go to medical school?

Dr. Lemire graduated from University of Laval Faculty of Medicine in 1967.

Has Dr. Guy Gerard Lemire received payments from drug or device companies?

CMS Open Payments shows $1,454 in general payments to Dr. Lemire from 10 companies from 2016 to 2023. The largest total came from Edwards Lifesciences Corporation.

How long has Dr. Guy Gerard Lemire been practicing?

Dr. Lemire graduated from medical school in 1967, 59 years ago.

Does Dr. Guy Gerard Lemire do research?

Dmand AI links 14 publications to Dr. Lemire.

Who does Dr. Guy Gerard Lemire publish with?

Dr. Lemire's most frequent co-authors are Judith L. Trudel, MD (2 shared papers).

What insurance does Dr. Guy Gerard Lemire accept?

Dr. Lemire is in network with 9 carriers, including United Healthcare, Elevance and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.

Selling to thoracic surgery (cardiothoracic vascular surgery) practices?

See cardiothoracic surgeons in California by site of care and group

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