Summary

Dr. John Klemperer treats hypertension, coronary artery disease, and coronary artery disease in women, and performs coronary artery bypass graft, minimally invasive heart surgery, and off-pump bypass surgery. He has practiced thoracic surgery for 36 years and is affiliated with Northern Light Eastern Maine Medical Center.

Dr. Klemperer earned his medical degree from the Jacobs School of Medicine and Biomedical Sciences at the University of Buffalo and completed his residency at New York Presbyterian Hospital. He sees patients in Bangor, Maine, and speaks English and Spanish. Patients on Vitals rate Dr. Klemperer 5 out of 5.

Overview based on verified provider data

Quick Facts

  • 5
  • 36 years of experience
  • 42 insurance plans accepted
  • speaks English, Spanish
  • New York Presbyterian Hospital
  • 1 written review
  • 1 specialty
  • 7 areas of expertise
  • 1 hospital affiliation
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. John Dean Klemperer has 3 locations

Northern Light Cardiothoracic Surgery

417 State St Ste 421Bangor, ME 04401
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 4:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

Northern Light Surgery

417 State St Ste 330Bangor, ME 04401
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

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Dr. John Dean Klemperer, MD
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Dr. John Dean Klemperer, MDDr. Darryl Maurice HoffmanDr. Felix Hernandez JR., MDDr. Ashley Eileen Sirois
Thoracic SurgeryThoracic SurgeryThoracic SurgeryThoracic Surgery
Accepts New Patients
5 
4 
5 
0 
36 Years of Experience 44 Years of Experience 46 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English
Bangor , MEBangor , MEBrewer , MEBangor , ME
Med School: Jacobs School Of Medicine & Biomedical Sciences At The Univ Of Buffalo Med School: University Of The Witwatersrand Faculty Of Health Sciences Med School: University Of Connecticut School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Dean Klemperer

  • AARP
  • AARP - Medicare
  • Aetna
  • Aetna - HMO
  • Aetna - Medicare
  • Aetna - POS
  • Aetna - PPO
  • Anthem Blue Cross
  • Anthem Blue Cross - Medicare
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - Medicare
  • Blue Cross Blue Shield of Kansas
  • CHAMPVA
  • Cigna
  • Community Health Options
  • EmblemHealth
  • GEHA
  • Golden Rule
  • Harvard Pilgrim Health Care
  • Humana
  • Humana - Medicare
  • Humana - PPO
  • Medicaid - Medicaid
  • Medicaid - Medicaid (HMO Plans)
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid (Managed)
  • Medicare - Medicare
  • Meritain Health
  • Moda Health
  • Mutual of Omaha
  • Optum Health
  • STLDentalPlan| LLC
  • Transamerica
  • Tricare
  • UniCare
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • UnitedHealthcare - Medicare
  • UnitedHealthOne
  • Wellcare
  • Wellcare - Medicare

Medical Specialties

Dr. John Dean Klemperer has the following specialty

Specialty Expertise

Dr. John Dean Klemperer has the following 7 areas of expertise

  • Aneurysm
  • Cardiopulmonary Bypass (CPB)
  • Coronary Artery Bypass (Heart Bypass)
  • Deep Vein Thrombosis
  • Diabetes Complications
  • Varicose Veins
  • Vascular Malformations

Certifications, License, & Education

36 Years Experience

Dr. John Dean Klemperer holds an expired medical license in the state of Maine.

Medical License

PositionStateYearStatus
Medical DoctorMaine2026Expired

Education & Training

Residency

Completed their residency at New York Presbyterian Hospital.

Medical School

Graduated from Jacobs School Of Medicine & Biomedical Sciences At The Univ Of Buffalo in 1990.

NPI Number

Dr. Klemperer's NPI number is 1457337172.

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Frequently Asked Questions

Which hospitals is Dr. John Klemperer affiliated with?
Dr. John Klemperer is affiliated with Northern Light Eastern Maine Medical Center.
What languages does Dr. John Klemperer speak?
Dr. John Klemperer speaks English and Spanish.
Does Dr. John Klemperer accept my insurance?
You can see the insurance plans that Dr. John Klemperer accepts on their Vitals profile.
Where is Dr. John Klemperer's office located?
Dr. John Klemperer's office is located at 417 State St Ste 421, Bangor, ME, 04401.
Does Dr. John Klemperer accept virtual/telehealth appointments?
Dr. John Klemperer has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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