Physician Profile
Unclaimed ProfileAbout KLEMPERER
Based in Bangor, ME, John Dean Klemperer, MD is listed in the NPI registry under cardiac surgery. John graduated from State University of New York at Buffalo School of Medicine in 1990. John is also listed as specializing in thoracic surgery (cardiothoracic). According to Medicare claims data, John cared for 156 Medicare patients across 156 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (207) 973-5293
- Email not available
Practice Locations
417 STATE ST STE 421
Bangor, ME 04401
Procedures Most Often Billed to Medicare
156 services · 156 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Coronary artery bypass using artery graft, 1 graft | Procedure | 33533 |
19 |
| Harvest of vein using an endoscope | Procedure | 33508 |
18 |
| Injection of agent to destroy rib nerve | Procedure | 64620 |
16 |
| Removal of lymph nodes of chest cavity using an endoscope | Procedure | 32674 |
15 |
| Exam of lung with removal of lung lobe using an endoscope | Procedure | 32663 |
11 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
46 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
19 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
12 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at State University of New York at Buffalo School of Medicine 3
Other providers in the same specialty who trained at the same institution.
Class of 1990 at State University of New York at Buffalo School of Medicine 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Coronary artery bypass using artery graft, 1 graft 8
Providers in ME who bill this service to Medicare most often.
Common questions
What does Dr. Klemperer specialize in?
Dr. Klemperer is a cardiac surgeon in Bangor, ME. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CARDIAC SURGERY”.
NPI registry
Where is Dr. Klemperer located?
Dr. Klemperer is listed at 417 STATE ST STE 421, Bangor, ME 04401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Klemperer's phone number?
The number on file is (207) 973-5293. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Klemperer's NPI number?
Dr. Klemperer's National Provider Identifier is 1457337172. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Klemperer go to medical school?
Dr. Klemperer attended State University of New York at Buffalo School of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Klemperer been practicing?
Dr. Klemperer has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Klemperer do most often?
According to Medicare billing data, Dr. Klemperer performs procedures including coronary artery bypass using artery graft, 1 graft, harvest of vein using an endoscope and injection of agent to destroy rib nerve, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Klemperer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Klemperer. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.