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Edit this profileWhere to find John D. Klemperer, MD
- Bangor location main office
417 State St Ste 421, Bangor, ME 04401 - Bangor location
489 State St, Bangor, ME 04401
About Dr. Klemperer
Based in Bangor, ME, John D. Klemperer, MD is listed in the NPI registry under thoracic surgery (cardiothoracic). John graduated from State University of New York at Buffalo School of Medicine in 1990. According to Medicare claims data, John cared for 156 Medicare patients across 156 services. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes, and coronary artery bypass using artery graft, 1 graft. NPI 1457337172 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (207) 973-5293
- Email not available
Practice Locations
417 STATE ST STE 421
Bangor, ME 04401
489 State St
Bangor, ME 04401
Conditions Commonly Evaluated or Treated
Within Thoracic Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Airway
Chest tumors
Chest wall
Diaphragm
Esophagus
Esophagus and stomach
- Acid reflux
- Barrett's esophagus
- Esophageal cancer
- Esophageal pouch
- Esophagus tear
- Hiatal hernia
- Swallowing difficulties
Heart lining
Infection
Lung
Lung cancer
Lung conditions
Nerves
Nerves and blood vessels
Neuromuscular
Pleural disease
Sweating disorders
Trauma
Vascular
Procedures & services
Airway
Airway surgery
Chest tumors
Chest wall
Chest wall surgery
- Broken rib plating surgery
- Chest wall reconstruction
- Sunken chest repair
- Thoracic Outlet Decompression
Diagnostic tests
Diagnostics
Diaphragm
Diaphragm surgery
Emphysema
Esophagus
Esophagus surgery
- Acid reflux surgery
- Esophageal dilation
- Esophageal stent placement
- Esophagus removal surgery
- Hiatal hernia surgery
- Peroral endoscopic myotomy
Fluid drainage
Heart lining
Lung surgery
- Collapsed lung surgery
- Lung cancer surgery
- Lung lining scraping and cleaning
- Lung nodule removal
- Lung valve placement for emphysema
- Minimally invasive lung surgery
Nerves
Pleural disease
Robotic surgery
Surgical approach
Sweat surgery
Transplant
Trauma
Procedures Most Often Billed to Medicare
156 services · 156 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Coronary artery bypass using artery graft, 1 graft | Procedure | 33533 |
19 | As often as other peers in Thoracic Surgery (Cardiothoracic) |
| Harvest of vein using an endoscope | Procedure | 33508 |
18 | As often as other peers in Thoracic Surgery (Cardiothoracic) |
| Injection of agent to destroy rib nerve | Procedure | 64620 |
16 | Too few peers to compare |
| Removal of lymph nodes of chest cavity using an endoscope | Procedure | 32674 |
15 | As often as other peers in Thoracic Surgery (Cardiothoracic) |
| Exam of lung with removal of lung lobe using an endoscope | Procedure | 32663 |
11 | Less often than most peers in Thoracic Surgery (Cardiothoracic) |
| 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 | More often than most peers in Thoracic Surgery (Cardiothoracic) |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
19 | As often as other peers in Thoracic Surgery (Cardiothoracic) |
| 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 | Less often than most peers in Thoracic Surgery (Cardiothoracic) |
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.
Other thoracic surgery specialists at this location 1
Same specialty, same street address — most likely the same department or group.
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.
Other thoracic surgery specialists in Bangor 7
Same specialty, same city.
More connections — 21 related providers in 3 groups
Trained at State University of New York at Buffalo School of Medicine 8
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.
Also performs Coronary artery bypass using artery graft, 1 graft 5
Providers in ME who bill this service to Medicare most often.
Common questions
What does Dr. Klemperer specialize in?
Dr. Klemperer is a thoracic surgery (cardiothoracic) in Bangor, ME. That is the designation recorded for this NPI in the federal registry.
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. Contact the office directly to confirm availability and scheduling.
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.
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