Robert S. Kramer, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Portland, ME
Robert S. Kramer, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Portland, Maine, and NPI 1215036900, issued on Sep 21, 2006. Check the license (Maine MD10216, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Robert S. Kramer
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- MD10216 ME
Self-reported in NPPES; status is on the state search - Practice location
- 818 Congress St, Portland, ME 04102
- Phone
- (207) 773-8161
- Enumerated
- Sep 21, 2006
- Record last updated
- Jul 23, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (207) 773-1489
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 25 in Maine → Look up another NPI →
Also registered at 818 Congress St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lawrence Adrian, P.A.-CSurgical Physician Assistant1891707493
- Ziyad Binsalamah, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1164843207
- Melissa Blier, PA-CSurgical Physician Assistant1528137726
- Scott Buchanan, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1932154135
- Lindsey Chorney, AGACNPAcute Care Nurse Practitioner1386077873
- Justin Claire, PA-CSurgical Physician Assistant1043746944
Verify Robert S. Kramer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD10216Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $199.56
1 payment: food and beverage; the largest payer was Atricure, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Robert S. Kramer among 25 thoracic surgery (cardiothoracic vascular surgery) physician records in Maine
Robert S. Kramer, MD is one of 25 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Maine. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 56% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2013 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Maine
There are 25 thoracic surgery (cardiothoracic vascular surgery) physician records in Maine.
All 25 in Maine → Every provider in Portland → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Ziyad Binsalamah, M.D.Portland, ME 041021164843207
- Scott Buchanan, M.D.Portland, ME 041021932154135
- Walter Denino, MDPortland, ME 041021114238755
- Ansar Hassan, MDPortland, ME 041021689859332
- Jennifer Kole, PA-CPortland, ME 041021841713633
- Jeremy Morton, M.D.Portland, ME 041021851692974
- Adam Paine, M.D.Portland, ME 041021770977225
- Cristian Rosu, MDPortland, ME 041021548665623
Common questions
What is Robert S. Kramer, MD's NPI number?
Robert S. Kramer, MD's National Provider Identifier (NPI) is 1215036900, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert S. Kramer, MD located?
The NPPES record lists a practice address at 818 Congress St, Portland, ME, 04102. Phone: (207) 773-8161. Providers update this record themselves, so call before visiting.
How can I verify Robert S. Kramer, MD's license?
NPPES lists Maine license number MD10216, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.