George I. Karp, MD
Hematology & Oncology Physician · Brookline, MA
George I. Karp, MD is a hematology & oncology physician with a practice address in Brookline, Massachusetts, and NPI 1518955491, issued on Oct 13, 2005. Check the license on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- George I. Karp
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 25MA04468600 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 20 Chapel Street, Brookline, MA 02446
- Phone
- (732) 672-8281
- Enumerated
- Oct 13, 2005
- Record last updated
- Jun 23, 2023
- Fax
- (732) 390-7725
- Medicaid ID
- 1290304 NJ
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 461 in Massachusetts → Look up another NPI →
Verify George I. Karp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
George I. Karp among 461 hematology & oncology physician records in Massachusetts
George I. Karp, MD is one of 461 hematology & oncology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2023 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Massachusetts
There are 461 hematology & oncology physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 461 in Massachusetts → Every provider in Brookline → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Dennis Lynch, M.D.Brookline, MA 024461427191998
- Marilyn Novich, M.D.Waltham, MA 024511093916389
- Erik Vandendries, M.D.Waltham, MA 024511427184001
- Mary Lopresti, DONewton Centre, MA 024591700046885
- Chryssanthi Kournioti, M.D.Newton, MA 024621912181116
- Revati Rao, M.D.Newton, MA 024621043303688
- Susan SchumerNewton, MA 024621104934926
- John Yang, M.D.Newton, MA 024621013949551
Common questions
What is George I. Karp, MD's NPI number?
George I. Karp, MD's National Provider Identifier (NPI) is 1518955491, issued on Oct 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is George I. Karp, MD located?
The NPPES record lists a practice address at 20 Chapel Street, Brookline, MA, 02446. Phone: (732) 672-8281. Providers update this record themselves, so call before visiting.
How can I verify George I. Karp, MD's license?
Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. 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. 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.