George Karp, MD
NPI 1518955491 · Hematology & Oncology Physician · Brookline, MA
George Karp, MD is a Hematology & Oncology Physician provider in Brookline, MA (NPI 1518955491).
Provider details
- NPI number
- 1518955491
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA04468600 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-13
- Last updated
- 2023-06-23
- Certified
- 2023-06-23
Frequently asked questions
- What is George Karp's NPI number?
- George Karp's National Provider Identifier (NPI) is 1518955491, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Karp's specialty?
- George Karp is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is George Karp located?
- George Karp's practice location on file with NPPES is 20 Chapel Street, Brookline, MA 02446.
- What is George Karp's phone number?
- The practice phone number listed in the NPPES registry for George Karp is (732) 672-8281.
- Is George Karp's NPI active?
- Yes — George Karp's NPI (1518955491) is active in the NPPES registry as of the last update on 2023-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.