Matthew Hellmann, MD
NPI 1881853422 · Hematology & Oncology Physician · New York, NY
Matthew Hellmann, MD is a Hematology & Oncology Physician provider in New York, NY (NPI 1881853422).
Provider details
- NPI number
- 1881853422
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 260420 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2008-06-09
- Last updated
- 2014-04-10
Frequently asked questions
- What is Matthew Hellmann's NPI number?
- Matthew Hellmann's National Provider Identifier (NPI) is 1881853422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Hellmann's specialty?
- Matthew Hellmann is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Hellmann located?
- Matthew Hellmann's practice location on file with NPPES is 300 E 66th St, New York, NY 10065-6800.
- What is Matthew Hellmann's phone number?
- The practice phone number listed in the NPPES registry for Matthew Hellmann is (617) 726-2862.
- Is Matthew Hellmann's NPI active?
- Yes — Matthew Hellmann's NPI (1881853422) is active in the NPPES registry as of the last update on 2014-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.