Stephen Landaw, M.D.
NPI 1598794851 · Hematology & Oncology Physician · Boston, MA
Stephen Landaw, M.D. is a Hematology & Oncology Physician provider in Boston, MA (NPI 1598794851).
Provider details
- NPI number
- 1598794851
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 202862 (MA)
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
19 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
- 2006-06-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Stephen Landaw's NPI number?
- Stephen Landaw's National Provider Identifier (NPI) is 1598794851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Landaw's specialty?
- Stephen Landaw is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Landaw located?
- Stephen Landaw's practice location on file with NPPES is 330 Brookline Ave # 430, Boston, MA 02215-5400.
- What is Stephen Landaw's phone number?
- The practice phone number listed in the NPPES registry for Stephen Landaw is (617) 667-2131.
- Is Stephen Landaw's NPI active?
- Yes — Stephen Landaw's NPI (1598794851) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.