Susan Lessin, M.D.
NPI 1629066618 · Hematology & Oncology Physician · Sunnyvale, CA
Susan Lessin, M.D. is a Hematology & Oncology Physician provider in Sunnyvale, CA (NPI 1629066618).
Provider details
- NPI number
- 1629066618
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Specialist174400000X
Other Service Providers
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
83% 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
- 2005-10-12
- Last updated
- 2016-01-27
Frequently asked questions
- What is Susan Lessin's NPI number?
- Susan Lessin's National Provider Identifier (NPI) is 1629066618, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Lessin's specialty?
- Susan Lessin is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Lessin located?
- Susan Lessin's practice location on file with NPPES is 585 N Mary Ave, Sunnyvale, CA 94085-2905.
- What is Susan Lessin's phone number?
- The practice phone number listed in the NPPES registry for Susan Lessin is (408) 730-5100.
- Is Susan Lessin's NPI active?
- Yes — Susan Lessin's NPI (1629066618) is active in the NPPES registry as of the last update on 2016-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.