Siyang Leng, MD
NPI 1619105111 · Hematology (Internal Medicine) Physician · New York, NY
Siyang Leng, MD is a Hematology (Internal Medicine) Physician provider in New York, NY (NPI 1619105111).
Provider details
- NPI number
- 1619105111
- Entity type
- Individual
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 269268 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
17 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
- 2009-06-23
- Last updated
- 2017-06-27
Frequently asked questions
- What is Siyang Leng's NPI number?
- Siyang Leng's National Provider Identifier (NPI) is 1619105111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Siyang Leng's specialty?
- Siyang Leng is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Siyang Leng located?
- Siyang Leng's practice location on file with NPPES is 161 Fort Washington Ave, New York, NY 10032-3729.
- What is Siyang Leng's phone number?
- The practice phone number listed in the NPPES registry for Siyang Leng is (646) 317-4805.
- Is Siyang Leng's NPI active?
- Yes — Siyang Leng's NPI (1619105111) is active in the NPPES registry as of the last update on 2017-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.