Lynn Ratner, M.D.
NPI 1891749255 · Hematology & Oncology Physician · New York, NY
Lynn Ratner, M.D. is a Hematology & Oncology Physician provider in New York, NY (NPI 1891749255).
Provider details
- NPI number
- 1891749255
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 094845 (NY)
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
- 2006-05-20
- Last updated
- 2019-04-08
Frequently asked questions
- What is Lynn Ratner's NPI number?
- Lynn Ratner's National Provider Identifier (NPI) is 1891749255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynn Ratner's specialty?
- Lynn Ratner is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Lynn Ratner located?
- Lynn Ratner's practice location on file with NPPES is 112 E 83rd St, New York, NY 10028-0880.
- What is Lynn Ratner's phone number?
- The practice phone number listed in the NPPES registry for Lynn Ratner is (212) 396-0400.
- Is Lynn Ratner's NPI active?
- Yes — Lynn Ratner's NPI (1891749255) is active in the NPPES registry as of the last update on 2019-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.