IndividualActive
Lionel Ivashkiv, M.D.
NPI 1811035033 · Rheumatology Physician · New York, NY
Lionel Ivashkiv, M.D. is a Rheumatology Physician provider in New York, NY (NPI 1811035033).
Provider details
- NPI number
- 1811035033
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 163478 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
535 E 70th St
Hospital for Special Surgery
New York, NY 10021-4872
Phone: (212) 606-1171
Street-level locationGet directions
Mailing address
535 E 70th St
New York, NY 10021-4872
Registry dates
- Enumerated
- 2007-02-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lionel Ivashkiv's NPI number?
- Lionel Ivashkiv's National Provider Identifier (NPI) is 1811035033, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lionel Ivashkiv's specialty?
- Lionel Ivashkiv is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Lionel Ivashkiv located?
- Lionel Ivashkiv's practice location on file with NPPES is 535 E 70th St, New York, NY 10021-4872.
- What is Lionel Ivashkiv's phone number?
- The practice phone number listed in the NPPES registry for Lionel Ivashkiv is (212) 606-1171.
- Is Lionel Ivashkiv's NPI active?
- Yes — Lionel Ivashkiv's NPI (1811035033) 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.