Leonard Grauer, MD
NPI 1023019726 · Cardiovascular Disease Physician · Hamden, CT
Leonard Grauer, MD is a Cardiovascular Disease Physician provider in Hamden, CT (NPI 1023019726).
Provider details
- NPI number
- 1023019726
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 13960 (CT)
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
- 2005-08-03
- Last updated
- 2010-02-08
Frequently asked questions
- What is Leonard Grauer's NPI number?
- Leonard Grauer's National Provider Identifier (NPI) is 1023019726, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Grauer's specialty?
- Leonard Grauer is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Grauer located?
- Leonard Grauer's practice location on file with NPPES is 1952 Whitney Ave, Hamden, CT 06517-1209.
- What is Leonard Grauer's phone number?
- The practice phone number listed in the NPPES registry for Leonard Grauer is (203) 773-3055.
- Is Leonard Grauer's NPI active?
- Yes — Leonard Grauer's NPI (1023019726) is active in the NPPES registry as of the last update on 2010-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.