Leonard Mastbaum, MD
NPI 1619928249 · Endocrinology, Diabetes & Metabolism Physician · Fort Wayne, IN
Leonard Mastbaum, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Fort Wayne, IN (NPI 1619928249).
Provider details
- NPI number
- 1619928249
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 01041346 (IN)
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
- 2006-05-16
- Last updated
- 2013-03-23
Frequently asked questions
- What is Leonard Mastbaum's NPI number?
- Leonard Mastbaum's National Provider Identifier (NPI) is 1619928249, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Mastbaum's specialty?
- Leonard Mastbaum is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Mastbaum located?
- Leonard Mastbaum's practice location on file with NPPES is 11123 Parkview Plaza Dr, Fort Wayne, IN 46845-1707.
- What is Leonard Mastbaum's phone number?
- The practice phone number listed in the NPPES registry for Leonard Mastbaum is (260) 373-4280.
- Is Leonard Mastbaum's NPI active?
- Yes — Leonard Mastbaum's NPI (1619928249) is active in the NPPES registry as of the last update on 2013-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.