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LEONARD I MASTBAUM MD
NPI 1619928249
Internal Medicine - Endocrinology, Diabetes & Metabolism in Fort Wayne, IN

Active since May 16, 2006
11123 PARKVIEW PLAZA DR, SUITE 202, FORT WAYNE, IN 46845(260) 373-4280(260) 373-4288 Get Directions Write a Review

NPPES record last updated: March 23, 2013. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Leonard I Mastbaum Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LEONARD I MASTBAUM MD (NPI 1619928249) is an individual endocrinology, diabetes & metabolism provider in Fort Wayne, Indiana, licensed in Indiana (01041346) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1619928249
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameLEONARD I MASTBAUMCredential: MD
Location Address11123 PARKVIEW PLAZA DR, SUITE 202Fort Wayne, IN 46845-1707
Mailing Address1234 E Dupont Rd, Suite 1Fort Wayne, IN 46825-1545 · (260) 373-9700 · Fax (260) 373-9740
Phone(260) 373-4280
Fax(260) 373-4288
Sole ProprietorNo
Enumeration DateMay 16, 2006
Last NPPES UpdateMarch 23, 2013
✔ NPI 1619928249 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in IN · 01041346
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
11123 PARKVIEW PLAZA DR, Fort Wayne, IN 46845
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Other Identifiers 5

Other000000606758IN · Anthem
Medicare ID-Type Unspecified925060MIN
Medicare UPIND81853IN
Medicare PIN070860C1IN
Medicaid100360850IN

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CARA E WALKER APN
Nurse Practitioner (Women's Health)
11123 PARKVIEW PLAZA DR, SUITE 101
FORT WAYNE, IN 46845
Allen County (260) 422-7455
AMANDA RINGWOOD
Nurse Practitioner
11123 PARKVIEW PLAZA DR
FORT WAYNE, IN 46845
Allen County (260) 373-5830
STARR NEWMAN P.A.
Physician Assistant
11123 PARKVIEW PLAZA DR, # 102
FORT WAYNE, IN 46845
Allen County (260) 483-0688
WIELAND & ASSOCIATES, INC.
Psychologist
11123 PARKVIEW PLAZA DR, SUITE 200
FORT WAYNE, IN 46845
Allen County (260) 672-6510
KELSEA KAY LEROSE NP
Nurse Practitioner
11123 PARKVIEW PLAZA DR
FORT WAYNE, IN 46845
Allen County (260) 425-6650
FORT WAYNE CARDIOVASCULAR ASSOCIATES
Thoracic Surgery (Cardiothoracic Vascular Surgery)
11123 PARKVIEW PLAZA DR, SUITE 202
FORT WAYNE, IN 46845
Allen County (260) 483-6448
JOHN E DRAKE D.O.
Obstetrics & Gynecology
11123 PARKVIEW PLAZA DR, SUITE 101
FORT WAYNE, IN 46845
Allen County (260) 422-7455
MRS. NANCY SUE HINTON NP
Nurse Practitioner (Adult Health)
11123 PARKVIEW PLAZA DR, SUITE 206
FORT WAYNE, IN 46845
Allen County (260) 266-2020

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leonard Mastbaum's NPI number?

The NPI number for Leonard Mastbaum is 1619928249. It was assigned to this individual provider in the NPPES registry on May 16, 2006.

Where is Leonard Mastbaum located?

Leonard Mastbaum practices at 11123 Parkview Plaza Dr Suite 202, Fort Wayne, IN 46845. The listed phone number is (260) 373-4280.

What is Leonard Mastbaum's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Leonard Mastbaum was last updated on March 23, 2013. NPI Profile syncs with the weekly NPPES data releases published by CMS.