Individual provider · Type 1 NPI
John Hennessy, MD
Endocrinology, Diabetes & Metabolism Physician · Olean, NY
NPI number
1780676676
Active
Practice location
535 Main St
Olean, NY 14760-1513
Fax (716) 373-6632
Specialties and licenses
| Taxonomy | Code | License |
|---|---|---|
| Endocrinology, Diabetes & Metabolism Physician Primary | 207RE0101X | 179364 (NY) |
Endocrinology, Diabetes & Metabolism Physician: 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.
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About NPI 1780676676
John Hennessy, MD's National Provider Identifier is 1780676676, issued on Aug 17, 2005. The primary taxonomy on file is Endocrinology, Diabetes & Metabolism Physician (207RE0101X), and the practice location is in Olean, NY. The record was last updated on Jul 13, 2026.