Guy Demasellis , AGNP-C
Nurse Practitioner • Saginaw, MI
Notice of NPI Deactivation & Inactive Practice Status
According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Guy Demasellis has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Guy Demasellis, AGNP-C was a registered Nurse Practitioner practicing in Saginaw, MI. Throughout an active medical career spanning 10 years, Guy Demasellis provided care at the practice location at 1614 BIRNEY ST until profile deactivation on 2025-07-31.
Practice Location & Contact Primary Location
1614 Birney St
Saginaw, MI 486022824
Specialty Benchmarks & Practice Insights
Comparative analytics for Nurse Practitioner in Saginaw, MI
Practicing in Saginaw, MI (3626 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Record deactivated on July 31, 2025
NPI status registered as active in NPPES database
Registered at 1614 BIRNEY ST, SAGINAW, MI 486022824 (Tel: 9892331634)
Registered at 1614 BIRNEY ST, SAGINAW, MI 486022824 (Tel: 9892331634)
Recorded as GUY DEMASELLIS, AGNP-C
Nurse Practitioner (License #4704231409 in MI)
First registered as active Individual Practitioner in NPPES Database.
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NPI Administrative Meta
Mailing Address
1614 Birney St
Saginaw, MI 486022824
Phone: 9892331634
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