Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. Alec Marshall Antanaitis

Individual provider Gerontology Nurse Practitioner · NPI 1104715770

Mr. Alec Marshall Antanaitis is a Nurse Practitioner in Jefferson, Iowa. Qualified in 2025, 1 year ago. Practices with Greene County Medical Center, a 15-clinician group and accepts Medicare assignment. Licensed in Iowa.

Years since qualifying
1
Licensed in
IA
In the registry since
2025

Practice location Address checks out

1000 W Lincoln Way
Jefferson, IA 50129-1685
Phone: (515) 386-2114
Fax: (515) 386-8899
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gerontology Nurse Practitioner (primary) Taxonomy 363LG0600X · Licence H184694 (IA)

Record details

NPI number1104715770
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJune 30, 2025
Last updated in NPPESMarch 13, 2026
Certification dateMarch 13, 2026
Mailing address1002 W Lincoln Way, Jefferson, IA 50129-1645

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2025 (1 years in practice)
Group practice Greene County Medical Center — 15 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount