Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Tiffany Marie Foust, MSN, FNP-C

Individual provider Family Nurse Practitioner · NPI 1821538000

Tiffany Marie Foust, MSN, FNP-C is a Nurse Practitioner in Vienna, Ohio. Qualified in 2015, 11 years ago. Practices with Mercy Health Physicians Youngstown, LLC, a 117-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
11
Licensed in
OH
In the registry since
2017
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
FNP-C — Family Nurse Practitioner, Certified
A family nurse practitioner certified by the AANP.

See every abbreviation used in this directory →

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Practice location Address checks out

341 Youngstown Kingsville Rd SE
Vienna, OH 44473-9601
Phone: (330) 394-2305
Fax: (330) 394-1405
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 9471 Market St Ste A, North Lima, OH 44452-8702 — (330) 726-7100
  • 1932 Niles Cortland Rd Ne, Warren, OH 44484-1055 — (330) 856-7702
  • 330 Wick Ave, Youngstown, OH 44503-1002 — (330) 747-4660

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence APRN.CNP.020138 (OH)

Record details

NPI number1821538000
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , FNP-C
Sole proprietorNo
NPI enumeratedMarch 7, 2017
Last updated in NPPESNovember 6, 2023
Certification dateNovember 6, 2023

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Mercy Health Physicians Youngstown, Llc — 117 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients84
Services billed 363 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Hmhp St Elizabeth Boardman Health Center Hospital · Boardman, OH
  • Mh St Elizabeth Youngstown Hospital Hospital · Youngstown, OH
  • Mh St Joseph Warren Hospital Hospital · Warren, OH

Colleagues at Mercy Health Physicians Youngstown, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 117 clinicians in the practice; 12 are shown here.

Other providers in Vienna