Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Miss. Holly S. Messina, CRNP

Individual provider Family Nurse Practitioner · NPI 1861633844

Miss. Holly S. Messina, CRNP is a Nurse Practitioner in Austintown, Ohio. Qualified in 2008, 18 years ago. Practices with Mercy Health Physicians Youngstown, LLC, a 117-clinician group and accepts Medicare assignment. Licensed in Ohio and Pennsylvania.

Years since qualifying
18
Licensed in
OH, PA
In the registry since
2009
Specialties on file
2
What do these letters mean?
CRNP — Certified Registered Nurse Practitioner
The title Pennsylvania and some other states use for a nurse practitioner.

See every abbreviation used in this directory →

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Practice location Address checks out

5533 Mahoning Ave Fl 2
Austintown, OH 44515-2366
Phone: (330) 793-2701
Fax: (330) 793-8688
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence APRN.CNP.12305 (OH)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence SP010246 (PA)

Record details

NPI number1861633844
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNP
Sole proprietorNo
NPI enumeratedMarch 20, 2009
Last updated in NPPESMay 12, 2021
Certification dateMay 12, 2021

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Mercy Health Physicians Youngstown, Llc — 117 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 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 patients225
Services billed 757 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.

  • Mh St Elizabeth Youngstown Hospital Hospital · Youngstown, 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 Austintown