Martin Grennan, MD
20+ years in practiceNPI: 1861560039Licensed in OH
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Credentials & Recognition
Practice Signals
Editorial signals beyond credentials. Patient transparency over opacity. See methodology.
Mid-Level (PA/NP) Use
Doctor-led visits
Years in Practice
20+ years
Estimated from NPI enumeration date
Frequently Asked Questions about Dr. Martin Grennan, MD
Where does Dr. Martin Grennan, MD practice?+
Dr. Martin Grennan, MD practices in Pennsylvania, PA. 1044 BELMONT AVE
YOUNGSTOWN, OH 445041006.
What is Dr. Martin Grennan, MD's phone number?+
Dr. Martin Grennan, MD's practice phone is 330-480-3296. Office contact information is verified on the PBCMMG profile.
Is Dr. Martin Grennan, MD board certified?+
Board certification status for Dr. Martin Grennan, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Martin Grennan, MD been practicing?+
Dr. Martin Grennan, MD has been in active practice for 20+ years, based on NPI enumeration and state licensing records.
What is Dr. Martin Grennan, MD's NPI number?+
Dr. Martin Grennan, MD's National Provider Identifier (NPI) is 1861560039, registered in the federal NPPES registry.
Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards
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