Mark Grenquist, DO

Hospital Medicine

20+ years in practiceNPI: 1942300454Licensed in MI

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Credentials & Recognition

Specialties

Hospital Medicine

NPI sub-specialties

Internal Medicine207R00000X

Hospitalist208M00000X

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

Featured in PBCMMG Rankings

#35

Top Hospital Medicine Doctors in Michigan, 2026

Hospital Medicine · Michigan · 2026

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Frequently Asked Questions about Dr. Mark Grenquist, DO

Where does Dr. Mark Grenquist, DO practice?+
Dr. Mark Grenquist, DO practices in Michigan, MI. 775 S MAIN ST CHELSEA, MI 481181383.
What is Dr. Mark Grenquist, DO's phone number?+
Dr. Mark Grenquist, DO's practice phone is 734-593-6000. Office contact information is verified on the PBCMMG profile.
What does Dr. Mark Grenquist, DO specialize in?+
Dr. Mark Grenquist, DO's primary specialty is Hospital Medicine.
Is Dr. Mark Grenquist, DO board certified?+
Board certification status for Dr. Mark Grenquist, DO 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. Mark Grenquist, DO been practicing?+
Dr. Mark Grenquist, DO has been in active practice for 20+ years, based on NPI enumeration and state licensing records.
What is Dr. Mark Grenquist, DO's NPI number?+
Dr. Mark Grenquist, DO's National Provider Identifier (NPI) is 1942300454, 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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