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

Mark S Obrien MD PLC

Organization Internal Medicine Physician · NPI 1609018233

Mark S Obrien MD PLC is an Internal Medicine Physician in Grand Rapids, Michigan. Licensed in Michigan. Registered with an NPI since 2009.

Licensed in
MI
In the registry since
2009

Practice location Address checks out

4070 Lake Dr SE Ste 201
Grand Rapids, MI 49546-8294
Phone: (616) 774-8200
Fax: (616) 774-0304
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301048187 (MI)

Record details

NPI number1609018233
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Obrien — Manager · (616) 774-8200
NPI enumeratedMarch 27, 2009
Last updated in NPPESOctober 24, 2012
Mailing address4070 Lake Dr Se, Suite 201, Grand Rapids, MI 49546-8294

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