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

Granite State Lab LLC

Organization Clinical Medical Laboratory · NPI 1548686850

Granite State Lab LLC is a Clinical Medical Laboratory in Rochester, New Hampshire. Registered with an NPI since 2014.

In the registry since
2014
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

120 Washington St
Rochester, NH 03867
Phone: (603) 330-7057
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Medical Laboratory (primary) Taxonomy 291U00000X

Record details

NPI number1548686850
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John Marzinzik — Senior Vp, Cfo · (603) 335-8103
NPI enumeratedMarch 11, 2014
Last updated in NPPESMarch 11, 2014
Mailing address120 Washington Street, Rochester, NH 03867

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