Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen Schermerhorn Nigg, PA
Physician Assistant in Petoskey, MI · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851378715
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Registry record
Entity type Individual (Type 1)
Name Karen Schermerhorn Nigg
Credential PA
Sex Female
Practice address 560 W Mitchell St, Suite 510, Petoskey, MI, 49770
Phone (231) 487-6700
Fax (231) 487-0303
Enumeration date Dec 30, 2005
Last updated in NPPES Jan 22, 2013
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085001898 (IL) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 5601004742 (MI) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 4319099 | Medicaid | MI | - |
| 070015180 | Other | MI | RR MEDICARE |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1851378715 active?
Yes, as of the latest NPPES snapshot, NPI 1851378715 is active (record last updated 2013-01-22).
How do I verify Karen Nigg's NPI record?
Cross-check NPI 1851378715 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Melanie Manary Internal Medicine Physician · Petoskey, MI NPI 1437156940 Paul Blanchard Internal Medicine Physician · Petoskey, MI NPI 1588661086 John Diedrich Internal Medicine Physician · Petoskey, MI NPI 1114924610 Timothy Ismond Internal Medicine Physician · Petoskey, MI NPI 1649277153 Terry Jackson Internal Medicine Physician · Petoskey, MI NPI 1932106234 Maureen Doull Internal Medicine Physician · Petoskey, MI NPI 1881691095 William Heise Internal Medicine Physician · Petoskey, MI NPI 1760489959 Michele Sturt Family Nurse Practitioner · Petoskey, MI NPI 1932106135
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-22.