Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Blackmer, NP
Nurse Practitioner in Cadillac, MI · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861719304
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Registry record
Entity type Individual (Type 1)
Name Mary Blackmer
Credential NP
Sex Female
Practice address 7917 Mackinaw Trl, Cadillac, MI, 49601
Phone (231) 779-9700
Enumeration date Apr 23, 2010
Last updated in NPPES Apr 23, 2010
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704116038 (MI) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority.
About the NP credential
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
How do I verify Mary Blackmer's NPI record?
Cross-check NPI 1861719304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1861719304 active?
Yes, as of the latest NPPES snapshot, NPI 1861719304 is active (record last updated 2010-04-23).
Other providers at this practice address
Browse all → Megan Santangelo Pediatrics Physician · Cadillac, MI NPI 1376523282 Susan Betts-Barbus Pediatrics Physician · Cadillac, MI NPI 1437116233 Elizabeth Rzepkaalto Pediatrics Physician · Cadillac, MI NPI 1033176599 Gerald Herring Pediatrics Physician · Cadillac, MI NPI 1750348975 Mackinaw Trail Health Associates, P.C. Pediatrics Physician · Cadillac, MI NPI 1669549333 Mackinaw Trail Health Associates P C Pediatrics Physician · Cadillac, MI NPI 1639463136
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-23.