Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karen Hiltunen, MD
Pediatrics Physician in Groton, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1700864154
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Registry record
Entity type Individual (Type 1)
Name Karen Hiltunen
Credential MD
Sex Female
Practice address 100 Boston Rd, Suite F, Groton, MA, 01450
Phone (978) 448-8282
Fax (978) 448-6707
Enumeration date Jan 5, 2006
Last updated in NPPES Aug 14, 2007
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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 Karen Hiltunen's NPI record?
Cross-check NPI 1700864154 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1700864154 active?
Yes, as of the latest NPPES snapshot, NPI 1700864154 is active (record last updated 2007-08-14).
Other providers at this practice address
Browse all → Mark Francis Pediatrics Physician · Groton, MA NPI 1104813302 Dorothy Christiansen Rheumatology Physician · Groton, MA NPI 1558348953 Alfred Heinser Internal Medicine Physician · Groton, MA NPI 1871570218 Thomas Goodman Rheumatology Physician · Groton, MA NPI 1194702555 Jessica Amorosino Pediatrics Physician · Groton, MA NPI 1487601845 Paula Vaughan Medical Physician Assistant · Groton, MA NPI 1326154279 Groton Medical Associates, LLC Internal Medicine Physician · Groton, MA NPI 1144362740 Dana Oliver Pediatric Nurse Practitioner · Groton, MA NPI 1083861504
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-14.