Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sarah M Frenning, MD
Pediatrics Physician in Duluth, MN · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1043345887
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Sarah M Frenning
Credential MD
Sex Female
Practice address 420 E 1st St, Duluth, MN, 55805
Phone (218) 786-8364
Enumeration date Feb 22, 2007
Last updated in NPPES Jan 31, 2022
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1480271 | Medicaid | ND | - |
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Sarah Frenning?
Sarah Frenning is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Teri Larson-Johnson Physician Assistant · Duluth, MN NPI 1891761664 David Kunstman Family Medicine Physician · Duluth, MN NPI 1316907454 Richard Krikava Pharmacist · Duluth, MN NPI 1952455669 Amy Garcia Pediatric Gastroenterology Physician · Duluth, MN NPI 1407995434 Bruce Smith Internal Medicine Physician · Duluth, MN NPI 1255467841 Therese Durkin Family Medicine Physician · Duluth, MN NPI 1376668210 Ryan Wippler Diagnostic Radiology Physician · Duluth, MN NPI 1205037538 Eric Boehmer Family Medicine Physician · Duluth, MN NPI 1023217528
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-31.