Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary J Boylan, MD
Surgery Physician in Duluth, MN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851343131
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary J Boylan
Credential MD
Sex Female
Practice address 920 E 1st St, Ste 303, Duluth, MN, 55805
Phone (218) 249-6050
Fax (218) 249-6055
Enumeration date May 16, 2006
Last updated in NPPES Aug 7, 2024
Taxonomy & licenses
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 33516 (NH) Secondary
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 |
|---|---|---|---|
| 201716400 | Medicaid | MN | - |
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 Mary Boylan?
Mary Boylan is registered in NPPES with the primary taxonomy of Surgery 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 → David Choquette Otolaryngology Physician · Duluth, MN NPI 1609857101 Todd Freeman Otolaryngology Physician · Duluth, MN NPI 1639150147 Sharon Johnson Audiologist · Duluth, MN NPI 1881656320 Wayne Hougas Audiologist · Duluth, MN NPI 1205885118 Vance Bachelder Pulmonary Disease Physician · Duluth, MN NPI 1710936125 Wayne Elmer Pulmonary Disease Physician · Duluth, MN NPI 1740230903 Marvin Nevonen Surgery Physician · Duluth, MN NPI 1427008564 William Himango Neurological Surgery Physician · Duluth, MN NPI 1487604492
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-07.