Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Felipe Guillen, MD
Surgery Physician in Farmington, CT · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1609571017
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Registry record
Entity type Individual (Type 1)
Name Felipe Guillen
Credential MD
Sex Male
Practice address 135 Dowling Way, Farmington, CT, 06030
Phone (860) 679-3467
Fax (833) 842-0131
Enumeration date Apr 4, 2023
Last updated in NPPES Jul 29, 2025
Taxonomy & licenses
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
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
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 Felipe Guillen?
Felipe Guillen 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 → Kimberly Forlenza Obstetrics & Gynecology Physician · Farmington, CT NPI 1982283016 Feryal Alhamadani Ambulatory Care Pharmacist · Farmington, CT NPI 1649094624 Volmir Faedo Orthodontics and Dentofacial Orthopedics Dentistry · Farmington, CT NPI 1366319808 Sonam Talreja Student in an Organized Health Care Education/Training Program · Farmington, CT NPI 1427986322
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-29.