Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Colin Andrew Klenk, M.D.
Neurology Physician in Stamford, CT · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487004024
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Registry record
Entity type Individual (Type 1)
Name Dr. Colin Andrew Klenk
Credential M.D.
Sex Male
Practice address 1 Hospital Plz, Stamford, CT, 06902
Phone (203) 276-4464
Fax (203) 276-4468
Enumeration date Jun 14, 2016
Last updated in NPPES Aug 5, 2021
Taxonomy & licenses
2084V0102X Vascular Neurology Physician Allopathic & Osteopathic Physicians · License 66399 (CT) 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
What is the NPI number for Colin Klenk?
The National Provider Identifier (NPI) for Colin Klenk is 1487004024, a Type 1 (individual) record in the CMS NPPES registry.
Where does Colin Klenk practice?
The practice location on file with NPPES is in Stamford, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Henry Yoon Family Medicine Physician · Stamford, CT NPI 1790786259 Stamford Hospital General Acute Care Hospital · Stamford, CT NPI 1356331425 Brian Timko Hospitalist Physician · Stamford, CT NPI 1659352946 Shannon Desimone Family Nurse Practitioner · Stamford, CT NPI 1669456976 Richard Stumacher Pulmonary Disease Physician · Stamford, CT NPI 1073575981 Stamford Pathology Group PC Anatomic Pathology & Clinical Pathology Physician · Stamford, CT NPI 1902852445 Donald Sampson Pediatrics Physician · Stamford, CT NPI 1558318501 Kathleen Nurena Family Medicine Physician · Stamford, CT NPI 1437191954
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-05.