Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John J Napierkowski, MD

Individual provider Gastroenterology Physician · NPI 1801877683

Dr. John J Napierkowski, MD is a Gastroenterology in Lafayette, Colorado. Graduated from Northwestern University Feinberg Medical School in 1996, 30 years ago. Practices with Colorado Permanente Medical Group PC, a 1,325-clinician group and accepts Medicare assignment. Licensed in Colorado and New Mexico.

Years since qualifying
30
Trained at
Northwestern University Feinberg Medical School
Licensed in
CO, NM
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

280 Exempla Cir
Lafayette, CO 80026-3370
Phone: (303) 338-4545
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 46539 (CO)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 99-94 (NM)

Record details

NPI number1801877683
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 9, 2005
Last updated in NPPESJune 3, 2021
Certification dateJune 3, 2021
Mailing address10350 E Dakota Ave, Denver, CO 80247-1314

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1996 (30 years in practice)
Group practice Colorado Permanente Medical Group Pc — 1325 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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