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

Seth Allen Mathern, MD

Individual provider Hospitalist Physician · NPI 1972998110

Seth Allen Mathern, MD is a Hospitalist in Denver, Colorado. Graduated from Columbia University College of Physicians and Surgeons in 2015, 11 years ago. Practices with Catholic Health Initiatives Colorado, a 1,266-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
11
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
CO
In the registry since
2015
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

2525 S Downing St
Denver, CO 80210-5817
Phone: (303) 673-7151
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 13001 E 17th Pl, Aurora, CO 80045-2570 — (720) 848-9096
  • 14300 Orchard Pkwy, Westminster, CO 80023-9206 — (720) 627-3761

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence DR.0060603 (CO)
Family Medicine Physician Taxonomy 207Q00000X · Licence DR.0060603 (CO)

Record details

NPI number1972998110
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 4, 2015
Last updated in NPPESSeptember 4, 2025
Certification dateSeptember 4, 2025

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesEMERGENCY MEDICINE, FAMILY PRACTICE
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 2015 (11 years in practice)
Group practice Catholic Health Initiatives Colorado — 1266 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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