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

Individual provider Family Medicine Physician · NPI 1598846370

John Ryan Marlin, MD is a Family Practice in Delta, Colorado. Graduated from Oregon Health Sciences University School of Medicine in 2005, 21 years ago. Practices with Delta County Memorial Hospital, a 106-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
21
Trained at
Oregon Health Sciences University School of Medicine
Licensed in
CO
In the registry since
2006
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

555 Meeker St
Delta, CO 81416-1920
Phone: (970) 874-5777
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 44832 (CO)

Record details

NPI number1598846370
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 18, 2006
Last updated in NPPESDecember 3, 2013
Mailing address555 Meeker St, Delta, CO 81416-1920

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesOBSTETRICS/GYNECOLOGY
Medical schoolOREGON HEALTH SCIENCES UNIVERSITY SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Delta County Memorial Hospital — 106 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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