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

Dr. Marcus Allen Duffy, DO

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1669316600

Dr. Marcus Allen Duffy, DO is a Student in an Organized Health Care Education/Training Program in Cheyenne, Wyoming. Practices as a sole proprietor. Registered with an NPI since 2026.

In the registry since
2026
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

820 E 17th St
Cheyenne, WY 82001-4714
Phone: (307) 234-6161
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Student in an Organized Health Care Education/Training Program (primary) Taxonomy 390200000X

Record details

NPI number1669316600
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedApril 20, 2026
Last updated in NPPESJune 12, 2026
Certification dateJune 12, 2026
Mailing address820 E 17th St, Cheyenne, WY 82001-4714

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