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DR. MARCUS ALLEN DUFFY DO
NPI 1669316600
Student in an Organized Health Care Education/Training Program in Cheyenne, WY

Active since April 20, 2026
820 E 17TH ST, CHEYENNE, WY 82001(307) 234-6161 Get Directions Write a Review

NPPES record last updated: June 12, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Marcus Allen Duffy Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARCUS ALLEN DUFFY DO (NPI 1669316600) is an individual student in an organized health care education/training program in Cheyenne, Wyoming and active in the NPI registry since April 2026.

NPPES Registry Identity

NPI1669316600
Entity TypeIndividualMale
Primary Taxonomy390200000X
Provider Legal NameDR. MARCUS ALLEN DUFFYCredential: DO
Location Address820 E 17TH STCheyenne, WY 82001-4714
Mailing Address820 E 17th StCheyenne, WY 82001-4714 · (307) 634-2434
Phone(307) 234-6161
Sole ProprietorYes
Enumeration DateApril 20, 2026
Last NPPES UpdateJune 12, 2026
NPPES CertifiedJune 12, 2026
✔ NPI 1669316600 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
820 E 17TH ST, Cheyenne, WY 82001
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHRISTIAN ALEXANDER FLANDERS M.D.
Family Medicine
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 632-2434
UNIVERSITY OF WYOMING
Family Medicine
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 777-7911
ZACHARY DALE HERMAN
Family Medicine
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 632-2434
ERIN ELAINE FORTNER D.O.
Student in an Organized Health Care Education/Training Program
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 632-2434
DR. LINDSEY YELTON
Student in an Organized Health Care Education/Training Program
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 634-2434
KAVITHA SRINIVASAN MD
Family Medicine
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 632-2434
KRISTEN LEIGH BREHM MD
Family Medicine
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 632-2434
SAMANTHA ERIN TOWNSEND MD
Family Medicine
820 E 17TH ST
CHEYENNE, WY 82001
Laramie County (307) 777-7911

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marcus Duffy's NPI number?

The NPI number for Marcus Duffy is 1669316600. It was assigned to this individual provider in the NPPES registry on April 20, 2026.

Where is Marcus Duffy located?

Marcus Duffy practices at 820 E 17th St, Cheyenne, WY 82001. The listed phone number is (307) 234-6161.

What is Marcus Duffy's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

When was this NPI record last updated?

The NPPES record for Marcus Duffy was last updated on June 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.