Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mary Ann Yi-Ang Huang, MD

Individual provider Gastroenterology Physician · NPI 1477621902

Mary Ann Yi-Ang Huang, MD practises Gastroenterology in Denver, Colorado. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1996, 30 years ago. Practices with Healthone Clinic Services - Medical Specialties LLC, a 20-clinician group, works from 5 locations, accepts Medicare assignment and offers telehealth. Licensed in Colorado and Michigan.

Years since qualifying
30
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
CO, MI
In the registry since
2006
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

1601 E 19th Ave Ste 5150
Denver, CO 80218-1201
Phone: (720) 754-2155
Fax: (720) 754-2106
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 1601 E 19th Ave Ste 5050, Denver, CO 80218-1200 — (720) 754-2155
  • 315 N 25th St Ste 201, Billings, MT 59101-1328 — (720) 949-9992
  • 801 Encino Pl Ne Ste B11, Albuquerque, NM 87102-2642 — (720) 949-9992
  • 940 E 3rd St Ste 201, Casper, WY 82601-3251 — (720) 949-9992

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence DR.0056376 (CO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 4301076336 (MI)

Record details

NPI number1477621902
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 1, 2006
Last updated in NPPESMarch 25, 2026
Certification dateMarch 25, 2026

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Healthone Clinic Services - Medical Specialties Llc — 20 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients263
Services billed 435 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $56,422 15 payments
Travel and Lodging $6,255 30 payments · travel or lodging paid or reimbursed, such as to attend a conference
Consulting Fee $6,200 2 payments
Food and Beverage $3,103 49 payments · a meal or drink at a meeting or visit, not a fee
Honoraria $2,760 1 payment
Education $65 2 payments · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Healthone Clinic Services - Medical Specialties LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 20 clinicians in the practice; 12 are shown here.

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