Mary Ann Huang, M.D.
NPI 1477621902 · Gastroenterology Physician · Denver, CO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ann Huang, M.D. is a Gastroenterology Physician provider in Denver, CO (NPI 1477621902).
Provider details
- NPI number
- 1477621902
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- DR.0056376 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
366 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 85 | $57 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 58 | $111 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 58 | $147 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 50 | $73 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 28 | $247 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 118 | 32 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 62 | 62 |
| Linaclotidebrand: Linzess | 31 | — |
| Omeprazole | 30 | 12 |
| Azathioprine | 28 | — |
| Rifaximinbrand: Xifaxan | 25 | — |
| Furosemide | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$61,150 across 105 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (4)
- 1601 E 19th Ave Ste 5050Denver, CO 80218-1200Phone: (720) 754-2155Fax: (720) 754-2106
- 315 N 25th St Ste 201Billings, MT 59101-1328Phone: (720) 949-9992Fax: (720) 746-6462
- 801 Encino Pl Ne Ste B11Albuquerque, NM 87102-2642Phone: (720) 949-9992Fax: (720) 746-6462
- 940 E 3rd St Ste 201Casper, WY 82601-3251Phone: (720) 949-9992Fax: (720) 746-6462
Registry dates
- Enumerated
- 2006-12-01
- Last updated
- 2026-03-25
- Certified
- 2026-03-25
Frequently asked questions
- What is Mary Ann Huang's NPI number?
- Mary Ann Huang's National Provider Identifier (NPI) is 1477621902, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ann Huang's specialty?
- Mary Ann Huang is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Ann Huang located?
- Mary Ann Huang's practice location on file with NPPES is 1601 E 19th Ave Ste 5150, Denver, CO 80218-1201.
- What is Mary Ann Huang's phone number?
- The practice phone number listed in the NPPES registry for Mary Ann Huang is (720) 754-2155.
- Does Mary Ann Huang accept Medicare?
- Mary Ann Huang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ann Huang's NPI active?
- Yes — Mary Ann Huang's NPI (1477621902) is active in the NPPES registry as of the last update on 2026-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.