Doctor profile · Federal record
Dr. Mary Ann Huang, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Denver, CO
- NPI 1477621902
- Accepts Medicare
- MIPS 77.2 / 100 · 2023
- 30 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 5 locations .
- Primary practice
-
1601 E 19Th Ave Ste 5150
Denver, CO 802181201
(720) 754-2155
fax (720) 754-2106 - Additional location
-
315 N 25Th St Ste 201
Billings, MT 591011328
(720) 949-9992
fax (720) 746-6462 - Additional location
-
940 E 3Rd St Ste 201
Casper, WY 826013251
(720) 949-9992
fax (720) 746-6462 - Additional location
-
1601 E 19Th Ave Ste 5050
Denver, CO 802181200 - Additional location
-
801 Encino Pl Ne Ste B11
Albuquerque, NM 871022642
(720) 949-9992
fax (720) 746-6462 - Mailing address
-
1601 E 19Th Ave Ste 5050
Denver, CO 802181200
Show 2 more locations
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- March 25, 2026
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Colorado #DR.0056376 · Michigan #4301076336
- Medicaid (2)
- MI #472437710 · CO #56880065
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477621902. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
410
Distinct HCPCS
10
Medicare allowed
$44,812
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 61 | 50 | $58 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 54 | 50 | $92 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 49 | 48 | $111 | |
99202 |
New patient office or other outpatient visit, 15-29 minutes | 47 | 47 | $74 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 43 | 42 | $83 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 38 | 38 | $114 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 37 | 37 | $151 | |
43235 |
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 26 | 25 | $116 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 24 | 24 | $253 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 16 | 15 | $131 |
In context: peer comparison
Among 21 peers in this city , average services per provider: 105. This provider delivers 3.9× the peer median.Open Payments
Industry payments received
All-time total
$61,150
Transactions
105
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, Inc. | 31 | $26,662.68 | |
| Madrigal Pharmaceuticals | 26 | $21,055.15 | |
| Intercept Pharmaceuticals, Inc. | 11 | $10,042.94 | |
| ABBVIE INC. | 14 | $2,078.52 | |
| Ipsen Biopharmaceuticals, Inc | 6 | $681.53 | |
| GENZYME CORPORATION | 5 | $208.12 | |
| Exact Sciences Corporation | 2 | $193.34 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $53.07 | |
| Braintree Laboratories, Inc. | 2 | $43.50 | |
| ORPHALAN INC | 1 | $28.38 | |
| Alexion Pharmaceuticals, Inc. | 1 | $26.69 | |
| Janssen Biotech, Inc. | 1 | $26.17 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 1 | $19.97 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $16.06 | |
| QOL Medical, LLC | 1 | $13.48 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
578
Patients
200
Total drug cost
$161,209
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 119 | 46 | $2,318 |
| Omeprazole | Generic | 62 | 21 | $858 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 55 | 54 | $4,339 |
| Spironolactone | Generic | 51 | 15 | $1,447 |
| Furosemide | Generic | 48 | 16 | $452 |
| Azathioprine | Generic | 38 | 0 | $2,231 |
| Xifaxan (Rifaximin) | Brand | 33 | 0 | $106,455 |
| Ursodiol | Generic | 31 | 0 | $7,108 |
| Linzess (Linaclotide) | Brand | 28 | 0 | $24,694 |
| Sutab (Sod Sulf/Pot Chloride/Mag Sulf) | Brand | 27 | 27 | $4,602 |
Hospital affiliations
Frequently asked questions
What is Dr. Mary Ann Huang's medical specialty?
Dr. Mary Ann Huang practices Gastroenterology Physician in Denver, CO.
Where does Dr. Mary Ann Huang practice?
Dr. Mary Ann Huang practices at 1601 E 19Th Ave Ste 5150, Denver, CO 802181201. Office phone: 7207542155.
What is Dr. Mary Ann Huang's NPI?
Dr. Mary Ann Huang's National Provider Identifier (NPI) is 1477621902, issued by NPPES.
Does Dr. Mary Ann Huang accept Medicare assignment?
Yes. Dr. Mary Ann Huang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Ann Huang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99212); Established patient office or other outpatient visit (HCPCS 99213); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.