Doctor profile · Federal record
Dr. Mary Hu, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Fremont, CA
- NPI 1659339059
- Accepts Medicare
- 24 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3200 Kearney St
Fremont, CA 945382299
(510) 490-1222 - Mailing address
-
325 Distel Cir
Los Altos, CA 940221408
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- May 27, 2020
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A84011
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659339059. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
357
Distinct HCPCS
8
Medicare allowed
$48,058
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45380 |
Biopsy of large bowel using a flexible endoscope | 83 | 83 | $141 | |
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 71 | 71 | $6 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 67 | 62 | $211 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 36 | 34 | $108 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 36 | 36 | $285 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 34 | 22 | $37 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 19 | 19 | $198 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 11 | 11 | $240 |
In context: peer comparison
Among 9 peers in Fremont Gastroenterology Physician, average services per provider: 79. This provider delivers 4.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
527
Patients
197
Total drug cost
$151,172
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 127 | 52 | $1,646 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 100 | 100 | $8,024 |
| Pantoprazole Sodium | Generic | 68 | 21 | $1,554 |
| Famotidine | Generic | 59 | 24 | $1,528 |
| Tenofovir Disoproxil Fumarate | Generic | 34 | 0 | $16,002 |
| Mesalamine | Generic | 33 | 0 | $50,283 |
| Entecavir | Generic | 25 | 0 | $10,642 |
| Vemlidy (Tenofovir Alafenamide) | Brand | 22 | 0 | $32,329 |
| Linzess (Linaclotide) | Brand | 19 | 0 | $26,558 |
| Esomeprazole Magnesium | Generic | 14 | 0 | $1,098 |
Frequently asked questions
What is Dr. Mary Hu's medical specialty?
Dr. Mary Hu practices Gastroenterology Physician in Fremont, CA.
Where does Dr. Mary Hu practice?
Dr. Mary Hu practices at 3200 Kearney St, Fremont, CA 945382299. Office phone: 5104901222.
What is Dr. Mary Hu's NPI?
Dr. Mary Hu's National Provider Identifier (NPI) is 1659339059, issued by NPPES.
Does Dr. Mary Hu accept Medicare assignment?
Yes. Dr. Mary Hu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Hu commonly perform?
Top Medicare-reported procedures in 2023: Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.