Doctor profile · Federal record
Dr. Martha Hierro, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Santa Monica, CA
- NPI 1770562431
- Accepts Medicare
- 39 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2021 Santa Monica Blvd, Ste 335E
Santa Monica, CA 904042146
(310) 471-9917
fax (310) 319-2468
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- August 25, 2020
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #G65495
- Medicaid
- CA #00G654950
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770562431. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
358
Distinct HCPCS
8
Medicare allowed
$59,149
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 134 | 75 | $139 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 86 | 60 | $194 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 48 | 48 | $180 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 33 | 30 | $112 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 17 | 17 | $237 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 15 | 15 | $184 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 13 | 13 | $192 | |
G0121 |
Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 12 | 12 | $192 |
In context: peer comparison
Among 10 peers in Santa Monica Gastroenterology Physician, average services per provider: 98. This provider delivers 3.7× the peer median.Open Payments
Industry payments received
All-time total
$81
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Phathom Pharmaceuticals, INC. | 2 | $45.06 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 1 | $18.62 | |
| Abbvie INC. | 1 | $17.18 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
156
Patients
45
Total drug cost
$16,071
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 66 | 30 | $2,069 |
| Famotidine | Generic | 33 | 15 | $660 |
| Omeprazole | Generic | 24 | 0 | $524 |
| Creon (Lipase/Protease/Amylase) | Brand | 11 | 0 | $8,489 |
| Dexlansoprazole Dr (Dexlansoprazole) | Brand | 11 | 0 | $4,037 |
| Dicyclomine Hcl | Generic | 11 | 0 | $292 |
Frequently asked questions
What is Dr. Martha Hierro's medical specialty?
Dr. Martha Hierro practices Gastroenterology Physician in Santa Monica, CA.
Where does Dr. Martha Hierro practice?
Dr. Martha Hierro practices at 2021 Santa Monica Blvd, Santa Monica, CA 904042146. Office phone: 3104719917.
What is Dr. Martha Hierro's NPI?
Dr. Martha Hierro's National Provider Identifier (NPI) is 1770562431, issued by NPPES.
Does Dr. Martha Hierro accept Medicare assignment?
Yes. Dr. Martha Hierro accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Martha Hierro commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.