Doctor profile · Federal record
Dr. Luis Martinez-Sierra, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Ponce, PR
- NPI 1376673335
- Accepts Medicare
- 53 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
Santa Maria Medical, 450 Calle Ferrocarril, Ste 210
Ponce, PR 007171105
(787) 840-5042
fax (787) 841-6849
Credentials & registration
- NPI registered
- March 2007 — 19 yrs on file
- Profile last updated
- July 9, 2007
- Year of graduation
- 1973 — 53 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Puerto Rico #4589
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1376673335. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
28
Distinct HCPCS
2
Medicare allowed
$1,578
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
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 | 17 | 17 | $56 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 11 | 11 | $57 |
In context: peer comparison
Among 6 peers in Ponce Gastroenterology Physician, average services per provider: 28. This provider delivers 1.0× the peer median.Open Payments
Industry payments received
All-time total
$223
Transactions
5
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Madrigal Pharmaceuticals | 2 | $122.94 | |
| Medtronic, INC. | 3 | $99.60 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,417
Patients
737
Total drug cost
$20,731
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Glycopyrrolate | Generic | 301 | 132 | $5,504 |
| Famotidine | Generic | 249 | 77 | $2,824 |
| Meperidine Hcl (Meperidine Hcl/Pf) | Brand | 213 | 206 | $953 |
| Pantoprazole Sodium | Generic | 197 | 66 | $1,481 |
| Midazolam Hcl | Generic | 150 | 149 | $473 |
| Fentanyl Citrate (Fentanyl Citrate/Pf) | Brand | 75 | 75 | $281 |
| Esomeprazole Magnesium | Generic | 52 | 0 | $827 |
| Omeprazole | Generic | 40 | 12 | $261 |
| Cholestyramine Light (Cholestyramine/Aspartame) | Brand | 36 | 20 | $3,546 |
| Metoclopramide Hcl | Generic | 27 | 0 | $235 |
Frequently asked questions
What is Dr. Luis Martinez-Sierra's medical specialty?
Dr. Luis Martinez-Sierra practices Gastroenterology Physician in Ponce, PR.
Where does Dr. Luis Martinez-Sierra practice?
Dr. Luis Martinez-Sierra practices at Santa Maria Medical, Ponce, PR 007171105. Office phone: 7878405042.
What is Dr. Luis Martinez-Sierra's NPI?
Dr. Luis Martinez-Sierra's National Provider Identifier (NPI) is 1376673335, issued by NPPES.
Does Dr. Luis Martinez-Sierra accept Medicare assignment?
Yes. Dr. Luis Martinez-Sierra accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Luis Martinez-Sierra commonly perform?
Top Medicare-reported procedures in 2023: 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 99212). Source: CMS Medicare Physician & Other Practitioners file.