Doctor profile · Federal record
Dr. Marcos Siqueiros, MD
Internal Medicine Physician (CMS: Internal Medicine) · Santa Clara, CA
- NPI 1790862647
- Accepts Medicare
- 31 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
710 Lawrence Expy
Santa Clara, CA 950515173
(408) 851-1000 - Mailing address
-
1800 Harrison St Fl 7
Oakland, CA 946123466
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- December 3, 2021
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A61782
- Medicaid
- CA #00A617820
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1790862647. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
11
Distinct HCPCS
1
Medicare allowed
$101
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 11 | 11 | $9 |
In context: peer comparison
Among 14 peers in Santa Clara Internal Medicine Physician, average services per provider: 48. This provider delivers 0.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
3,299
Patients
1,030
Total drug cost
$152,355
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 551 | 184 | $8,252 |
| Rosuvastatin Calcium | Generic | 347 | 105 | $4,791 |
| Levothyroxine Sodium | Generic | 340 | 91 | $7,455 |
| Losartan Potassium | Generic | 318 | 92 | $5,148 |
| Amlodipine Besylate | Generic | 296 | 91 | $4,666 |
| Lisinopril | Generic | 216 | 73 | $2,942 |
| Furosemide | Generic | 174 | 57 | $2,543 |
| Tamsulosin Hcl | Generic | 163 | 44 | $2,528 |
| Atenolol | Generic | 162 | 51 | $2,025 |
| Metoprolol Tartrate | Generic | 160 | 40 | $1,845 |
Hospital affiliations
Frequently asked questions
What is Dr. Marcos Siqueiros's medical specialty?
Dr. Marcos Siqueiros practices Internal Medicine Physician in Santa Clara, CA.
Where does Dr. Marcos Siqueiros practice?
Dr. Marcos Siqueiros practices at 710 Lawrence Expy, Santa Clara, CA 950515173. Office phone: 4088511000.
What is Dr. Marcos Siqueiros's NPI?
Dr. Marcos Siqueiros's National Provider Identifier (NPI) is 1790862647, issued by NPPES.
Does Dr. Marcos Siqueiros accept Medicare assignment?
Yes. Dr. Marcos Siqueiros accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marcos Siqueiros commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010). Source: CMS Medicare Physician & Other Practitioners file.