Doctor profile · Federal record
Dr. Giancarlo Dimassa, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Obesity Medicine (Preventive Medicine) Physician · Pasadena, CA
- NPI 1255370797
- Accepts Medicare
- MIPS 86.3 / 100 · 2023
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
817 S Madison Ave
Pasadena, CA 911064404
(310) 753-0885
fax (626) 696-3210
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- July 10, 2025
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A81063
- Medicaid
- CA #00A810630
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1255370797. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,306
Distinct HCPCS
10
Medicare allowed
$111,227
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 213 | 199 | $9 | |
99285 |
Emergency department visit with high level of medical decision making | 174 | 171 | $182 | |
99291 |
Critical care, first 30-74 minutes | 91 | 91 | $224 | |
99284 |
Emergency department visit with moderate level of medical decision making | 65 | 63 | $125 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 61 | 58 | $8 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 55 | 50 | $195 | |
71045 |
X-ray of chest, 1 view | 52 | 52 | $9 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 51 | 51 | $238 | |
36415 |
Insertion of needle into vein for collection of blood sample | 49 | 48 | $8 | |
80053 |
Blood test, comprehensive group of blood chemicals | 45 | 45 | $10 |
In context: peer comparison
Among 18 peers in this city , average services per provider: 68. This provider delivers 19× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
300
Patients
229
Total drug cost
$53,552
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Azithromycin | Generic | 58 | 53 | $245 |
| Cephalexin | Generic | 49 | 49 | $547 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 36 | 35 | $141 |
| Mounjaro (Tirzepatide) | Brand | 30 | 0 | $32,928 |
| Prednisone | Generic | 20 | 17 | $39 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 19 | 19 | $303 |
| Ozempic (Semaglutide) | Brand | 18 | 0 | $18,248 |
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 17 | 17 | $175 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 15 | 15 | $56 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 13 | 12 | $451 |
Frequently asked questions
What is Dr. Giancarlo Dimassa's medical specialty?
Dr. Giancarlo Dimassa practices Emergency Medicine Physician in Pasadena, CA.
Where does Dr. Giancarlo Dimassa practice?
Dr. Giancarlo Dimassa practices at 817 S Madison Ave, Pasadena, CA 911064404. Office phone: 3107530885.
What is Dr. Giancarlo Dimassa's NPI?
Dr. Giancarlo Dimassa's National Provider Identifier (NPI) is 1255370797, issued by NPPES.
Does Dr. Giancarlo Dimassa accept Medicare assignment?
Yes. Dr. Giancarlo Dimassa accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Giancarlo Dimassa commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with high level of medical decision making (HCPCS 99285); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.