Doctor profile · Federal record
Dr. Joaquin Castillo Marroquin, DO
Emergency Medicine Physician (CMS: Emergency Medicine) · Student in an Organized Health Care Education/Training Program · Corona, CA
- NPI 1316407323
- Accepts Medicare
- 7 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
800 S Main St
Corona, CA 928823420
(951) 737-4343 - Mailing address
-
13533 New Haven Dr
Moreno Valley, CA 925533408
Credentials & registration
- NPI registered
- March 2019 — 7 yrs on file
- Profile last updated
- July 10, 2023
- Year of graduation
- 2019 — 7 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #202A20916
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1316407323. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
163
Distinct HCPCS
4
Medicare allowed
$23,245
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 81 | 80 | $178 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 30 | 30 | $8 | |
99284 |
Emergency department visit with moderate level of medical decision making | 29 | 27 | $123 | |
99291 |
Critical care, first 30-74 minutes | 23 | 23 | $217 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 113. This provider delivers 1.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
24
Patients
24
Total drug cost
$756
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cefpodoxime Proxetil | Generic | 12 | 12 | $721 |
| Ibuprofen | Generic | 12 | 12 | $34 |
Hospital affiliations
Frequently asked questions
What is Dr. Joaquin Castillo Marroquin's medical specialty?
Dr. Joaquin Castillo Marroquin practices Emergency Medicine Physician in Corona, CA.
Where does Dr. Joaquin Castillo Marroquin practice?
Dr. Joaquin Castillo Marroquin practices at 800 S Main St, Corona, CA 928823420. Office phone: 9517374343.
What is Dr. Joaquin Castillo Marroquin's NPI?
Dr. Joaquin Castillo Marroquin's National Provider Identifier (NPI) is 1316407323, issued by NPPES.
Does Dr. Joaquin Castillo Marroquin accept Medicare assignment?
Yes. Dr. Joaquin Castillo Marroquin accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joaquin Castillo Marroquin commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.