Doctor profile · Federal record
Dr. Richard Nguyen, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Pediatrics Physician · Oxnard, CA
- NPI 1699960708
- Accepts Medicare
- MIPS 80.8 / 100 · 2023
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
719 N A St
Oxnard, CA 930304309
(805) 485-9123
Credentials & registration
- NPI registered
- September 2007 — 19 yrs on file
- Profile last updated
- September 12, 2007
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A56329
- Medicaid
- CA #00A563290
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699960708. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
9,529
Distinct HCPCS
10
Medicare allowed
$655,975
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99484 |
Care management services for behavioral health conditions, 20 minutes or more clinical staff time directed by health care professional | 2,344 | 240 | $47 | |
99491 |
Chronic care management services for two or more chronic conditions, first 30 minutes provided personally by health care professional, per calendar month | 2,154 | 210 | $91 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 954 | 225 | $139 | |
96372 |
Injection of drug or substance under skin or into muscle | 924 | 144 | $16 | |
J3420 |
Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | 536 | 137 | $2 | |
99497 |
Advance care planning, first 30 minutes | 433 | 227 | $89 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 241 | 129 | $195 | |
82950 |
Blood glucose (sugar) level after receiving dose of glucose | 207 | 119 | $5 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 200 | 200 | $142 | |
J1885 |
Injection, ketorolac tromethamine, per 15 mg | 186 | 51 | $1 |
In context: peer comparison
Among 12 peers in Oxnard Internal Medicine Physician, average services per provider: 202. This provider delivers 47× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,008
Patients
563
Total drug cost
$42,235
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 333 | 80 | $6,284 |
| Omeprazole | Generic | 206 | 49 | $5,157 |
| Metformin Hcl | Generic | 155 | 41 | $2,955 |
| Levothyroxine Sodium | Generic | 149 | 26 | $2,211 |
| Fluticasone Propionate | Generic | 146 | 74 | $3,270 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 125 | 26 | $4,512 |
| Alendronate Sodium | Generic | 116 | 46 | $2,680 |
| Amlodipine Besylate | Generic | 109 | 28 | $1,607 |
| Diclofenac Sodium | Generic | 104 | 23 | $2,818 |
| Gabapentin | Generic | 100 | 18 | $1,545 |
Hospital affiliations
Frequently asked questions
What is Dr. Richard Nguyen's medical specialty?
Dr. Richard Nguyen practices Internal Medicine Physician in Oxnard, CA.
Where does Dr. Richard Nguyen practice?
Dr. Richard Nguyen practices at 719 N A St, Oxnard, CA 930304309. Office phone: 8054859123.
What is Dr. Richard Nguyen's NPI?
Dr. Richard Nguyen's National Provider Identifier (NPI) is 1699960708, issued by NPPES.
Does Dr. Richard Nguyen accept Medicare assignment?
Yes. Dr. Richard Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Richard Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Care management services for behavioral health conditions (HCPCS 99484); Chronic care management services for two or more chronic conditions (HCPCS 99491); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.