Doctor profile · Federal record
Dr. Christopher Nguyen, MD
Geriatric Medicine (Internal Medicine) Physician (CMS: Internal Medicine) · Mission Viejo, CA
- NPI 1588624100
- Accepts Medicare
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
23512 Madero
Mission Viejo, CA 926912743
(949) 583-1600
fax (949) 454-8067
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- January 16, 2026
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0300X — NUCC code
- State license (1)
- California #A74293
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1588624100. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,715
Distinct HCPCS
10
Medicare allowed
$185,880
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 707 | 351 | $139 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 440 | 237 | $98 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 136 | 108 | $60 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 76 | 76 | $283 | |
G0009 |
Administration of pneumococcal vaccine | 76 | 76 | $33 | |
36415 |
Insertion of needle into vein for collection of blood sample | 61 | 51 | $5 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 48 | 48 | $76 | |
G0008 |
Administration of influenza virus vaccine | 48 | 48 | $33 | |
81002 |
Urinalysis, manual test | 45 | 35 | $3 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 36 | 35 | $16 |
In context: peer comparison
Among 1 peers in Mission Viejo Geriatric Medicine (Internal Medicine) Physician, average services per provider: 142. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$1,145
Transactions
47
Manufacturers
13
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 15 | $379.57 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 7 | $184.72 | |
| Bayer Healthcare Pharmaceuticals INC. | 7 | $137.74 | |
| Janssen Pharmaceuticals, INC | 2 | $109.08 | |
| Dexcom, INC. | 4 | $89.16 | |
| Janssen Biotech, INC. | 3 | $69.41 | |
| Beta Bionics, INC. | 2 | $35.94 | |
| Pfizer INC. | 2 | $33.06 | |
| Exact Sciences Corporation | 1 | $30.42 | |
| Inspire Medical Systems, INC. | 1 | $22.42 | |
| Ipsen Biopharmaceuticals, INC | 1 | $21.20 | |
| Amgen INC. | 1 | $16.75 | |
| Merck Sharp & Dohme LLC | 1 | $15.51 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,226
Patients
1,635
Total drug cost
$100,544
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 865 | 258 | $14,945 |
| Amlodipine Besylate | Generic | 647 | 193 | $6,791 |
| Levothyroxine Sodium | Generic | 621 | 176 | $12,296 |
| Rosuvastatin Calcium | Generic | 612 | 191 | $24,991 |
| Lisinopril | Generic | 346 | 110 | $4,045 |
| Losartan Potassium | Generic | 317 | 95 | $6,731 |
| Alendronate Sodium | Generic | 236 | 74 | $3,978 |
| Tamsulosin Hcl | Generic | 232 | 79 | $4,860 |
| Gabapentin | Generic | 217 | 82 | $5,167 |
| Simvastatin | Generic | 202 | 57 | $2,731 |
Frequently asked questions
What is Dr. Christopher Nguyen's medical specialty?
Dr. Christopher Nguyen practices Geriatric Medicine (Internal Medicine) Physician in Mission Viejo, CA.
Where does Dr. Christopher Nguyen practice?
Dr. Christopher Nguyen practices at 23512 Madero, Mission Viejo, CA 926912743. Office phone: 9495831600.
What is Dr. Christopher Nguyen's NPI?
Dr. Christopher Nguyen's National Provider Identifier (NPI) is 1588624100, issued by NPPES.
Does Dr. Christopher Nguyen accept Medicare assignment?
Yes. Dr. Christopher Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Telephone medical discussion with physician (HCPCS 99441). Source: CMS Medicare Physician & Other Practitioners file.