Doctor profile · Federal record
Dr. Katherine Nguyen, M.D.
Rheumatology Physician (CMS: Rheumatology) · San Diego, CA
- NPI 1356319875
- Accepts Medicare
- 34 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
200 W Arbor Dr
San Diego, CA 92103
(619) 543-6248 - Mailing address
-
Po Box 232410
San Diego, CA 921932410
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- June 8, 2018
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- California #G079343
- Medicaid
- CA #00G793430
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1356319875. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
985
Distinct HCPCS
10
Medicare allowed
$103,039
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 336 | 147 | $101 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 304 | 152 | $124 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 58 | 48 | $87 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 58 | 12 | $1 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 51 | 36 | $174 | |
20610 |
Aspiration and/or injection of fluid from large joint | 45 | 12 | $45 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 40 | 28 | $149 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 38 | 29 | $68 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 22 | 20 | $112 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 18 | 18 | $172 |
In context: peer comparison
Among 13 peers in San Diego Rheumatology Physician, average services per provider: 1,710. This provider delivers 0.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,269
Patients
327
Total drug cost
$786,637
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Generic | 268 | 84 | $20,858 |
| Methotrexate (Methotrexate Sodium) | Brand | 239 | 64 | $9,663 |
| Prednisone | Generic | 176 | 63 | $2,271 |
| Leflunomide | Generic | 113 | 30 | $11,492 |
| Gabapentin | Generic | 62 | 19 | $1,598 |
| Diclofenac Sodium | Generic | 56 | 18 | $2,893 |
| Enbrel Sureclick (Etanercept) | Brand | 47 | 0 | $353,097 |
| Orencia Clickject (Abatacept) | Brand | 46 | 0 | $369,032 |
| Pilocarpine Hcl | Generic | 43 | 15 | $7,840 |
| Allopurinol | Generic | 39 | 11 | $953 |
Hospital affiliations
Frequently asked questions
What is Dr. Katherine Nguyen's medical specialty?
Dr. Katherine Nguyen practices Rheumatology Physician in San Diego, CA.
Where does Dr. Katherine Nguyen practice?
Dr. Katherine Nguyen practices at 200 W Arbor Dr, San Diego, CA 92103. Office phone: 6195436248.
What is Dr. Katherine Nguyen's NPI?
Dr. Katherine Nguyen's National Provider Identifier (NPI) is 1356319875, issued by NPPES.
Does Dr. Katherine Nguyen accept Medicare assignment?
Yes. Dr. Katherine Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Katherine 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 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.