Doctor profile · Federal record
Dr. Katherine Matsumoto, FNP-BC
Family Nurse Practitioner (CMS: Nurse Practitioner) · Registered Nurse · Irvine, CA
- NPI 1003322306
- Accepts Medicare
- 9 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2 Osborn St Ste 180
Irvine, CA 926048676
(949) 417-9820
fax (949) 417-9830 - Mailing address
-
Po Box 1995
Suisun City, CA 945854995
Credentials & registration
- NPI registered
- December 2017 — 9 yrs on file
- Profile last updated
- January 16, 2026
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State licenses (2)
- California #95007597 · California #810661
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003322306. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
148
Distinct HCPCS
1
Medicare allowed
$11,682
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 148 | 116 | $79 |
In context: peer comparison
Among 13 peers in this city , average services per provider: 52. This provider delivers 2.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
987
Patients
422
Total drug cost
$15,582
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 153 | 73 | $2,192 |
| Levothyroxine Sodium | Generic | 145 | 54 | $2,695 |
| Amlodipine Besylate | Generic | 89 | 37 | $996 |
| Lisinopril | Generic | 82 | 36 | $928 |
| Losartan Potassium | Generic | 77 | 26 | $1,537 |
| Alendronate Sodium | Generic | 54 | 17 | $685 |
| Rosuvastatin Calcium | Generic | 50 | 26 | $1,273 |
| Escitalopram Oxalate | Generic | 46 | 19 | $689 |
| Omeprazole | Generic | 46 | 16 | $1,037 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 44 | 24 | $1,284 |
Hospital affiliations
Frequently asked questions
What is Dr. Katherine Matsumoto's medical specialty?
Dr. Katherine Matsumoto practices Family Nurse Practitioner in Irvine, CA.
Where does Dr. Katherine Matsumoto practice?
Dr. Katherine Matsumoto practices at 2 Osborn St Ste 180, Irvine, CA 926048676. Office phone: 9494179820.
What is Dr. Katherine Matsumoto's NPI?
Dr. Katherine Matsumoto's National Provider Identifier (NPI) is 1003322306, issued by NPPES.
Does Dr. Katherine Matsumoto accept Medicare assignment?
Yes. Dr. Katherine Matsumoto accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Katherine Matsumoto commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.