Doctor profile · Federal record
Dr. Amy Matayoshi, M.D.
Nephrology Physician (CMS: Nephrology) · Oceanside, CA
- NPI 1417921982
- Accepts Medicare
- 31 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3300 Vista Way, Suite B
Oceanside, CA 920563752
(760) 967-9900
fax (760) 967-6769 - Mailing address
-
9373 Hazard Way Ste 200
San Diego, CA 921231226
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- February 2, 2026
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207RN0300X — NUCC code
- State license (1)
- California #A60790
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1417921982. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,370
Distinct HCPCS
10
Medicare allowed
$316,543
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90960 |
Dialysis services, 4 or more physician visits per month (20 years or older) | 538 | 63 | $367 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 301 | 117 | $97 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 186 | 62 | $82 | |
90966 |
Home dialysis services per month (20 years or older) | 101 | 13 | $309 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 70 | 28 | $123 | |
90961 |
Dialysis services, 2-3 physician visits per month (20 years or older) | 64 | 37 | $303 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 36 | 31 | $134 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 31 | 31 | $177 | |
90935 |
Hemodialysis procedure with physician evaluation | 25 | 18 | $74 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 18 | 14 | $179 |
In context: peer comparison
Among 2 peers in Oceanside Nephrology Physician, average services per provider: 126. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$50
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Nxstage Medical, INC. | 1 | $33.49 | |
| Travere Therapeutics, INC. | 1 | $16.89 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,498
Patients
511
Total drug cost
$276,326
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 208 | 77 | $3,830 |
| Hydralazine Hcl | Generic | 162 | 57 | $4,458 |
| Sevelamer Carbonate | Generic | 158 | 47 | $85,037 |
| Furosemide | Generic | 153 | 50 | $1,735 |
| Lisinopril | Generic | 126 | 44 | $2,229 |
| Allopurinol | Generic | 124 | 41 | $1,935 |
| Gabapentin | Generic | 95 | 37 | $1,791 |
| Calcitriol | Generic | 87 | 29 | $3,230 |
| Losartan Potassium | Generic | 73 | 26 | $1,401 |
| Metoprolol Tartrate | Generic | 67 | 18 | $1,324 |
Frequently asked questions
What is Dr. Amy Matayoshi's medical specialty?
Dr. Amy Matayoshi practices Nephrology Physician in Oceanside, CA.
Where does Dr. Amy Matayoshi practice?
Dr. Amy Matayoshi practices at 3300 Vista Way, Oceanside, CA 920563752. Office phone: 7609679900.
What is Dr. Amy Matayoshi's NPI?
Dr. Amy Matayoshi's National Provider Identifier (NPI) is 1417921982, issued by NPPES.
Does Dr. Amy Matayoshi accept Medicare assignment?
Yes. Dr. Amy Matayoshi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Amy Matayoshi commonly perform?
Top Medicare-reported procedures in 2023: Dialysis services, 4 or more physician visits per month (20 years or older) (HCPCS 90960); Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.