Doctor profile · Federal record
Dr. Joseph Mashinchi, P.A.
Physician Assistant · Surgical Physician Assistant · Oakland, CA
- NPI 1184004913
- 11 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
747 52Nd St
Oakland, CA 946091809
(510) 428-3238 - Additional location
-
1441 Florida Ave
Modesto, CA 953504404
(209) 578-1211 - Mailing address
-
1441 Florida Ave
Modesto, CA 953504404
Credentials & registration
- NPI registered
- June 2015 — 11 yrs on file
- Profile last updated
- September 18, 2025
- Specialty taxonomy
- 363A00000X — NUCC code
- State licenses (2)
- California #52558 · California #PA52558
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1184004913. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
406
Distinct HCPCS
10
Medicare allowed
$23,773
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 107 | 29 | $1 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 73 | 64 | $88 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 41 | 39 | $123 | |
20605 |
Aspiration and/or injection of fluid from medium joint | 40 | 24 | $54 | |
99211 |
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | 31 | 28 | $24 | |
20550 |
Injection into tendon or ligament | 29 | 24 | $55 | |
20600 |
Aspiration and/or injection of fluid from small joint | 27 | 23 | $51 | |
J7323 |
Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose | 23 | 15 | $128 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 21 | 20 | $56 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 14 | 14 | $159 |
In context: peer comparison
Among 22 peers in this city , average services per provider: 44. This provider delivers 9.2× the peer median.Open Payments
Industry payments received
All-time total
$22
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Bioventus LLC | 1 | $21.74 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
70
Patients
37
Total drug cost
$844
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 43 | 37 | $367 |
| Doxycycline Hyclate | Generic | 15 | 0 | $374 |
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 12 | 0 | $103 |
Frequently asked questions
What is Dr. Joseph Mashinchi's medical specialty?
Dr. Joseph Mashinchi practices Physician Assistant in Oakland, CA.
Where does Dr. Joseph Mashinchi practice?
Dr. Joseph Mashinchi practices at 747 52Nd St, Oakland, CA 946091809. Office phone: 5104283238.
What is Dr. Joseph Mashinchi's NPI?
Dr. Joseph Mashinchi's National Provider Identifier (NPI) is 1184004913, issued by NPPES.
What procedures does Dr. Joseph Mashinchi commonly perform?
Top Medicare-reported procedures in 2023: Injection, triamcinolone acetonide, not otherwise specified, 10 mg (HCPCS J3301); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.