Doctor profile · Federal record
Dr. Mark Diaz, PA-C, MS, MPH
Physician Assistant · Surgical Physician Assistant · Davis, CA
- NPI 1164942116
- Accepts Medicare
- 9 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2020 Sutter Pl Ste 104
Davis, CA 956166217
(530) 750-5900 - Mailing address
-
10470 Old Placerville RD, Ste 100
Sacramento, CA 958272539
Credentials & registration
- NPI registered
- June 2017 — 9 yrs on file
- Profile last updated
- July 3, 2017
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- California #54564
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1164942116. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,953
Distinct HCPCS
10
Medicare allowed
$35,337
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J0665 |
Injection, bupivicaine, not otherwise specified, 0.5 mg | 2,410 | 22 | $0 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 177 | 111 | $81 | |
20610 |
Aspiration and/or injection of fluid from large joint | 94 | 59 | $62 | |
J1030 |
Injection, methylprednisolone acetate, 40 mg | 67 | 55 | $7 | |
J1885 |
Injection, ketorolac tromethamine, per 15 mg | 64 | 26 | $1 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 42 | 42 | $99 | |
27447 |
Replacement of knee joint, both sides of knee | 28 | 25 | $181 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 16 | 16 | $116 | |
20985 |
Computer-assisted surgery for muscle and bone procedure | 14 | 14 | $20 | |
27130 |
Replacement of thigh bone and hip joint with prosthesis | 14 | 14 | $181 |
In context: peer comparison
Among 3 peers in Davis Physician Assistant, average services per provider: 213. This provider delivers 14× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
329
Patients
226
Total drug cost
$2,934
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 138 | 76 | $1,239 |
| Ondansetron Odt (Ondansetron) | Brand | 116 | 91 | $1,140 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 41 | 30 | $316 |
| Ketorolac Tromethamine | Generic | 17 | 15 | $182 |
| Tramadol Hcl | Generic | 17 | 14 | $57 |
Frequently asked questions
What is Dr. Mark Diaz's medical specialty?
Dr. Mark Diaz practices Physician Assistant in Davis, CA.
Where does Dr. Mark Diaz practice?
Dr. Mark Diaz practices at 2020 Sutter Pl Ste 104, Davis, CA 956166217. Office phone: 5307505900.
What is Dr. Mark Diaz's NPI?
Dr. Mark Diaz's National Provider Identifier (NPI) is 1164942116, issued by NPPES.
Does Dr. Mark Diaz accept Medicare assignment?
Yes. Dr. Mark Diaz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Diaz commonly perform?
Top Medicare-reported procedures in 2023: Injection, bupivicaine, not otherwise specified, 0.5 mg (HCPCS J0665); Established patient office or other outpatient visit (HCPCS 99213); Aspiration and/or injection of fluid from large joint (HCPCS 20610). Source: CMS Medicare Physician & Other Practitioners file.