Doctor profile · Federal record
Dr. Mark Diaz, PA-C
Physician Assistant · Madison, WI
- NPI 1700370020
- 8 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
77 S Oakbridge CT Apt 105
Madison, WI 537172030
(562) 659-3459
Credentials & registration
- NPI registered
- June 2018 — 8 yrs on file
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- Wisconsin #4404-23
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1700370020. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
298
Distinct HCPCS
4
Medicare allowed
$29,593
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 129 | 124 | $138 | |
99284 |
Emergency department visit with moderate level of medical decision making | 105 | 105 | $96 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 38 | 37 | $7 | |
99283 |
Emergency department visit with low level of medical decision making | 26 | 26 | $56 |
In context: peer comparison
Among 114 peers in this city , average services per provider: 113. This provider delivers 2.6× the peer median.Open Payments
Industry payments received
All-time total
$109
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 1 | $108.84 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
90
Patients
90
Total drug cost
$894
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 22 | 22 | $184 |
| Prednisone | Generic | 16 | 16 | $64 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 14 | 14 | $154 |
| Cefdinir | Generic | 13 | 13 | $246 |
| Doxycycline Hyclate | Generic | 13 | 13 | $185 |
| Ondansetron Odt (Ondansetron) | Brand | 12 | 12 | $61 |
Frequently asked questions
What is Dr. Mark Diaz's medical specialty?
Dr. Mark Diaz practices Physician Assistant in Madison, WI.
Where does Dr. Mark Diaz practice?
Dr. Mark Diaz practices at 77 S Oakbridge CT Apt 105, Madison, WI 537172030. Office phone: 5626593459.
What is Dr. Mark Diaz's NPI?
Dr. Mark Diaz's National Provider Identifier (NPI) is 1700370020, issued by NPPES.
What procedures does Dr. Mark Diaz commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010). Source: CMS Medicare Physician & Other Practitioners file.