Doctor profile · Federal record
Dr. Mark Williams, D.O.
Sports Medicine (Family Medicine) Physician (CMS: Sports Medicine) · Sports Medicine (Neuromusculoskeletal Medicine) Physician · Durable Medical Equipment & Medical Supplies · Nampa, ID
- NPI 1114961166
- Accepts Medicare
- 33 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
215 E Hawaii Ave
Nampa, ID 836866011
(208) 463-3291
fax (208) 463-3049
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- September 30, 2014
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207QS0010X — NUCC code
- State licenses (2)
- Idaho #O-157 · Idaho #0-157
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1114961166. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,080
Distinct HCPCS
8
Medicare allowed
$58,754
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 435 | 63 | $1 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 288 | 154 | $117 | |
20610 |
Aspiration and/or injection of fluid from large joint | 130 | 43 | $49 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 76 | 66 | $82 | |
J7323 |
Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose | 62 | 12 | $125 | |
73630 |
X-ray of foot, minimum of 3 views | 40 | 11 | $15 | |
20611 |
Aspiration and/or injection of fluid large joint using ultrasound guidance | 31 | 16 | $82 | |
76942 |
Ultrasonic guidance for needle placement | 18 | 13 | $54 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 135. This provider delivers 8.0× the peer median.Open Payments
Industry payments received
All-time total
$35
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ferring Pharmaceuticals Inc. | 1 | $21.60 | |
| Sawtooth Surgical Solutions Inc | 1 | $13.70 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
135
Patients
57
Total drug cost
$1,391
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 38 | 26 | $133 |
| Tramadol Hcl | Generic | 35 | 18 | $96 |
| Methylprednisolone | Generic | 20 | 13 | $187 |
| Meloxicam | Generic | 17 | 0 | $45 |
| Diclofenac Sodium | Generic | 14 | 0 | $254 |
| Celecoxib | Generic | 11 | 0 | $676 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Williams's medical specialty?
Dr. Mark Williams practices Sports Medicine (Family Medicine) Physician in Nampa, ID.
Where does Dr. Mark Williams practice?
Dr. Mark Williams practices at 215 E Hawaii Ave, Nampa, ID 836866011. Office phone: 2084633291.
What is Dr. Mark Williams's NPI?
Dr. Mark Williams's National Provider Identifier (NPI) is 1114961166, issued by NPPES.
Does Dr. Mark Williams accept Medicare assignment?
Yes. Dr. Mark Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Williams 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 99214); Aspiration and/or injection of fluid from large joint (HCPCS 20610). Source: CMS Medicare Physician & Other Practitioners file.