Doctor profile · Federal record
Dr. Randal Williams, P.A.-C
Medical Physician Assistant (CMS: Physician Assistant) · Medical Physician Assistant · Medical Physician Assistant · Castle Rock, CO
- NPI 1811966385
- Accepts Medicare
- MIPS 93.3 / 100 · 2023
- 26 yrs in practice
- Licensed in 3 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1001 S Perry St, Suite: 101B
Castle Rock, CO 801042668
(303) 688-2228
fax (303) 663-0640
Credentials & registration
- NPI registered
- March 2006 — 20 yrs on file
- Profile last updated
- April 24, 2014
- Year of graduation
- 2000 — 26 yrs since
- Specialty taxonomy
- 363AM0700X — NUCC code
- State licenses (3)
- Colorado #PA.0001279 · Kansas #15-00965 · New Mexico #PA2010-0073
- Medicaid (3)
- NM #71577289 · KS #200362810A · CO #95256237
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1811966385. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
228
Distinct HCPCS
8
Medicare allowed
$18,885
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 81 | 79 | $79 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 48 | 48 | $98 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 23 | 22 | $107 | |
81003 |
Automated urinalysis test | 19 | 18 | $2 | |
87635 |
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 17 | 17 | $50 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 15 | 15 | $145 | |
0241U |
Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected | 14 | 14 | $140 | |
71046 |
X-ray of chest, 2 views | 11 | 11 | $30 |
In context: peer comparison
Among 2 peers in Castle Rock Medical Physician Assistant, average services per provider: 27. This provider delivers 8.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
47
Patients
36
Total drug cost
$578
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 14 | 14 | $155 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 11 | 0 | $244 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 11 | 11 | $109 |
| Cephalexin | Generic | 11 | 11 | $70 |
Frequently asked questions
What is Dr. Randal Williams's medical specialty?
Dr. Randal Williams practices Medical Physician Assistant in Castle Rock, CO.
Where does Dr. Randal Williams practice?
Dr. Randal Williams practices at 1001 S Perry St, Castle Rock, CO 801042668. Office phone: 3036882228.
What is Dr. Randal Williams's NPI?
Dr. Randal Williams's National Provider Identifier (NPI) is 1811966385, issued by NPPES.
Does Dr. Randal Williams accept Medicare assignment?
Yes. Dr. Randal Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Randal Williams commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.