Doctor profile · Federal record
Dr. Grant Thomas, DO
Family Medicine Physician (CMS: Family Practice) · Student in an Organized Health Care Education/Training Program · Castle Rock, CO
- NPI 1972253169
- Accepts Medicare
- 4 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
4318 Trail Boss Dr
Castle Rock, CO 801047512
(303) 338-4545 - Additional location
-
601 E Hampden Ave Ste 470
Englewood, CO 801132797
(303) 788-3100
fax (303) 788-3197 - Mailing address
-
10350 E Dakota Ave
Denver, CO 802471314
Credentials & registration
- NPI registered
- March 2022 — 4 yrs on file
- Profile last updated
- August 29, 2025
- Year of graduation
- 2022 — 4 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Colorado #DR.0074262
- Medicaid
- CO #9000207700
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1972253169. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$132
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Zimmer Biomet Holdings, Inc. | 1 | $123.67 | |
| Organon Llc | 1 | $8.39 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
317
Patients
44
Total drug cost
$18,918
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 44 | 19 | $471 |
| Lisinopril | Generic | 36 | 13 | $216 |
| Levothyroxine Sodium | Generic | 31 | 12 | $556 |
| Metformin Hcl | Generic | 27 | 0 | $256 |
| Amlodipine Besylate | Generic | 25 | 0 | $145 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 18 | 0 | $366 |
| Gabapentin | Generic | 18 | 0 | $380 |
| Eliquis (Apixaban) | Brand | 17 | 0 | $15,226 |
| Trazodone Hcl | Generic | 17 | 0 | $95 |
| Losartan Potassium | Generic | 16 | 0 | $181 |
Frequently asked questions
What is Dr. Grant Thomas's medical specialty?
Dr. Grant Thomas practices Family Medicine Physician in Castle Rock, CO.
Where does Dr. Grant Thomas practice?
Dr. Grant Thomas practices at 4318 Trail Boss Dr, Castle Rock, CO 801047512. Office phone: 3033384545.
What is Dr. Grant Thomas's NPI?
Dr. Grant Thomas's National Provider Identifier (NPI) is 1972253169, issued by NPPES.
Does Dr. Grant Thomas accept Medicare assignment?
Yes. Dr. Grant Thomas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.