Doctor profile · Federal record
Dr. Gregory Larson, PA-C
Physician Assistant · Spearfish, SD
- NPI 1134577448
- Accepts Medicare
- MIPS 82.6 / 100 · 2023
- 15 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
550 E Colorado Blvd
Spearfish, SD 577832776
(605) 717-8860
Credentials & registration
- NPI registered
- May 2016 — 10 yrs on file
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- South Dakota #1039
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134577448. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,871
Distinct HCPCS
10
Medicare allowed
$91,490
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 818 | 126 | $6 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 315 | 269 | $78 | |
17000 |
Destruction of precancer skin growth, 1 growth | 199 | 177 | $48 | |
17110 |
Destruction of skin growth, 1-14 growths | 112 | 102 | $98 | |
11102 |
Biopsy of related skin growth, first growth | 108 | 98 | $83 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 87 | 70 | $111 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 51 | 51 | $98 | |
11103 |
Biopsy of related skin growth, each additional growth | 42 | 24 | $45 | |
17004 |
Destruction of precancer skin growth, 15 or more growths | 41 | 38 | $151 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 38 | 37 | $50 |
In context: peer comparison
Among 2 peers in Spearfish Physician Assistant, average services per provider: 120. This provider delivers 16× the peer median.Open Payments
Industry payments received
All-time total
$435
Transactions
12
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Incyte Corporation | 5 | $139.41 | |
| Abbvie INC. | 1 | $124.82 | |
| Novartis Pharmaceuticals Corporation | 1 | $45.84 | |
| Ucb, INC. | 2 | $45.55 | |
| Genzyme Corporation | 1 | $33.21 | |
| Lilly USA, LLC | 1 | $23.36 | |
| Sun Pharmaceutical Industries INC. | 1 | $22.61 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
363
Patients
221
Total drug cost
$230,271
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Triamcinolone Acetonide | Generic | 64 | 53 | $732 |
| Doxycycline Hyclate | Generic | 51 | 24 | $1,844 |
| Fluorouracil | Generic | 50 | 48 | $5,068 |
| Dupixent Pen (Dupilumab) | Brand | 39 | 0 | $194,349 |
| Clobetasol Propionate | Generic | 36 | 23 | $2,383 |
| Ketoconazole | Generic | 26 | 16 | $767 |
| Clotrimazole-Betamethasone (Clotrimazole/Betamethasone Dip) | Brand | 16 | 12 | $334 |
| Clindamycin Phosphate | Generic | 15 | 11 | $428 |
| Fluocinonide | Generic | 14 | 11 | $977 |
| Imiquimod | Generic | 14 | 12 | $838 |
Hospital affiliations
Frequently asked questions
What is Dr. Gregory Larson's medical specialty?
Dr. Gregory Larson practices Physician Assistant in Spearfish, SD.
Where does Dr. Gregory Larson practice?
Dr. Gregory Larson practices at 550 E Colorado Blvd, Spearfish, SD 577832776. Office phone: 6057178860.
What is Dr. Gregory Larson's NPI?
Dr. Gregory Larson's National Provider Identifier (NPI) is 1134577448, issued by NPPES.
Does Dr. Gregory Larson accept Medicare assignment?
Yes. Dr. Gregory Larson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Larson commonly perform?
Top Medicare-reported procedures in 2023: Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99213); Destruction of precancer skin growth, 1 growth (HCPCS 17000). Source: CMS Medicare Physician & Other Practitioners file.