Doctor profile · Federal record
Dr. Olivia Williamson, PA-C
Physician Assistant · Sebewaing, MI
- NPI 1477338184
- Accepts Medicare
- 3 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
106 E Main St
Sebewaing, MI 487591568
(989) 883-3800 - Additional location
-
4005 Orchard Dr
Midland, MI 486702001
(989) 839-3100 - Additional location
-
4497 Sheffield Pl
Bay City, MI 487062554
(989) 894-8400 - Mailing address
-
136 Adam Ridge Dr
Sebewaing, MI 487591148
Credentials & registration
- NPI registered
- August 2023 — 3 yrs on file
- Profile last updated
- September 15, 2024
- Year of graduation
- 2023 — 3 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477338184. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
13
Distinct HCPCS
1
Medicare allowed
$1,308
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99284 |
Emergency department visit with moderate level of medical decision making | 13 | 13 | $101 |
In context: peer comparison
Among 1 peers in Sebewaing Physician Assistant, average services per provider: 13. This provider delivers 1.0× the peer median.Open Payments
Industry payments received
All-time total
$844
Transactions
30
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, INC. | 14 | $286.90 | |
| Regeneron Healthcare Solutions, INC. | 5 | $191.69 | |
| Abbvie INC. | 1 | $90.13 | |
| Sun Pharmaceutical Industries INC. | 2 | $82.56 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 2 | $57.38 | |
| Genzyme Corporation | 2 | $44.58 | |
| Ucb, INC. | 2 | $38.53 | |
| Incyte Corporation | 1 | $26.70 | |
| Lilly USA, LLC | 1 | $25.07 |
By nature of payment
Frequently asked questions
What is Dr. Olivia Williamson's medical specialty?
Dr. Olivia Williamson practices Physician Assistant in Sebewaing, MI.
Where does Dr. Olivia Williamson practice?
Dr. Olivia Williamson practices at 106 E Main St, Sebewaing, MI 487591568. Office phone: 9898833800.
What is Dr. Olivia Williamson's NPI?
Dr. Olivia Williamson's National Provider Identifier (NPI) is 1477338184, issued by NPPES.
Does Dr. Olivia Williamson accept Medicare assignment?
Yes. Dr. Olivia Williamson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Olivia Williamson commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.