Doctor profile · Federal record
Dr. Sydney Nidiffer, PA-C
Physician Assistant · Columbia, SC
- NPI 1861101321
- Accepts Medicare
- 4 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
220 Graces Way
Columbia, SC 292291613
(803) 736-4560
Credentials & registration
- NPI registered
- November 2022 — 4 yrs on file
- Profile last updated
- October 20, 2025
- Year of graduation
- 2022 — 4 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- South Carolina #4660
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861101321. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,322
Distinct HCPCS
10
Medicare allowed
$97,291
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 920 | 179 | $5 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 363 | 313 | $72 | |
17000 |
Destruction of precancer skin growth, 1 growth | 338 | 263 | $41 | |
11102 |
Biopsy of related skin growth, first growth | 205 | 185 | $71 | |
17110 |
Destruction of skin growth, 1-14 growths | 170 | 136 | $89 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 127 | 121 | $102 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 52 | 52 | $45 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 48 | 15 | $1 | |
11103 |
Biopsy of related skin growth, each additional growth | 39 | 33 | $40 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 28 | 28 | $89 |
In context: peer comparison
Among 53 peers in Columbia Physician Assistant, average services per provider: 117. This provider delivers 20× the peer median.Open Payments
Industry payments received
All-time total
$3,364
Transactions
172
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 26 | $495.59 | |
| Regeneron Healthcare Solutions, INC. | 15 | $414.81 | |
| Ucb, INC. | 10 | $277.43 | |
| Sun Pharmaceutical Industries INC. | 12 | $262.83 | |
| Dermavant Sciences, INC. | 14 | $260.98 | |
| Janssen Biotech, INC. | 9 | $227.73 | |
| Incyte Corporation | 11 | $220.92 | |
| Novartis Pharmaceuticals Corporation | 12 | $194.14 | |
| Amgen INC. | 10 | $168.03 | |
| E.R. Squibb & Sons, L.L.C. | 15 | $159.74 | |
| Genzyme Corporation | 13 | $155.07 | |
| Pfizer INC. | 7 | $120.69 | |
| Arcutis Biotherapeutics, INC. | 7 | $116.79 | |
| Lilly USA, LLC | 6 | $107.08 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 5 | $95.48 |
By nature of payment
Frequently asked questions
What is Dr. Sydney Nidiffer's medical specialty?
Dr. Sydney Nidiffer practices Physician Assistant in Columbia, SC.
Where does Dr. Sydney Nidiffer practice?
Dr. Sydney Nidiffer practices at 220 Graces Way, Columbia, SC 292291613. Office phone: 8037364560.
What is Dr. Sydney Nidiffer's NPI?
Dr. Sydney Nidiffer's National Provider Identifier (NPI) is 1861101321, issued by NPPES.
Does Dr. Sydney Nidiffer accept Medicare assignment?
Yes. Dr. Sydney Nidiffer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sydney Nidiffer 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.