Sydney Nidiffer, PA-C
NPI 1861101321 · Physician Assistant · Columbia, SC
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sydney Nidiffer, PA-C is a Physician Assistant provider in Columbia, SC (NPI 1861101321).
Provider details
- NPI number
- 1861101321
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 4660 (SC)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
3 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,155 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,659 | $5 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 719 | $71 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 496 | $39 |
| Biopsy of Related Skin Growth, First Growth11102 | 331 | $66 |
| Destruction of Skin Growth, 1-14 Growths17110 | 246 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 124 | 63 |
| Triamcinolone Acetonide | 116 | 90 |
| Clobetasol Propionate | 71 | 48 |
| Doxycycline Hyclate | 53 | 35 |
| Mupirocin | 45 | 39 |
| Minoxidil | 38 | — |
| Clindamycin Phosphate | 28 | 20 |
| Tacrolimus | 24 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,364 across 176 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-11-22
- Last updated
- 2025-10-20
- Certified
- 2025-10-20
Frequently asked questions
- What is Sydney Nidiffer's NPI number?
- Sydney Nidiffer's National Provider Identifier (NPI) is 1861101321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sydney Nidiffer's specialty?
- Sydney Nidiffer is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sydney Nidiffer located?
- Sydney Nidiffer's practice location on file with NPPES is 220 Graces Way, Columbia, SC 29229-1613.
- What is Sydney Nidiffer's phone number?
- The practice phone number listed in the NPPES registry for Sydney Nidiffer is (803) 736-4560.
- Does Sydney Nidiffer accept Medicare?
- Sydney Nidiffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sydney Nidiffer's NPI active?
- Yes — Sydney Nidiffer's NPI (1861101321) is active in the NPPES registry as of the last update on 2025-10-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.