Mark Swierczewski, DDS
NPI 1134392277 · General Practice Dentistry · Lancaster, PA
Mark Swierczewski, DDS is a General Practice Dentistry provider in Lancaster, PA (NPI 1134392277).
Provider details
- NPI number
- 1134392277
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- DS027660L (PA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 30 | 27 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 14 |
| Clindamycin Hcl | 16 | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-09
- Last updated
- 2021-05-24
- Certified
- 2021-05-24
Frequently asked questions
- What is Mark Swierczewski's NPI number?
- Mark Swierczewski's National Provider Identifier (NPI) is 1134392277, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Swierczewski's specialty?
- Mark Swierczewski is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Mark Swierczewski located?
- Mark Swierczewski's practice location on file with NPPES is 60 W Walnut St, Lancaster, PA 17603-3015.
- What is Mark Swierczewski's phone number?
- The practice phone number listed in the NPPES registry for Mark Swierczewski is (717) 394-4466.
- Is Mark Swierczewski's NPI active?
- Yes — Mark Swierczewski's NPI (1134392277) is active in the NPPES registry as of the last update on 2021-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.