Joshua Owczarczak
NPI 1245818939 · Internal Medicine Physician · Buffalo, NY
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joshua Owczarczak is a Internal Medicine Physician provider in Buffalo, NY (NPI 1245818939).
Provider details
- NPI number
- 1245818939
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 333560 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 26 |
| Empagliflozinbrand: Jardiance | 22 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 19 |
| Carvedilol | 13 |
| Hydrochlorothiazide | 13 |
| Citalopram Hydrobromidebrand: Citalopram Hbr | 12 |
| Lisinopril | 11 |
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 , 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
Additional practice locations (1)
- 1050 Niagara StBuffalo, NY 14213-2001Phone: (716) 768-7600
Registry dates
- Enumerated
- 2021-04-01
- Last updated
- 2025-11-10
- Certified
- 2025-11-10
Frequently asked questions
- What is Joshua Owczarczak's NPI number?
- Joshua Owczarczak's National Provider Identifier (NPI) is 1245818939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joshua Owczarczak's specialty?
- Joshua Owczarczak is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joshua Owczarczak located?
- Joshua Owczarczak's practice location on file with NPPES is 1001 Main St Fl 4, Buffalo, NY 14203-1009.
- What is Joshua Owczarczak's phone number?
- The practice phone number listed in the NPPES registry for Joshua Owczarczak is (716) 550-8361.
- Does Joshua Owczarczak accept Medicare?
- Joshua Owczarczak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joshua Owczarczak's NPI active?
- Yes — Joshua Owczarczak's NPI (1245818939) is active in the NPPES registry as of the last update on 2025-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.