IndividualActive
John Siejak
NPI 1508182254 · Pharmacist · Buffalo, NY
John Siejak is a Pharmacist provider in Buffalo, NY (NPI 1508182254).
Provider details
- NPI number
- 1508182254
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 052728 (NY)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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.
Practice location
726 Exchange St
Suite 310
Buffalo, NY 14210-1484
Phone: (716) 859-8222
Street-level locationGet directions
Mailing address
726 Exchange St
Buffalo, NY 14210-1484
Registry dates
- Enumerated
- 2010-04-20
- Last updated
- 2010-04-20
Frequently asked questions
- What is John Siejak's NPI number?
- John Siejak's National Provider Identifier (NPI) is 1508182254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Siejak's specialty?
- John Siejak is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
- Where is John Siejak located?
- John Siejak's practice location on file with NPPES is 726 Exchange St, Buffalo, NY 14210-1484.
- What is John Siejak's phone number?
- The practice phone number listed in the NPPES registry for John Siejak is (716) 859-8222.
- Is John Siejak's NPI active?
- Yes — John Siejak's NPI (1508182254) is active in the NPPES registry as of the last update on 2010-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.