James Sielski, DO
NPI 1124001375 · Family Medicine Physician · St. Johns, AZ
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Sielski, DO is a Family Medicine Physician provider in St. Johns, AZ (NPI 1124001375).
Provider details
- NPI number
- 1124001375
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 3318 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 57 |
| Montelukast Sodium | 34 |
| Atorvastatin Calcium | 31 |
| Omeprazole | 29 |
| Gabapentin | 28 |
| Tamsulosin Hcl | 28 |
| Furosemide | 26 |
| Latanoprost | 24 |
| Bupropion Hclbrand: Bupropion Xl | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Sielski's NPI number?
- James Sielski's National Provider Identifier (NPI) is 1124001375, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Sielski's specialty?
- James Sielski is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Sielski located?
- James Sielski's practice location on file with NPPES is 625 North 13th West, St. Johns, AZ 85936.
- What is James Sielski's phone number?
- The practice phone number listed in the NPPES registry for James Sielski is (928) 337-3705.
- Does James Sielski accept Medicare?
- James Sielski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Sielski's NPI active?
- Yes — James Sielski's NPI (1124001375) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.