Jack Pieniazek, DO
NPI 1164426870 · Family Medicine Physician · Conroe, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jack Pieniazek, DO is a Family Medicine Physician provider in Conroe, TX (NPI 1164426870).
Provider details
- NPI number
- 1164426870
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- K0541 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
21 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 89 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 470 | 163 |
| Levothyroxine Sodium | 277 | 88 |
| Amlodipine Besylate | 235 | 86 |
| Gabapentin | 214 | 78 |
| Lisinopril | 189 | 71 |
| Rosuvastatin Calcium | 152 | 58 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$122 across 1 record (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
- 2005-06-09
- Last updated
- 2021-06-15
- Certified
- 2021-06-15
Frequently asked questions
- What is Jack Pieniazek's NPI number?
- Jack Pieniazek's National Provider Identifier (NPI) is 1164426870, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Pieniazek's specialty?
- Jack Pieniazek is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Pieniazek located?
- Jack Pieniazek's practice location on file with NPPES is 690 S Loop 336 W, Conroe, TX 77304-3319.
- What is Jack Pieniazek's phone number?
- The practice phone number listed in the NPPES registry for Jack Pieniazek is (936) 756-6661.
- Does Jack Pieniazek accept Medicare?
- Jack Pieniazek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jack Pieniazek's NPI active?
- Yes — Jack Pieniazek's NPI (1164426870) is active in the NPPES registry as of the last update on 2021-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.