Jason Pencek, DC, FNP
NPI 1215463393 · Family Nurse Practitioner · Clarendon Hills, IL
Jason Pencek, DC, FNP is a Family Nurse Practitioner provider in Clarendon Hills, IL (NPI 1215463393).
Provider details
- NPI number
- 1215463393
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DC, FNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- 038.013075 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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) |
|---|---|
| Thyroid,porkbrand: Armour Thyroid | 19 |
| Liothyronine Sodium | 16 |
| Levothyroxine Sodium | 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 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
- 2017-05-10
- Last updated
- 2017-05-10
Frequently asked questions
- What is Jason Pencek's NPI number?
- Jason Pencek's National Provider Identifier (NPI) is 1215463393, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Pencek's specialty?
- Jason Pencek is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jason Pencek located?
- Jason Pencek's practice location on file with NPPES is 4 Walker Ave Ste a, Clarendon Hills, IL 60514-1351.
- What is Jason Pencek's phone number?
- The practice phone number listed in the NPPES registry for Jason Pencek is (630) 734-3454.
- Is Jason Pencek's NPI active?
- Yes — Jason Pencek's NPI (1215463393) is active in the NPPES registry as of the last update on 2017-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.