Joel Wilsnack, M.D.
NPI 1427083062 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joel Wilsnack, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1427083062).
Provider details
- NPI number
- 1427083062
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
600 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 216 | $136 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 156 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 140 | $191 |
| Administration of Influenza Virus VaccineG0008 | 34 | $34 |
| Admn Sarscov2 Vacc 1 Dose90480 | 25 | $45 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 471 | 131 |
| Amlodipine Besylate | 174 | 51 |
| Levothyroxine Sodium | 161 | 38 |
| Lisinopril | 156 | 41 |
| Rosuvastatin Calcium | 154 | 51 |
| Hydrochlorothiazide | 140 | 34 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$62 across 2 records (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
- 2006-07-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joel Wilsnack's NPI number?
- Joel Wilsnack's National Provider Identifier (NPI) is 1427083062, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joel Wilsnack's specialty?
- Joel Wilsnack is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joel Wilsnack located?
- Joel Wilsnack's practice location on file with NPPES is 20 S Clark St, Chicago, IL 60603-1802.
- What is Joel Wilsnack's phone number?
- The practice phone number listed in the NPPES registry for Joel Wilsnack is (312) 926-7443.
- Does Joel Wilsnack accept Medicare?
- Joel Wilsnack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joel Wilsnack's NPI active?
- Yes — Joel Wilsnack's NPI (1427083062) 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.