John Wiley, M.D.
NPI 1487612834 · Geriatric Medicine (Internal Medicine) Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Wiley, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Chicago, IL (NPI 1487612834).
Provider details
- NPI number
- 1487612834
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036-069176 (IL)
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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lisinopril | 38 |
| Atorvastatin Calcium | 19 |
| Amlodipine Besylate | 17 |
| Metoprolol Succinate | 17 |
| Escitalopram Oxalate | 16 |
| Diltiazem Hclbrand: Diltiazem 24hr Er (cd) | 13 |
| Apixabanbrand: Eliquis | 13 |
| Hydrochlorothiazide | 13 |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-03
- Last updated
- 2008-06-30
Frequently asked questions
- What is John Wiley's NPI number?
- John Wiley's National Provider Identifier (NPI) is 1487612834, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Wiley's specialty?
- John Wiley is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is John Wiley located?
- John Wiley's practice location on file with NPPES is 5300 W Diversey Ave, Chicago, IL 60639-1513.
- What is John Wiley's phone number?
- The practice phone number listed in the NPPES registry for John Wiley is (773) 725-0990.
- Does John Wiley accept Medicare?
- John Wiley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Wiley's NPI active?
- Yes — John Wiley's NPI (1487612834) is active in the NPPES registry as of the last update on 2008-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.