Philip Papaioannou
NPI 1083294441 · Internal Medicine Physician · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Philip Papaioannou is a Internal Medicine Physician provider in Oak Lawn, IL (NPI 1083294441).
Provider details
- NPI number
- 1083294441
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036.174991 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 20 |
| Losartan Potassium | 18 |
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
Additional practice locations (3)
- 3815 Highland AveDowners Grove, IL 60515-1500Phone: (630) 275-5900
- 1425 N Randall RdElgin, IL 60123-2300Phone: (847) 742-9800
- 1775 Dempster StPark Ridge, IL 60068-1143Phone: (847) 723-2210
Registry dates
- Enumerated
- 2021-04-10
- Last updated
- 2025-08-21
- Certified
- 2025-08-21
Frequently asked questions
- What is Philip Papaioannou's NPI number?
- Philip Papaioannou's National Provider Identifier (NPI) is 1083294441, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Philip Papaioannou's specialty?
- Philip Papaioannou is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Philip Papaioannou located?
- Philip Papaioannou's practice location on file with NPPES is 4440 W 95th St, Oak Lawn, IL 60453-2600.
- What is Philip Papaioannou's phone number?
- The practice phone number listed in the NPPES registry for Philip Papaioannou is (708) 684-8000.
- Does Philip Papaioannou accept Medicare?
- Philip Papaioannou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Philip Papaioannou's NPI active?
- Yes — Philip Papaioannou's NPI (1083294441) is active in the NPPES registry as of the last update on 2025-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.