John Lee, M.D.
NPI 1265449722 · Internal Medicine Physician · Naperville, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Lee, M.D. is a Internal Medicine Physician provider in Naperville, IL (NPI 1265449722).
Provider details
- NPI number
- 1265449722
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-110235 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,142 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 | 346 | $131 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 231 | $9 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 170 | $16 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 164 | $133 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 159 | $13 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 155 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 66 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 307 | 87 |
| Rosuvastatin Calcium | 189 | 55 |
| Levothyroxine Sodium | 184 | 50 |
| Amlodipine Besylate | 154 | 43 |
| Montelukast Sodium | 140 | 36 |
| Lisinopril | 132 | 40 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,441 across 77 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
- 2006-08-01
- Last updated
- 2011-01-25
Frequently asked questions
- What is John Lee's NPI number?
- John Lee's National Provider Identifier (NPI) is 1265449722, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lee's specialty?
- John Lee is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Lee located?
- John Lee's practice location on file with NPPES is 1220 Hobson Rd, Naperville, IL 60540-8139.
- What is John Lee's phone number?
- The practice phone number listed in the NPPES registry for John Lee is (630) 416-7766.
- Does John Lee accept Medicare?
- John Lee is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Lee's NPI active?
- Yes — John Lee's NPI (1265449722) is active in the NPPES registry as of the last update on 2011-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.