Gary Schaffel, M.D.
NPI 1336123884 · Internal Medicine Physician · Lake Forest, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Schaffel, M.D. is a Internal Medicine Physician provider in Lake Forest, IL (NPI 1336123884).
Provider details
- NPI number
- 1336123884
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036093564 (IL)
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
20 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
866 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 343 | $30 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 198 | $15 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 169 | $133 |
| Administration of Influenza Virus VaccineG0008 | 69 | $26 |
| Administration of Pneumococcal VaccineG0009 | 46 | $26 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians and |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 83 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 255 | 66 |
| Rosuvastatin Calcium | 217 | 55 |
| Amlodipine Besylate | 215 | 51 |
| Levothyroxine Sodium | 128 | 20 |
| Irbesartan | 116 | 28 |
| Simvastatin | 102 | 19 |
| Trazodone Hcl | 101 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$371 across 6 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
- 2005-11-29
- Last updated
- 2024-09-05
- Certified
- 2024-09-05
Frequently asked questions
- What is Gary Schaffel's NPI number?
- Gary Schaffel's National Provider Identifier (NPI) is 1336123884, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Schaffel's specialty?
- Gary Schaffel is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Schaffel located?
- Gary Schaffel's practice location on file with NPPES is 990 S Waukegan Rd Ste 200, Lake Forest, IL 60045-2654.
- What is Gary Schaffel's phone number?
- The practice phone number listed in the NPPES registry for Gary Schaffel is (847) 234-8100.
- Does Gary Schaffel accept Medicare?
- Gary Schaffel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Schaffel's NPI active?
- Yes — Gary Schaffel's NPI (1336123884) is active in the NPPES registry as of the last update on 2024-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.