Carl R. Lang, M.D.
NPI 1730167339ActiveIndividual· Internal Medicine· Buffalo Grove, IL
Internal Medicine (M.D.) with Endeavor Health Medical Group and 1 other group, practicing in Buffalo Grove, Illinois. Their prescriptions cost Medicare Part D more than their services did: $738,712 for 6,091 claims, against $68,249 paid for services in 2024. Pfizer Inc. was the largest of 18 companies reporting payments in 2025, $1,556 in all, mostly food and beverage. Lists Northshore University Healthsystem - Evanston Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1730167339 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 4, 2006 |
| Last updated in NPPES | May 5, 2021 |
| Certified by provider | May 5, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036062494 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 228 |
|---|---|
| Services billed | 1,078 across 24 procedure codes |
| Paid by Medicare | $68,249 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,091 · 12,219 30-day fills |
|---|---|
| Patients | 304 |
| Total drug cost | $738,712 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1980 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
- Abcm Healthcare Services PLLCDeerfield, IL · 7 clinicians
Hospital affiliations
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwest Community Hospital 1Arlington Heights, IL
- Northwestern Memorial HospitalChicago, IL
Other facilities
- Residential Home HealthHome health agency · Schaumburg, IL
Industry payments (Open Payments)
- 2025$1,556 · 67 payments from 18 companies
- 2024$1,608 · 77 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $383.19 | 15 |
| Amgen Inc. | $192.14 | 8 |
| Astrazeneca Pharmaceuticals LP | $175.15 | 9 |
| Axsome Therapeutics, Inc. | $151.06 | 7 |
| Lilly USA, LLC | $131.58 | 5 |
What the 2025 payments were for
- Food and Beverage$1,556 · 67 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Buffalo Grove · All internal medicine physicians in Illinois