Karl Michael Langberg, M.D.
NPI 1285070730ActiveIndividual· Internal Medicine, Gastroenterology· Hamden, CT
Internal Medicine, Gastroenterology (M.D.) in Hamden, Connecticut, trained at Emory University School of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $568,583 for 868 claims, against $58,902 paid for services in 2024. Phathom Pharmaceuticals, Inc. was the largest of 16 companies reporting payments in 2025, $6,613 in all, mostly speaking and faculty fees.
Overview
| NPI | 1285070730 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 10, 2013 |
| Last updated in NPPES | May 27, 2021 |
| Certified by provider | May 27, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 55158 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 224 |
|---|---|
| Services billed | 1,308 across 41 procedure codes |
| Paid by Medicare | $58,902 |
Part D prescriptions in 2024
| Prescriptions (claims) | 868 · 1,832 30-day fills |
|---|---|
| Patients | 282 |
| Total drug cost | $568,583 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | Emory University School of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Gastroenterology |
Medical group
- Hhc Physician Services PLLCHamden, CT · 132 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$6,613 · 60 payments from 16 companies
- 2024$8,666 · 43 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $5,410 | 5 |
| Abbvie Inc. | $286.47 | 16 |
| Ardelyx, Inc. | $271.49 | 11 |
| Madrigal Pharmaceuticals | $154.29 | 10 |
| Takeda Pharmaceuticals U.S.A., Inc. | $89.11 | 3 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$5,160 · 3 payments
- Food and Beverage$1,453 · 57 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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