Anna Gibb Hallemeier, MD
NPI 1649333600ActiveIndividual· Internal Medicine· Simsbury, CT
Internal Medicine (MD) in Simsbury, Connecticut, trained at Yale University School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $540,712 for 5,838 claims, against $49,707 paid for services in 2024.
Overview
| NPI | 1649333600 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 19, 2006 |
| Last updated in NPPES | Nov 7, 2022 |
| Certified by provider | Feb 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 044724 | CT |
| Internal Medicine | 207R00000X | 234053 | MA |
| Internal Medicine | 207R00000X | 044724 | MA |
| Pediatrics | 208000000X | 234053 | MA |
| Pediatrics | 208000000X | 044724 | MA |
| Pediatrics | 208000000X | 044724 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 156 |
|---|---|
| Services billed | 682 across 34 procedure codes |
| Paid by Medicare | $49,707 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,838 · 13,854 30-day fills |
|---|---|
| Patients | 500 |
| Total drug cost | $540,712 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
Medical groups
- University of Connecticut Health CenterFarmington, CT · 639 clinicians
- McLean FundSimsbury, CT · 108 clinicians
Hospital affiliation
- John Dempsey Hospital of the University of ConnectFarmington, CT
Other facilities
- Elara CaringHome health agency · Rocky Hill, CT
- McLean Home Care and HospiceHome health agency · Simsbury, CT
- Visiting Nurse & Hospice of Litchfield County, IncHome health agency · Winsted, CT
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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