Lauren C. Mercer, MD
NPI 1922261874ActiveIndividual· Psychiatry & Neurology, Psychiatry· Hamden, CT
Psychiatry & Neurology, Psychiatry (MD) with Geriatric and Adult Psychiatry, LLC, practicing in Hamden, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $235,793 for 3,094 claims, against $126,063 paid for services in 2024. Teva Pharmaceuticals USA, Inc. was the largest of 7 companies reporting payments in 2025, $579.20 in all, mostly food and beverage. Lists Yale-New Haven Hospital as a hospital affiliation.
Overview
| NPI | 1922261874 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 9, 2008 |
| Last updated in NPPES | Apr 9, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 52499 | CT |
| Psychiatry & Neurology, Geriatric Psychiatry | 2084P0805X | 52499 | CT |
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 - Psychiatry (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 242 |
|---|---|
| Services billed | 1,819 across 16 procedure codes |
| Paid by Medicare | $126,063 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,094 · 5,917 30-day fills |
|---|---|
| Patients | 427 |
| Total drug cost | $235,793 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Geriatric and Adult Psychiatry, LLCHamden, CT · 2 clinicians
Hospital affiliation
- Yale-New Haven HospitalNew Haven, CT
Industry payments (Open Payments)
- 2025$579.20 · 24 payments from 7 companies
- 2024$705.03 · 30 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Teva Pharmaceuticals USA, Inc. | $151.06 | 6 |
| Lundbeck LLC | $143.86 | 6 |
| Neurocrine Biosciences, Inc. | $123.94 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $60.80 | 3 |
| Otsuka America Pharmaceutical, Inc. | $53.01 | 3 |
What the 2025 payments were for
- Food and Beverage$579.20 · 24 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other psychiatrists in Hamden
- 1922012392
- 1952319139
- 1306136957
- 1154319416
- 1477567840
- 1720092190
- 1912117714
- 1063861516
- 1801877808
- 1124296710
- 1306831391
- 1336247709
All 21 psychiatrists in Hamden · All psychiatrists in Connecticut