Lauren Mercer, MD
NPI 1922261874 · Psychiatry Physician · Hamden, CT
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lauren Mercer, MD is a Psychiatry Physician provider in Hamden, CT (NPI 1922261874).
Provider details
- NPI number
- 1922261874
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 52499 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 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
1,772 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 | 672 | $97 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 624 | $76 |
| Psychotherapy, 45 Minutes90834 | 235 | $108 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 130 | $136 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 38 | $80 |
| Residence Visit for Established Patient With Straightforward Medical Decision Making, Per Day, If Using Time, at Least 15 Minutes99347 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Escitalopram Oxalate | 259 | 80 |
| Lorazepam | 235 | 50 |
| Alprazolam | 196 | 49 |
| Trazodone Hcl | 167 | 57 |
| Mirtazapine | 163 | 53 |
| Clonazepam | 156 | 40 |
| Donepezil Hcl | 152 | 42 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$705 across 30 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
- 2008-07-09
- Last updated
- 2015-04-09
Frequently asked questions
- What is Lauren Mercer's NPI number?
- Lauren Mercer's National Provider Identifier (NPI) is 1922261874, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lauren Mercer's specialty?
- Lauren Mercer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Lauren Mercer located?
- Lauren Mercer's practice location on file with NPPES is 60 Washington Ave, Hamden, CT 06518-3271.
- What is Lauren Mercer's phone number?
- The practice phone number listed in the NPPES registry for Lauren Mercer is (203) 288-0414.
- Does Lauren Mercer accept Medicare?
- Lauren Mercer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lauren Mercer's NPI active?
- Yes — Lauren Mercer's NPI (1922261874) is active in the NPPES registry as of the last update on 2015-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.