Alison Trexler, M.D.
NPI 1003104704 · Psychiatry Physician · Encinitas, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alison Trexler, M.D. is a Psychiatry Physician provider in Encinitas, CA (NPI 1003104704).
Provider details
- NPI number
- 1003104704
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A136881 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 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
76 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) |
|---|---|---|
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 26 | $172 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 26 | $71 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 24 | $129 |
Typical Medicare-allowed amounts for these services range $71–$172 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Olanzapine | 67 | 20 |
| Gabapentin | 47 | 24 |
| Trazodone Hcl | 45 | 20 |
| Sertraline Hcl | 44 | 21 |
| Fluoxetine Hcl | 42 | 13 |
| Quetiapine Fumarate | 40 | 15 |
| Clonazepam | 36 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$317 across 13 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
- 2011-07-14
- Last updated
- 2024-06-20
- Certified
- 2024-06-20
Frequently asked questions
- What is Alison Trexler's NPI number?
- Alison Trexler's National Provider Identifier (NPI) is 1003104704, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alison Trexler's specialty?
- Alison Trexler is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Alison Trexler located?
- Alison Trexler's practice location on file with NPPES is 351 Santa Fe Dr Ste 200, Encinitas, CA 92024-5137.
- What is Alison Trexler's phone number?
- The practice phone number listed in the NPPES registry for Alison Trexler is (858) 279-1223.
- Does Alison Trexler accept Medicare?
- Alison Trexler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alison Trexler's NPI active?
- Yes — Alison Trexler's NPI (1003104704) is active in the NPPES registry as of the last update on 2024-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.