DR. ALISON MEGAN TREXLER M.D.
NPI 1003104704
Psychiatry & Neurology - Psychiatry in Encinitas, CA

Q: What is Alison Trexler's NPI number?

The NPI number for Alison Trexler is 1003104704. It was assigned to this individual provider in the NPPES registry on July 14, 2011.

Q: What is Alison Trexler's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Alison Trexler was last updated on June 20, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 14, 2011PECOS EnrolledAccepts Medicare Assignment

351 SANTA FE DR STE 200, ENCINITAS, CA 92024(858) 279-1223 Get Directions Write a Review

NPPES record last updated: June 20, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 20, 2024, Jan 13, 2023 (2 updates tracked since 2023).

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About Dr. Alison Megan Trexler M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALISON MEGAN TREXLER M.D. (NPI 1003104704) is an individual psychiatry provider in Encinitas, California, licensed in California (A136881) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and is a graduate of Mercer University School Of Medicine (2010).

NPPES Registry Identity

NPI1003104704

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameDR. ALISON MEGAN TREXLERCredential: M.D.

Location Address351 SANTA FE DR STE 200Encinitas, CA 92024-5137

Mailing Address351 Santa Fe Dr Ste 200Encinitas, CA 92024-5137

Phone(858) 279-1223

Sole ProprietorNo

Medical School CMSMercer University School Of MedicineGraduated 2010

Enumeration DateJuly 14, 2011

Last NPPES UpdateJune 20, 20242 updates tracked since enumeration

NPPES CertifiedJune 20, 2024

✔ NPI 1003104704 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · A136881

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

351 SANTA FE DR STE 200, Encinitas, CA 92024

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Alison Megan Trexler M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID42514713

PECOS Enrollment IDI20160201002560

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Alison Trexler reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mental Health Systems, Inc.

11 mi

Community/Behavioral Health

2122 S EL CAMINO REAL STE 102
Oceanside, CA 92054

Reassigned Medicare billing, California enrollment
74 clinicians in this Medicare group

NPI 1649796012 (760) 290-8170

Community Research Foundation Inc

19 mi

Community/Behavioral Health

1202 MORENA BLVD STE 100
San Diego, CA 92110

Reassigned Medicare billing, California enrollment
147 clinicians in this Medicare group

NPI 1952328700 (619) 275-0822

Regents Of The University Of California

21 mi

Psychiatry

200 W ARBOR DR
San Diego, CA 92103

Reassigned Medicare billing, California enrollment
220 clinicians in this Medicare group

NPI 1508968967 (800) 926-8273

Pacific Coast Psychiatric Associates Inc

312 mi

Clinical

7373 N SCOTTSDALE RD STE A199
Scottsdale, AZ 85253

Reassigned Medicare billing, California enrollment
766 clinicians in this Medicare group

NPI 1023125465 (702) 805-5360

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychiatric diagnostic evaluation with medical services 90792

A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.

26 services24 patients

Psychotherapy with evaluation and management visit, 30 minutes 90833

Psychotherapy with evaluation and management is a 30-minute session where a mental health professional talks with you about your concerns and feelings. They assess your mental health, provide support, and manage your treatment plan to help improve your well-being.

26 services11 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

24 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92024 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$184.71 typical visit price

range $62.10 – $184.71

Typical copayment $46.17 (range $15.52 – $46.17)

Most-billed visit code 99205

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. NANCY LOIS TOKAR PHD

Psychologist (Clinical)