NPPES file of Aug 9, 2026

Alison Megan Trexler, M.D.

Psychiatry Physician · Encinitas, CA

Alison Megan Trexler, M.D. is a psychiatry physician with a practice address in Encinitas, California, and NPI 1003104704, issued on Jul 14, 2011. Check the license (California A136881, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1003104704
Name
Alison Megan Trexler
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A136881 CA
Self-reported in NPPES; status is on the state search
Practice location
351 Santa FE Dr Ste 200, Encinitas, CA 92024
Phone
(858) 279-1223
Enumerated
Jul 14, 2011
Record last updated
Jun 20, 2024
Medicare enrollment
Enrolled (PECOS I20160201002560); accepts Medicare assignment
Medical or professional school
Mercer University School Of Medicine, 2010
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 351 Santa FE Dr Ste 200

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Teri Acosta, LMFTMarriage & Family Therapist1528786993
  2. Jennie Buss-Gregory, LCSWClinical Social Worker1811529019
  3. Marita Dailo, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1326053174
  4. Tanya Dorocak, M.A., LMFTMarriage & Family Therapist1316023468
  5. Rhonda Duncan Higgs, LMFTMarriage & Family Therapist1144348491
  6. Chantal Flanagan, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1396032975

Verify Alison Megan Trexler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A136881
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2% fewer Medicare Part D claims than the average psychiatry physician in 2024

983 Medicare Part D claims for 163 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Alison Trexler983
  2. Specialty average1,000

Most prescribed

  1. Olanzapine67 claims
  2. Gabapentin47 claims
  3. Trazodone Hcl45 claims
  4. Sertraline Hcl44 claims
  5. Fluoxetine Hcl42 claims
  6. Quetiapine Fumarate40 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $316.82

13 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alison Trexler$316.82
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 3 group practices

  1. Community Research Foundation IncEscondido, CA
  2. Mental Health Systems, Inc.Oceanside, CA
  3. Pacific Coast Psychiatric Associates IncEncinitas, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alison Megan Trexler among 8,673 psychiatry physician records in California

Alison Megan Trexler, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 63% of them.

  • NPI issued2011 · 63% of these records are older, 34% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2010 · median 2005 among the 3,295 with a school on file
  • Record last updated2024 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

26 psychiatry physician records list a practice address in Encinitas

They are 26 of the 1,874 NPPES records with a practice address in Encinitas, and 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Charles Adams, M.D.Encinitas, CA 920241083608533
  2. Sabah Chammas, MDEncinitas, CA 920241457307530
  3. Nancy Cohen, MDEncinitas, CA 920241215975479
  4. Namir DamlujiEncinitas, CA 920241124116793
  5. Renee Dupont, M.D.Encinitas, CA 920241831185263
  6. Robert Friedman, MDEncinitas, CA 920241982760187
  7. Joanne Gartenberg, M.D.Encinitas, CA 920241013009760
  8. Wendy Khentigan, MDEncinitas, CA 920241457468902

Common questions

What is Alison Megan Trexler, M.D.'s NPI number?

Alison Megan Trexler, M.D.'s National Provider Identifier (NPI) is 1003104704, issued on Jul 14, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Alison Megan Trexler, M.D. located?

The NPPES record lists a practice address at 351 Santa FE Dr Ste 200, Encinitas, CA, 92024. Phone: (858) 279-1223. Providers update this record themselves, so call before visiting.

How can I verify Alison Megan Trexler, M.D.'s license?

NPPES lists California license number A136881, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Alison Megan Trexler, M.D. prescribe under Medicare Part D?

In 2024, Alison Megan Trexler, M.D. had 983 Medicare Part D claims for 163 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.