Benjamin Brian Williamson, MD
Psychiatry Physician · Newport Beach, CA
Benjamin Brian Williamson, MD is a psychiatry physician with a practice address in Newport Beach, California, and NPI 1467730093, issued on Aug 1, 2011. Check the license (California A162939, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Benjamin Brian Williamson
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A162939 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4100 Newport Place Dr Ste 730, Newport Beach, CA 92660
- Phone
- (714) 705-6410
- Enumerated
- Aug 1, 2011
- Record last updated
- Aug 5, 2025
- Fax
- (714) 705-6411
- Medicare enrollment
- Enrolled (PECOS I20200702000431); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 4100 Newport Place Dr Ste 730
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jibran AhmedPsychiatric/Mental Health Nurse Practitioner1992311823
- Anna McCarthy, PH.D.Psychologist1336380773
- Sarah ShahPsychiatry Physician1568740538
Verify Benjamin Brian Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A162939Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average psychiatry physician in 2024
263 Medicare Part D claims for 24 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Mirtazapine32 claims
- Duloxetine Hcl26 claims
- Buspirone Hcl22 claims
- Alprazolam19 claims
- Eszopiclone13 claims
- Vraylar13 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: $457.99
17 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mindful Health Solutions A Professional Medical CorporationCosta Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
59 psychiatry physician records list a practice address in Newport Beach
They are 59 of the 4,414 NPPES records with a practice address in Newport Beach, and 8,673 psychiatry physician records in California.
All 59 in Newport Beach → All 8,673 in California → Every provider in Newport Beach →
Other psychiatry physician records in California
- Nancy Aaen, MDNapa, CA1609816669
- Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
- Mekabiz Abaian, MDSan Bernardino, CA1891090163
- Brenda Abarca, MDTorrance, CA1407485527
- Pilar Abascal, M.D.Los Angeles, CA1730528191
- Michele Abbasi, M.D.Westlake Village, CA1093940330
- Zohaib AbbasiMartinez, CA1013392224
- Sandy Abdelkedous, MDFresno, CA1306093109
- Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
- Ezzat Abdelmalek, M.DDana Point, CA1992828826
Common questions
What is Benjamin Brian Williamson, MD's NPI number?
Benjamin Brian Williamson, MD's National Provider Identifier (NPI) is 1467730093, issued on Aug 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Brian Williamson, MD located?
The NPPES record lists a practice address at 4100 Newport Place Dr Ste 730, Newport Beach, CA, 92660. Phone: (714) 705-6410. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Brian Williamson, MD's license?
NPPES lists California license number A162939, 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 Benjamin Brian Williamson, MD prescribe under Medicare Part D?
In 2024, Benjamin Brian Williamson, MD had 263 Medicare Part D claims for 24 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.