Marissa Alexandra Hirsch, MD
Psychiatry Physician · Los Angeles, CA
Marissa Alexandra Hirsch, MD is a psychiatry physician with a practice address in Los Angeles, California, and NPI 1457989055, issued on Mar 30, 2020. Check the license (California A195472, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marissa Alexandra Hirsch
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A195472 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3330 Cahuenga Blvd W Ste 505, Los Angeles, CA 90068
- Phone
- (855) 501-1004
- Enumerated
- Mar 30, 2020
- Record last updated
- Jul 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20250730003088); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 3330 Cahuenga Blvd W Ste 505
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandra Merino, NURSE PRACTITIONERPsychiatric/Mental Health Nurse Practitioner1194402297
- Eric Michael, M.D.Psychiatry Physician1972038388
- Sydney WilsonClinical Social Worker1093369225
Verify Marissa Alexandra Hirsch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A195472Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average psychiatry physician in 2024
91 Medicare Part D claims for 25 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Venlafaxine Hcl Er16 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.
Bills Medicare through one group practice
- Mark David Levine MD Professional CorporationLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Alexandra Hirsch among 8,673 psychiatry physician records in California
Marissa Alexandra Hirsch, MD 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 2020, is newer than 87% of them.
- NPI issued2020 · 87% of these records are older, 9% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2020 · median 2005 among the 3,295 with a school on file
- Record last updated2025 · 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).
987 psychiatry physician records list a practice address in Los Angeles
They are 987 of the 69,537 NPPES records with a practice address in Los Angeles, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Los Angeles → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Robert Haskell, M.D.Los Angeles, CA 900681558686501
- Eric Michael, M.D.Los Angeles, CA 900681972038388
- David Callander, M.D.Los Angeles, CA 900671225110463
- C Edward Castelo, M.D.West Hollywood, CA 900691497280978
- Joshua Cohen, MDWest Hollywood, CA 900691366903106
- Tatjana Josic, DOLos Angeles, CA 900671578975637
- Mark Lipian, M.D., PH.D.Los Angeles, CA 900671194987339
- Richard Metzner, M.D.West Hollywood, CA 900691134349061
Common questions
What is Marissa Alexandra Hirsch, MD's NPI number?
Marissa Alexandra Hirsch, MD's National Provider Identifier (NPI) is 1457989055, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Alexandra Hirsch, MD located?
The NPPES record lists a practice address at 3330 Cahuenga Blvd W Ste 505, Los Angeles, CA, 90068. Phone: (855) 501-1004. Providers update this record themselves, so call before visiting.
How can I verify Marissa Alexandra Hirsch, MD's license?
NPPES lists California license number A195472, 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 Marissa Alexandra Hirsch, MD prescribe under Medicare Part D?
In 2024, Marissa Alexandra Hirsch, MD had 91 Medicare Part D claims for 25 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.