Susan Lynn Marusak, MD
Psychiatry Physician · Los Angeles, CA
Susan Lynn Marusak, MD is a psychiatry physician with a practice address in Los Angeles, California, and NPI 1508881830, issued on Jul 13, 2006. Check the license (California A65685, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Susan Lynn Marusak
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A65685 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Medical Plz, Los Angeles, CA 90095
- Phone
- (310) 825-9989
- Enumerated
- Jul 13, 2006
- Record last updated
- Aug 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 300 Medical Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Susan Lynn Marusak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65685Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average psychiatry physician in 2024
188 Medicare Part D claims for 12 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Bupropion Xl21 claims
- Zolpidem Tartrate21 claims
- Escitalopram Oxalate20 claims
- Alprazolam19 claims
- Citalopram Hbr17 claims
- Duloxetine Hcl15 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.
Susan Lynn Marusak among 8,673 psychiatry physician records in California
Susan Lynn Marusak, 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2008 · 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
- Natalie Ayars, MDLos Angeles, CA 900951285665364
- Laurie Casaus, MDLos Angeles, CA 900951093755449
- Philip Cogen, M.D.Los Angeles, CA 900951831130426
- Melita Daley, MDLos Angeles, CA 900951982635058
- Michael Enenbach, MDLos Angeles, CA 900951477583953
- Stephanny Freeman, PHDLos Angeles, CA 900951891732194
- Helen Lavretsky, M.D.Los Angeles, CA 900951881627404
- Patricia Lester, MDLos Angeles, CA 900951760415277
Common questions
What is Susan Lynn Marusak, MD's NPI number?
Susan Lynn Marusak, MD's National Provider Identifier (NPI) is 1508881830, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan Lynn Marusak, MD located?
The NPPES record lists a practice address at 300 Medical Plz, Los Angeles, CA, 90095. Phone: (310) 825-9989. Providers update this record themselves, so call before visiting.
How can I verify Susan Lynn Marusak, MD's license?
NPPES lists California license number A65685, 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 Susan Lynn Marusak, MD prescribe under Medicare Part D?
In 2024, Susan Lynn Marusak, MD had 188 Medicare Part D claims for 12 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.