Marian Louis, MD
Psychiatry Physician · Sacramento, CA
Marian Louis, MD is a psychiatry physician with a practice address in Sacramento, California, and NPI 1457491144, issued on Feb 8, 2007. Check the license (California G140111, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marian Louis
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- G140111 CA
155532 NY
Self-reported in NPPES; status is on the state search - Practice location
- 650 Howe Ave Bldg 400-B, Sacramento, CA 95825
- Phone
- (916) 993-4131
- Enumerated
- Feb 8, 2007
- Record last updated
- Jun 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180910003057); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1978
- Entity
- Type 1 · individual
Also registered at 650 Howe Ave Bldg 400-B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Borger, B.A. PSYCHOLOGYRehabilitation Practitioner1700341658
- Kristy DesmazesAdult Companion1841923158
- Madison Duggin, MS, AMFTMarriage & Family Therapist1346965878
- Muhammed Elkarany, R1543670124Addiction (Substance Use Disorder) Counselor1306600580
- Brianne Garcia-SmithAdult Companion1982492658
- Tatiana Garrett-ThompsonMarriage & Family Therapist1144822784
Verify Marian Louis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G140111Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average psychiatry physician in 2024
947 Medicare Part D claims for 88 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Aripiprazole85 claims
- Abilify Maintena61 claims
- Sertraline Hcl60 claims
- Quetiapine Fumarate55 claims
- Trazodone Hcl50 claims
- Gabapentin46 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
- County OF SacramentoSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
331 psychiatry physician records list a practice address in Sacramento
They are 331 of the 33,083 NPPES records with a practice address in Sacramento, and 8,673 psychiatry physician records in California.
All 331 in Sacramento → All 8,673 in California → Every provider in Sacramento →
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 Marian Louis, MD's NPI number?
Marian Louis, MD's National Provider Identifier (NPI) is 1457491144, issued on Feb 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marian Louis, MD located?
The NPPES record lists a practice address at 650 Howe Ave Bldg 400-B, Sacramento, CA, 95825. Phone: (916) 993-4131. Providers update this record themselves, so call before visiting.
How can I verify Marian Louis, MD's license?
NPPES lists California license number G140111, 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 Marian Louis, MD prescribe under Medicare Part D?
In 2024, Marian Louis, MD had 947 Medicare Part D claims for 88 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.