Michael R P Vivian, MD
Psychiatry Physician · Newbury Park, CA
Michael R P Vivian, MD is a psychiatry physician with a practice address in Newbury Park, California, and NPI 1831294917, issued on Sep 14, 2006. Check the license (California G78890, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael R P Vivian
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G78890 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3311 Old Conejo RD, Newbury Park, CA 91320
- Phone
- (805) 322-7619
- Enumerated
- Sep 14, 2006
- Record last updated
- Sep 30, 2025
- Fax
- (805) 388-1155
- Medicare enrollment
- Enrolled (PECOS I20080805000758); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1992
- 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 3311 Old Conejo RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronald Thurston, MDPsychiatry Physician1386751857
- Rosimar Torres, MD, FACOGGynecology Physician1548270705
Verify Michael R P Vivian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G78890Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average psychiatry physician in 2024
723 Medicare Part D claims for 66 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Trazodone Hcl60 claims
- Duloxetine Hcl57 claims
- Escitalopram Oxalate56 claims
- Lamotrigine46 claims
- Gabapentin40 claims
- Zolpidem Tartrate38 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.
Michael R P Vivian among 8,673 psychiatry physician records in California
Michael R P Vivian, 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 fileYes · 38% of these records are
- Graduated1992 · 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).
3 psychiatry physician records list a practice address in Newbury Park
They are 3 of the 350 NPPES records with a practice address in Newbury Park, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Newbury Park → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Ebrahim Hazany, M.D.Newbury Park, CA 913201346359304
- Ronald Thurston, MDNewbury Park, CA 913201386751857
- Naser Ahmadi, MD MS PHDSanta Clarita, CA 913211497019806
- Jennifer Heitkamp, M.D.Newhall, CA 913211467548131
- Ijendu Korie, M.D.Santa Clarita, CA 913211568826410
- Christopher AlfonzoEncino, CA 913161437120433
- Wilsa Charles Malveaux, M.D.Northridge, CA 913241346500360
- Susan Chun, MDEncino, CA 913161679695506
Common questions
What is Michael R P Vivian, MD's NPI number?
Michael R P Vivian, MD's National Provider Identifier (NPI) is 1831294917, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael R P Vivian, MD located?
The NPPES record lists a practice address at 3311 Old Conejo RD, Newbury Park, CA, 91320. Phone: (805) 322-7619. Providers update this record themselves, so call before visiting.
How can I verify Michael R P Vivian, MD's license?
NPPES lists California license number G78890, 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 Michael R P Vivian, MD prescribe under Medicare Part D?
In 2024, Michael R P Vivian, MD had 723 Medicare Part D claims for 66 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.