Marina Obolnikov, M.D.
Psychiatry Physician · Redwood City, CA
Marina Obolnikov, M.D. is a psychiatry physician with a practice address in Redwood City, California, and NPI 1174732713, issued on May 21, 2007. Check the license (California A91716, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marina Obolnikov
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A91716 CA
Self-reported in NPPES; status is on the state search - Practice location
- 802 Brewster Ave, Redwood City, CA 94063
- Phone
- (650) 363-4111
- Enumerated
- May 21, 2007
- Record last updated
- Dec 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (650) 364-6927
- Medicare enrollment
- Enrolled (PECOS I20081027000228); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 802 Brewster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Devin AceretDay Training/Habilitation Specialist1497052161
- Evelyn Alarcon, MDPsychiatry Physician1386873610
- Elizabeth AlvarezMarriage & Family Therapist1598881674
- Nicole ArenasCommunity Health Worker1205341179
- Deborah Ballon, RNCommunity Health Registered Nurse1033244306
- Kristal Belcastro, RN, MSNRegistered Nurse1003121997
Verify Marina Obolnikov in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91716Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average psychiatry physician in 2024
1,312 Medicare Part D claims for 50 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Sertraline Hcl128 claims
- Trazodone Hcl119 claims
- Olanzapine84 claims
- Quetiapine Fumarate81 claims
- Risperidone75 claims
- Invega Sustenna74 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.
Marina Obolnikov among 8,673 psychiatry physician records in California
Marina Obolnikov, M.D. 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 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1979 · median 2005 among the 3,295 with a school on file
- Record last updated2020 · 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).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Redwood City → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Anil Assudani, M.D,Redwood City, CA 940631497753909
- Gary Bozzini, MDRedwood City, CA 940631871671461
- Jason Bromley, MDRedwood City, CA 940631598835142
- Sarah Carey, MDRedwood City, CA 940631164509345
- Bradford Crowell, MDRedwood City, CA 940631457439077
- John Furman, M.D.Redwood City, CA 940631639251697
- John Herbert, MDRedwood City, CA 940631396775870
- Valerie Herman, MDRedwood City, CA 940631164500724
Common questions
What is Marina Obolnikov, M.D.'s NPI number?
Marina Obolnikov, M.D.'s National Provider Identifier (NPI) is 1174732713, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marina Obolnikov, M.D. located?
The NPPES record lists a practice address at 802 Brewster Ave, Redwood City, CA, 94063. Phone: (650) 363-4111. Providers update this record themselves, so call before visiting.
How can I verify Marina Obolnikov, M.D.'s license?
NPPES lists California license number A91716, 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 Marina Obolnikov, M.D. prescribe under Medicare Part D?
In 2024, Marina Obolnikov, M.D. had 1,312 Medicare Part D claims for 50 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.