Christopher A. Sinnappan, M.D.
Psychiatry Physician · Pleasanton, CA
Christopher A. Sinnappan, M.D. is a psychiatry physician with a practice address in Pleasanton, California, and NPI 1588740252, issued on Oct 27, 2006. Check the license (California G85649, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher A. Sinnappan
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G85649 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5776 Stoneridge Mall RD Ste 300, Pleasanton, CA 94588
- Phone
- (855) 501-1004
- Enumerated
- Oct 27, 2006
- Record last updated
- May 5, 2026
- Medicare enrollment
- Enrolled (PECOS I20180212001650); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1993
- 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 5776 Stoneridge Mall RD Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mariah Chew, LMFTMarriage & Family Therapist1548731284
- Tasha Crljenica-Moad, LMFTMarriage & Family Therapist1841850864
- Juan De Hoyos, MDPsychiatry Physician1336181411
- Ana De Jesus, LCSWClinical Social Worker1487029435
- David Finkelstein, M.D.Psychiatry Physician1124179262
- Amarpreet GillPsychiatric/Mental Health Nurse Practitioner1942777677
Verify Christopher A. Sinnappan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G85649Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average psychiatry physician in 2024
531 Medicare Part D claims for 44 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Clonazepam72 claims
- Duloxetine Hcl48 claims
- Trazodone Hcl32 claims
- Lamotrigine27 claims
- Gabapentin23 claims
- Aripiprazole21 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 CorporationPleasanton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher A. Sinnappan among 8,673 psychiatry physician records in California
Christopher A. Sinnappan, 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 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
- Graduated1993 · median 2005 among the 3,295 with a school on file
- Record last updated2026 · 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 Pleasanton → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Mudassir Ali, M.D.Pleasanton, CA 945881245278548
- Dipti Bhakta, MDPleasanton, CA 945881558569400
- Laurie Chen, M.D.Pleasanton, CA 945881861689820
- Juan De Hoyos, MDPleasanton, CA 945881336181411
- Kathryn Econome, MDPleasanton, CA 945881811069636
- Lisa Fazzolari, DOPleasanton, CA 945881679793269
- David Finkelstein, M.D.Pleasanton, CA 945881124179262
- Rebecca Hirsch, MDPleasanton, CA 945881033295563
Common questions
What is Christopher A. Sinnappan, M.D.'s NPI number?
Christopher A. Sinnappan, M.D.'s National Provider Identifier (NPI) is 1588740252, issued on Oct 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christopher A. Sinnappan, M.D. located?
The NPPES record lists a practice address at 5776 Stoneridge Mall RD Ste 300, Pleasanton, CA, 94588. Phone: (855) 501-1004. Providers update this record themselves, so call before visiting.
How can I verify Christopher A. Sinnappan, M.D.'s license?
NPPES lists California license number G85649, 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 Christopher A. Sinnappan, M.D. prescribe under Medicare Part D?
In 2024, Christopher A. Sinnappan, M.D. had 531 Medicare Part D claims for 44 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.