Jonathan Shey-Sen Ni, MD
Psychiatry Physician · Pasadena, CA
Jonathan Shey-Sen Ni, MD is a psychiatry physician with a practice address in Pasadena, California, and NPI 1104446236, issued on Apr 18, 2020. Check the license (California A193629, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jonathan Shey-Sen Ni
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A193629 CA
Self-reported in NPPES; status is on the state search - Practice location
- 675 S Arroyo Pkwy Ste 420, Pasadena, CA 91105
- Phone
- (925) 282-1778
- Enumerated
- Apr 18, 2020
- Record last updated
- Jul 30, 2024
- Fax
- (415) 296-5299
- Medicare enrollment
- Enrolled (PECOS I20240819000134); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2020
- 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 675 S Arroyo Pkwy Ste 420
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dana Abusaleh, LMFTMarriage & Family Therapist1649927450
- Dale Alexander, PHD, LPClinical Psychologist1477714095
- Karyn Anderson, LMFTMarriage & Family Therapist1912039777
- Sarah Appleton, LMFT, LPCC, PSYDMarriage & Family Therapist1386830602
- Annie Bailey, PHD, LPClinical Psychologist1053549774
- Yolanda Batres-Espinoza, LMFTMarriage & Family Therapist1922585330
Verify Jonathan Shey-Sen Ni in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A193629Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average psychiatry physician in 2024
174 Medicare Part D claims for 32 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Haloperidol19 claims
- Trazodone Hcl16 claims
- Escitalopram Oxalate15 claims
- Risperidone14 claims
- Bupropion Xl12 claims
- Quetiapine Fumarate11 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
- Pacific Coast Psychiatric Associates IncPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Shey-Sen Ni among 8,673 psychiatry physician records in California
Jonathan Shey-Sen Ni, 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 2020, is newer than 87% of them.
- NPI issued2020 · 87% of these records are older, 9% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2020 · median 2005 among the 3,295 with a school on file
- Record last updated2024 · 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 Pasadena → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Daniel Asimus, M.D., M.S.ED.Pasadena, CA 911051205936242
- Alexander Beebee, M.D.Pasadena, CA 911051952499295
- Elsa Cruz, M.D.Pasadena, CA 911051861524159
- Salvador Echeverria, M.D.Pasadena, CA 911051255565982
- Mohamed El-Gabalawy, MDPasadena, CA 911051407967631
- Ashraf Elmashat, M.D.Pasadena, CA 911051851322887
- Sonal Jandial, D.O.Pasadena, CA 911051356503882
- Irene Jernazian-Kanaian, M.D.Pasadena, CA 911051366585499
Common questions
What is Jonathan Shey-Sen Ni, MD's NPI number?
Jonathan Shey-Sen Ni, MD's National Provider Identifier (NPI) is 1104446236, issued on Apr 18, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Shey-Sen Ni, MD located?
The NPPES record lists a practice address at 675 S Arroyo Pkwy Ste 420, Pasadena, CA, 91105. Phone: (925) 282-1778. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Shey-Sen Ni, MD's license?
NPPES lists California license number A193629, 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 Jonathan Shey-Sen Ni, MD prescribe under Medicare Part D?
In 2024, Jonathan Shey-Sen Ni, MD had 174 Medicare Part D claims for 32 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.