Sameer K. Hassamal, MD
Psychiatry Physician · La Verne, CA
Sameer K. Hassamal, MD is a psychiatry physician with a practice address in La Verne, California, and NPI 1538459011, issued on Apr 18, 2011. Check the license (California A133740, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sameer K. Hassamal
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A133740 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4201 Hartshorn Ranch PL, La Verne, CA 91750
- Phone
- (626) 399-1005
- Enumerated
- Apr 18, 2011
- Record last updated
- Apr 19, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151228000750); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Sameer K. Hassamal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A133740Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average psychiatry physician in 2024
987 Medicare Part D claims for 68 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Quetiapine Fumarate96 claims
- Bupropion Xl91 claims
- Divalproex Sodium44 claims
- Clozapine40 claims
- Escitalopram Oxalate38 claims
- Trazodone Hcl36 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.
Sameer K. Hassamal among 8,673 psychiatry physician records in California
Sameer K. Hassamal, 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 2011, is newer than 63% of them.
- NPI issued2011 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2010 · median 2005 among the 3,295 with a school on file
- Record last updated2019 · 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 La Verne → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Sadeed Jawad, M.DLa Verne, CA 917501720474281
- Harold Fajardo, M.D.Rowland Heights, CA 917481811313505
- Kuang Huang, MDMonterey Park, CA 917541962566653
- Ingyu Kim, MDLa Puente, CA 917461235263617
- Graciano Patague, MDLa Puente, CA 917461790816528
- Gary Schlecter, M.DLa Puente, CA 917461497885214
- Ching Shih, M.D.Monterey Park, CA 917541750330999
- William Gillespie, M.D.Glendora, CA 917411538238118
Common questions
What is Sameer K. Hassamal, MD's NPI number?
Sameer K. Hassamal, MD's National Provider Identifier (NPI) is 1538459011, issued on Apr 18, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Sameer K. Hassamal, MD located?
The NPPES record lists a practice address at 4201 Hartshorn Ranch PL, La Verne, CA, 91750. Phone: (626) 399-1005. Providers update this record themselves, so call before visiting.
How can I verify Sameer K. Hassamal, MD's license?
NPPES lists California license number A133740, 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 Sameer K. Hassamal, MD prescribe under Medicare Part D?
In 2024, Sameer K. Hassamal, MD had 987 Medicare Part D claims for 68 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.