Hassan Ali Chahine, MD
Internal Medicine Physician · Downey, CA
Hassan Ali Chahine, MD is an internal medicine physician with a practice address in Downey, California, and NPI 1518326933, issued on Feb 12, 2016. Check the license (California A151005, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hassan Ali Chahine
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A151005 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8301 Florence Ave Ste 301, Downey, CA 90240
- Phone
- (866) 333-3158
- Enumerated
- Feb 12, 2016
- Record last updated
- Feb 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20180216002001); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 8301 Florence Ave Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Renee Smith, M.D.Psychiatry Physician1710030812
Verify Hassan Ali Chahine in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A151005Check 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% more Medicare Part D claims than the average internal medicine physician in 2024
4,068 Medicare Part D claims for 215 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 56 claims were for opioids.
Most prescribed
- Atorvastatin Calcium185 claims
- Eliquis160 claims
- Pantoprazole Sodium125 claims
- Levothyroxine Sodium124 claims
- Gabapentin112 claims
- Amlodipine Besylate110 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.
Industry payments in 2024: $21.19
2 payments; by number, the most common kind was food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Hassan Chahine MD IncBaldwin Park, CA
- Socal Physician Partners ApcBaldwin Park, CA
- Southern California Hospitalist Network Medical Group IncOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
114 internal medicine physician records list a practice address in Downey
They are 114 of the 3,607 NPPES records with a practice address in Downey, and 17,696 internal medicine physician records in California.
All 114 in Downey → All 17,696 in California → Every provider in Downey →
Other internal medicine physician records in California
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- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Hassan Ali Chahine, MD's NPI number?
Hassan Ali Chahine, MD's National Provider Identifier (NPI) is 1518326933, issued on Feb 12, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Hassan Ali Chahine, MD located?
The NPPES record lists a practice address at 8301 Florence Ave Ste 301, Downey, CA, 90240. Phone: (866) 333-3158. Providers update this record themselves, so call before visiting.
How can I verify Hassan Ali Chahine, MD's license?
NPPES lists California license number A151005, 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 Hassan Ali Chahine, MD prescribe under Medicare Part D?
In 2024, Hassan Ali Chahine, MD had 4,068 Medicare Part D claims for 215 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.