Mariam Assaad, M.D.
Internal Medicine Physician · Santa Clarita, CA
Mariam Assaad, M.D. is an internal medicine physician with a practice address in Santa Clarita, California, and NPI 1548521875, issued on Jun 4, 2012. Check the license (California A134023, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mariam Assaad
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A134023 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27107 Tourney RD, Santa Clarita, CA 91355
- Phone
- (661) 222-2470
- Enumerated
- Jun 4, 2012
- Record last updated
- Dec 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151123001832); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 27107 Tourney RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mariam Assaad in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A134023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average internal medicine physician in 2024
3,917 Medicare Part D claims for 444 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 66 claims were for opioids.
Most prescribed
- Atorvastatin Calcium332 claims
- Amlodipine Besylate231 claims
- Levothyroxine Sodium178 claims
- Lisinopril176 claims
- Rosuvastatin Calcium172 claims
- Losartan Potassium135 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
- Southern California Permanente Medical GroupPanorama City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariam Assaad among 17,696 internal medicine physician records in California
Mariam Assaad, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2003 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in Santa Clarita
They are 15 of the 1,835 NPPES records with a practice address in Santa Clarita, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Clarita → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Avelino, MDValencia, CA 913551649298738
- David Campa, M.D.Valencia, CA 913551639170228
- Arousha Davatgarzadeh, M.D.Valencia, CA 913551033213111
- Lakhbinder Dhanda, M.D.Valencia, CA 913551104867555
- Eugene Dorio, M.D.Valencia, CA 913551912956434
- Eric Fernandez, M.D.Valencia, CA 913551326052887
- Bhuvaneswari Gowthaman, M.D.Valencia, CA 913551467435107
- Clement Kim, M.D.Valencia, CA 913551558474262
Common questions
What is Mariam Assaad, M.D.'s NPI number?
Mariam Assaad, M.D.'s National Provider Identifier (NPI) is 1548521875, issued on Jun 4, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mariam Assaad, M.D. located?
The NPPES record lists a practice address at 27107 Tourney RD, Santa Clarita, CA, 91355. Phone: (661) 222-2470. Providers update this record themselves, so call before visiting.
How can I verify Mariam Assaad, M.D.'s license?
NPPES lists California license number A134023, 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 Mariam Assaad, M.D. prescribe under Medicare Part D?
In 2024, Mariam Assaad, M.D. had 3,917 Medicare Part D claims for 444 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.