Mohammed Siddiqui, MD
Internal Medicine Physician · Duarte, CA
Mohammed Siddiqui, MD is an internal medicine physician with a practice address in Duarte, California, and NPI 1861056251, issued on May 1, 2019. Check the license (California A193169, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mohammed Siddiqui
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A193169 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Duarte RD, Duarte, CA 91010
- Phone
- (626) 256-4673
- Enumerated
- May 1, 2019
- Record last updated
- Jun 21, 2024
- Medicare enrollment
- Enrolled (PECOS I20240613003536); 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 1500 Duarte RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mohammed Siddiqui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A193169Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
356 Medicare Part D claims for 79 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate18 claims
- Atorvastatin Calcium16 claims
- Metformin Hcl16 claims
- Pantoprazole Sodium16 claims
- Losartan Potassium15 claims
- Ceftriaxone14 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
- City OF Hope Medical FoundationIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mohammed Siddiqui among 17,696 internal medicine physician records in California
Mohammed Siddiqui, MD 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 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2021 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Duarte → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Karam Ashouri, MDDuarte, CA 910101518616200
- Houman Badrzadeh, DODuarte, CA 910101295380517
- Stan Mathioulakis, MDDuarte, CA 910101912080847
- Ulin Sargeant, M.D., MPHDuarte, CA 910101992878151
- Tyler Seto, M.D.Duarte, CA 910101669579579
- Indravadan Shah, MDDuarte, CA 910101932126497
- Koral Shah, MDDuarte, CA 910101124672613
- Elizabeth Smalley, MDDuarte, CA 910101174596233
Common questions
What is Mohammed Siddiqui, MD's NPI number?
Mohammed Siddiqui, MD's National Provider Identifier (NPI) is 1861056251, issued on May 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mohammed Siddiqui, MD located?
The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.
How can I verify Mohammed Siddiqui, MD's license?
NPPES lists California license number A193169, 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 Mohammed Siddiqui, MD prescribe under Medicare Part D?
In 2024, Mohammed Siddiqui, MD had 356 Medicare Part D claims for 79 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.