Homan Siman, MD
Internal Medicine Physician · Wilmington, CA
Homan Siman, MD is an internal medicine physician with a practice address in Wilmington, California, and NPI 1558456814, issued on Oct 4, 2006. Check the license (California A83240, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Homan Siman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A83240 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1231 Avalon Blvd, Wilmington, CA 90744
- Phone
- (310) 835-7215
- Enumerated
- Oct 4, 2006
- Record last updated
- Apr 1, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (310) 835-6520
- Medicaid ID
- A832400 CA
- Medicare enrollment
- Enrolled (PECOS I20050428000476); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Homan Siman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A83240Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average internal medicine physician in 2024
422 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
- Atorvastatin Calcium57 claims
- Metformin Hcl25 claims
- Amlodipine Besylate20 claims
- Omeprazole16 claims
- Levothyroxine Sodium15 claims
- Losartan Potassium14 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: $321.48
13 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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 2 group practices
- Complete Care Family Medical ClinicWilmington, CA
- Healing Hand Family Care Clinics CorpIndio, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Homan Siman among 17,696 internal medicine physician records in California
Homan Siman, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2000 · median 2004 among the 11,065 with a school on file
- Record last updated2013 · 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 Wilmington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Emma Trejo, MDWilmington, CA 907441043387954
- Estrella Aguinaldo, M.D.Carson, CA 907451548339278
- Osman Alvarado Portillo, MDCarson, CA 907451881379899
- Maria Cecilia Canlas, MDCarson, CA 907451558362905
- Lynn Coates, MDCarson, CA 907451851380315
- Reza Ghanian, MDCarson, CA 907451639151350
- Eugene Hardin, M.D.Carson, CA 907451366479123
- Israel Hernandez-Arce, MDCarson, CA 907451063690659
Common questions
What is Homan Siman, MD's NPI number?
Homan Siman, MD's National Provider Identifier (NPI) is 1558456814, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Homan Siman, MD located?
The NPPES record lists a practice address at 1231 Avalon Blvd, Wilmington, CA, 90744. Phone: (310) 835-7215. Providers update this record themselves, so call before visiting.
How can I verify Homan Siman, MD's license?
NPPES lists California license number A83240, 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 Homan Siman, MD prescribe under Medicare Part D?
In 2024, Homan Siman, MD had 422 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.