Ronald Siregar, MD
Family Medicine Physician · Carson, CA
Ronald Siregar, MD is a family medicine physician with a practice address in Carson, California, and NPI 1972124865, issued on May 1, 2020. Check the license (California A190650, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald Siregar
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A190650 CA
Self-reported in NPPES; status is on the state search - Practice location
- 824 E Carson St Ste 101, Carson, CA 90745
- Phone
- (310) 233-3203
- Enumerated
- May 1, 2020
- Record last updated
- Oct 17, 2023
- Fax
- (310) 549-7010
- Medicare enrollment
- Enrolled (PECOS I20231115002434); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 824 E Carson St Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carmen Gossette, M.D.Family Medicine Physician1225238850
- Krixie Silangcruz, MD, MBAInternal Medicine Physician1841857919
Verify Ronald Siregar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A190650Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average family medicine physician in 2024
552 Medicare Part D claims for 176 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate32 claims
- Atorvastatin Calcium30 claims
- Metformin Hcl28 claims
- Losartan Potassium19 claims
- Azithromycin17 claims
- Pantoprazole Sodium16 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: $218.87
10 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 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 one group practice
- Torrance Health Association IncCarson, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Siregar among 17,133 family medicine physician records in California
Ronald Siregar, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 family medicine physician records list a practice address in Carson
They are 21 of the 806 NPPES records with a practice address in Carson, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Carson → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Florante Alejo, M.D.Carson, CA 907451881618197
- Jenny Batongmalaque, M.D.Carson, CA 907451952350613
- Christopher Bustamante, M.D.Carson, CA 907451124233945
- Elizabeth Duenas, M.D.Carson, CA 907451548365471
- Jane Ekejiuba, M.D.Carson, CA 907451346567617
- Terrilyn Gauer, DOCarson, CA 907451609973965
- Carmen Gossette, M.D.Carson, CA 907451225238850
- Daniel Harvey, MDCarson, CA 907451194759688
Common questions
What is Ronald Siregar, MD's NPI number?
Ronald Siregar, MD's National Provider Identifier (NPI) is 1972124865, issued on May 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Siregar, MD located?
The NPPES record lists a practice address at 824 E Carson St Ste 101, Carson, CA, 90745. Phone: (310) 233-3203. Providers update this record themselves, so call before visiting.
How can I verify Ronald Siregar, MD's license?
NPPES lists California license number A190650, 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 Ronald Siregar, MD prescribe under Medicare Part D?
In 2024, Ronald Siregar, MD had 552 Medicare Part D claims for 176 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.