Jessica Matthiesen, MD
Internal Medicine Physician · Torrance, CA
Jessica Matthiesen, MD is an internal medicine physician with a practice address in Torrance, California, and NPI 1700460508, issued on May 7, 2021. Check the license (California A194291, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jessica Matthiesen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A194291 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 W Carson St Dept OF, Torrance, CA 90502
- Phone
- (424) 306-5570
- Enumerated
- May 7, 2021
- Record last updated
- Dec 19, 2024
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1000 W Carson St Dept OF
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jessica Matthiesen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A194291Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
195 Medicare Part D claims for 31 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Metformin Hcl20 claims
- Atorvastatin Calcium18 claims
- Amlodipine Besylate11 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: $20.22
1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. 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.
Jessica Matthiesen among 17,696 internal medicine physician records in California
Jessica Matthiesen, 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- 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).
231 internal medicine physician records list a practice address in Torrance
They are 231 of the 8,901 NPPES records with a practice address in Torrance, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Torrance → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Peter Barrett, M.D.Torrance, CA 905021568441954
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- Brian Chow, MDTorrance, CA 905021972716223
- Anthony Dike, MDTorrance, CA 905021003858481
- Robert JendersTorrance, CA 905021629006796
- Rashmi Menon, M.D.Torrance, CA 905021407053416
- Emily Nguyen, DOTorrance, CA 905021083812028
- Mahnaz Rahbar, M.D.Torrance, CA 905021306971775
Common questions
What is Jessica Matthiesen, MD's NPI number?
Jessica Matthiesen, MD's National Provider Identifier (NPI) is 1700460508, issued on May 7, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Jessica Matthiesen, MD located?
The NPPES record lists a practice address at 1000 W Carson St Dept OF, Torrance, CA, 90502. Phone: (424) 306-5570. Providers update this record themselves, so call before visiting.
How can I verify Jessica Matthiesen, MD's license?
NPPES lists California license number A194291, 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 Jessica Matthiesen, MD prescribe under Medicare Part D?
In 2024, Jessica Matthiesen, MD had 195 Medicare Part D claims for 31 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.