Patricia Loo, MD
Internal Medicine Physician · Torrance, CA
Patricia Loo, MD is an internal medicine physician with a practice address in Torrance, California, and NPI 1427215250, issued on May 20, 2008. Check the license (California A111555, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Patricia Loo
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A111555 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 West Carson Street, Torrance, CA 90509
- Phone
- (310) 222-2409
- Enumerated
- May 20, 2008
- Record last updated
- May 24, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1000 West Carson Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charity May Aranez, DOAnesthesiology Physician1144858127
- Anthony Arredondo, M.D.Critical Care Medicine (Internal Medicine) Physician1164689972
- Antonio Bonet, MDInternal Medicine Physician1134386956
- Chantale HoyteCertified Respiratory Therapist1902321417
- Albert Hsu, M.D.Student in an Organized Health Care Education/Training Program1265766364
- Diana Katsman, MDOphthalmology Physician1306003132
Verify Patricia Loo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A111555Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
11 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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: $46.06
1 payment: food and beverage; the largest payer was Leo Pharma 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.
Patricia Loo among 17,696 internal medicine physician records in California
Patricia Loo, 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 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- 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).
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
- Antonio Bonet, MDTorrance, CA 905091134386956
- Christopher Brown, MD, MPHTorrance, CA 905091609123504
- Albert Cespedes, M.D.Torrance, CA 905091942527650
- Lisa Chung, M.D.Torrance, CA 905091083931794
- Anuj Datta, MDTorrance, CA 905091215129416
- Ritu Kumar, M.D.Torrance, CA 905091063535367
- Carmen Mendez, M.D.Torrance, CA 905091609073618
- Leslie OesterichTorrance, CA 905091245518422
Common questions
What is Patricia Loo, MD's NPI number?
Patricia Loo, MD's National Provider Identifier (NPI) is 1427215250, issued on May 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Patricia Loo, MD located?
The NPPES record lists a practice address at 1000 West Carson Street, Torrance, CA, 90509. Phone: (310) 222-2409. Providers update this record themselves, so call before visiting.
How can I verify Patricia Loo, MD's license?
NPPES lists California license number A111555, 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 Patricia Loo, MD prescribe under Medicare Part D?
In 2024, Patricia Loo, MD had 11 Medicare Part D claims; 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.