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PATRICIA LOO MD
NPI 1427215250
Internal Medicine in Torrance, CA

Active since May 20, 2008PECOS Enrolled
1000 WEST CARSON STREET, TORRANCE, CA 90509(310) 222-2409 Get Directions Write a Review

NPPES record last updated: May 24, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Patricia Loo Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PATRICIA LOO MD (NPI 1427215250) is an individual internal medicine provider in Torrance, California, licensed in California (A111555) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427215250
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NamePATRICIA LOOCredential: MD
Location Address1000 WEST CARSON STREETTorrance, CA 90509
Mailing Address1000 West Carson Street, Box-400Torrance, CA 90509 · (310) 222-2409
Phone(310) 222-2409
Sole ProprietorYes
Enumeration DateMay 20, 2008
Last NPPES UpdateMay 24, 2013
✔ NPI 1427215250 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A111555
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1000 WEST CARSON STREET, Torrance, CA 90509
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Patricia Loo Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Patricia Loo reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Skilled Facility Health Care Solutions Inc
12 mi
Surgery
5455 S CENTINELA AVE
Los Angeles, CA 90066
  • Reassigned Medicare billing, California enrollment
  • 51 clinicians in this Medicare group
NPI 1104018423 (310) 445-5999
Skilled Physicians Group
28 mi
General Practice
3747 FOOTHILL BLVD # B140
Glendale, CA 91214
  • Reassigned Medicare billing, California enrollment
  • 34 clinicians in this Medicare group
NPI 1902444623 (310) 445-5999
Signify Health Medical Associates Of California, PC
358 mi
General Practice
505 MONTGOMERY ST, FL 10 & 11
San Francisco, CA 94111
  • Reassigned Medicare billing, California enrollment
  • 407 clinicians in this Medicare group
NPI 1124685169 (972) 715-3800
Skilled Biologics, Inc.
372 mi
Surgery
2108 N ST, NUM 7934
Sacramento, CA 95816
  • Reassigned Medicare billing, California enrollment
  • 37 clinicians in this Medicare group
NPI 1376386763 (310) 445-5999

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
836 services128 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
195 services46 patients
Removal of muscle and/or tissue, 20.0 sq cm or less 11043
This procedure involves the surgical removal of a specified area (20.0 sq cm or less) of muscle and/or tissue. It's typically done to treat conditions like tumors, infections, or injuries. Local or general anesthesia ensures comfort. Recovery time varies.
178 services31 patients
Removal of muscle and/or tissue, each additional 20.0 sq cm or less 11046
This procedure involves the removal of muscle and/or tissue, typically to treat disease or injury. An additional 20.0 square cm or less of tissue may be removed if necessary. The process is performed by a skilled medical professional to ensure your safety and recovery.
157 services15 patients
Removal of skin and tissue, 20.0 sq cm or less 11042
This procedure involves the surgical removal of skin and tissue, up to 20.0 square cm in size. It's often performed to treat conditions like skin cancer or to remove moles, warts, and other skin lesions. The area is numbed and the unwanted tissue is carefully cut out.
118 services27 patients
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306
An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.
75 services75 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90509 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANTONIO BONET MD
Internal Medicine
1000 WEST CARSON STREET
TORRANCE, CA 90509
Los Angeles County (310) 222-2409
CHARITY MAY ARANEZ DO
Anesthesiology
1000 WEST CARSON STREET, HOSPITAL BLDG 1 EAST
TORRANCE, CA 90509
Los Angeles County (424) 306-8000
ANTHONY FRANCIS ARREDONDO M.D.
Internal Medicine (Critical Care Medicine)
1000 WEST CARSON STREET, BOX-400
TORRANCE, CA 90509
Los Angeles County (310) 222-2409
AIKO SORIANO RN
Registered Nurse (Ambulatory Care)
1000 WEST CARSON STREET
TORRANCE, CA 90509
Los Angeles County (310) 222-2040
AMI TAKEI YUEN MD
Student in an Organized Health Care Education/Training Program
1000 WEST CARSON STREET, HOSPITAL 6TH FLOOR, BOX 17
TORRANCE, CA 90509
Los Angeles County (424) 306-5602
SOPHIA TRINH MD
Student in an Organized Health Care Education/Training Program
1000 WEST CARSON STREET, HOSPITAL 6TH FLOOR, BOX 17
TORRANCE, CA 90509
Los Angeles County (424) 306-5600
DR. ALBERT CHIH-HSIN HSU M.D.
Student in an Organized Health Care Education/Training Program
1000 WEST CARSON STREET, BOX 422
TORRANCE, CA 90509
Los Angeles County (310) 222-2718
DIANA KATSMAN MD
Ophthalmology
1000 WEST CARSON STREET
TORRANCE, CA 90509
Los Angeles County (310) 222-2409

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Patricia Loo's NPI number?

The NPI number for Patricia Loo is 1427215250. It was assigned to this individual provider in the NPPES registry on May 20, 2008.

Where is Patricia Loo located?

Patricia Loo practices at 1000 West Carson Street, Torrance, CA 90509. The listed phone number is (310) 222-2409.

What is Patricia Loo's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Patricia Loo enrolled in Medicare?

Yes. Patricia Loo is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Patricia Loo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Patricia Loo reassigns Medicare benefits to 4 organizations: Skilled Facility Health Care Solutions Inc (Los Angeles, CA), Skilled Physicians Group (Glendale, CA), Signify Health Medical Associates Of California, PC (San Francisco, CA) and Skilled Biologics, Inc. (Sacramento, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Patricia Loo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Patricia Loo accept?

Health plans from UnitedHealthcare list Patricia Loo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Patricia Loo was last updated on May 24, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.