Dr. Ronald K. Loo , MD
Urology β’ Bellflower, CA
9400 Rosecrans Ave
Bellflower, CA 907062246
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on January 8, 2007; this date does not establish years in practice.
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Published CMS data list 1,373 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Finasteride β 611 prescription fills, including refills.
- Tamsulosin Hcl β 360 prescription fills, including refills.
- Potassium Citrate Er (Potassium Citrate) β 104 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 14 records in the table Β· Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 65% of clinicians listed under Urology in California (2024, 1,070 clinicians with data). Median for this group: 911. Middle half: 244 to 1,758.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 1,436 in 2020 to 1,373 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2020β2024.
Practice Location & Contact Primary Location
9400 Rosecrans Ave
Bellflower, CA 907062246
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Southern California Permanente Medical Group. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Southern California Keck School Of Medicine
1985
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
4,073 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$75,389 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $123.30 across 3 records.
By nature of payment
- Food and Beverage: $123.30 across 3 records.
Reporting-company totals
- Myriad Genetic Laboratories, Inc.: $50.00 across 1 record.
- Calyxo, Inc.: $43.94 across 1 record.
- Edap Technomed Inc: $29.36 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
41 years (graduated 1985)
CMS Doctors and Clinicians data list 1985 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2007
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Loo has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Loo as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Bellflower and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Urology in California (2024, 1,070 clinicians with data). Median for this group: 911. Middle half: 244 to 1,758.
Too few clinicians listed under Urology in Bellflower have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Urology in California (2024, 1,070 clinicians with data). Median for this group: $77,401. Middle half: $13,099 to $231,076.
Too few clinicians listed under Urology in Bellflower have Medicare Part D data for 2024 to compare.
6 active clinicians are listed under Urology with a practice address in Bellflower, CA (1,524 in California).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 1,436 in 2020 and 1,373 in 2024.
- 2020: 1,436
- 2021: 1,450
- 2022: 1,365
- 2023: 1,432
- 2024: 1,373
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30-day fills
30-day fills stayed about the same: 4,355 in 2020 and 4,073 in 2024.
- 2020: 4,355
- 2021: 4,371
- 2022: 4,108
- 2023: 4,172
- 2024: 4,073
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Part D drug cost
Part D drug cost increased 38% from $54,546 in 2020 to $75,389 in 2024.
- 2020: $54,546
- 2021: $87,606
- 2022: $73,645
- 2023: $86,940
- 2024: $75,389
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $590.35 in 2021 to $123.30 in 2025.
- 2021: $590.35
- 2022: $584.41
- 2023: $139.32
- 2024: $180.00
- 2025: $123.30
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 β December 31, 2025): fewer than 11 records totaling $123.30.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Myriad Genetic Laboratories, Inc. |
Food and Beverage
In-kind items and services
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PROLARIS | General | $50.00 |
| Calyxo, Inc. |
Food and Beverage
In-kind items and services
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CVAC ASPIRATION SYSTEM | General | $43.94 |
| Edap Technomed Inc |
Food and Beverage
Cash or cash equivalent
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FOCAL ONE | General | $29.36 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Finasteride | Finasteride | 611 | 56,160 | $9,040.85 | 182 |
| Tamsulosin Hcl | Tamsulosin Hcl | 360 | 35,040 | $7,378.41 | 120 |
| Potassium Citrate Er | Potassium Citrate | 104 | 10,342 | $7,735.68 | 43 |
| Terazosin Hcl | Terazosin Hcl | 71 | 7,002 | $2,972.04 | 21 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 33 | 432 | $407.62 | 18 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 33 | 674 | $237.93 | 16 |
| Allopurinol | Allopurinol | 28 | 2,450 | $276.96 | β |
| Myrbetriq | Mirabegron | 28 | 2,290 | $35,889.30 | 12 |
| Cephalexin | Cephalexin | 22 | 790 | $338.66 | 15 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 20 | 80 | $187.54 | 20 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 19 | 632 | $458.99 | β |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 18 | 1,800 | $344.47 | β |
| Mirabegron Er | Mirabegron | 14 | 1,150 | $9,567.70 | 12 |
| Estradiol | Estradiol | 12 | 1,248 | $552.96 | β |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208800000X
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - UROLOGY
I20101019000685
CA
9537352802
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Southern California Permanente Medical Group
9333 Rosecrans Ave, Bellflower, CA 907062141
Phone: 5624613000
Southern California Permanente Medical Group
9449 Imperial Hwy, Downey, CA 902422814
Phone: 5624613000
Southern California Permanente Medical Group
9333 Imperial Hwy, Downey, CA 902422812
Phone: 8009234040
Southern California Permanente Medical Group
9353 Imperial Hwy, Downey, CA 902422812
Phone: 5626579000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Cardiovascular Disease
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated January 08, 2007.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Urology Specialists in Bellflower
Healthcare providers in BellflowerMailing Address
9400 Rosecrans Ave
Bellflower, CA 907062246
Phone: 5624613000