1. Home
  2. Directory
  3. California
  4. Los Angeles
  5. Internal Medicine
  6. NPI Profile

DR. RICHARD SRULARON HOROWITZ M.D.
NPI 1437366804
Internal Medicine - Nephrology in Los Angeles, CA

Active since May 16, 2007PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0949007 · Microscopy
8635 W 3RD ST, SUITE 885, LOS ANGELES, CA 90048(310) 358-7200(310) 358-7211 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Richard Srularon Horowitz M.d. NPPES

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

DR. RICHARD SRULARON HOROWITZ M.D. (NPI 1437366804) is an individual nephrology provider in Los Angeles, California, licensed in California (A43197) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, holds a CLIA Microscopy certificate valid through March 22, 2027, and is a graduate of Other (1982).

NPPES Registry Identity

NPI1437366804
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameDR. RICHARD SRULARON HOROWITZCredential: M.D.
Location Address8635 W 3RD ST, SUITE 885Los Angeles, CA 90048-6101
Mailing Address8635 W 3rd St, Suite 885Los Angeles, CA 90048-6101 · (310) 358-7200 · Fax (310) 358-7211
Phone(310) 358-7200
Fax(310) 358-7211
Sole ProprietorYes
Medical School CMSOtherGraduated 1982
Enumeration DateMay 16, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1437366804 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in CA · A43197
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
8635 W 3RD ST, Los Angeles, CA 90048
Open in Google Maps ↗

Other Identifiers 3

Medicare UPINA63820CA
Medicare ID-Type UnspecifiedA431970CA
Medicaid00A431970CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Richard Srularon Horowitz M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1456260413
PECOS Enrollment IDI20101229000628
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 05D0949007

Richard S Horowitz MD A Medical Corp · Beverly Hills, CA
Active · expires Mar 22, 2027
CLIA Number05D0949007
Laboratory TypePhysician Office
Certificate Effective DateMarch 23, 2025
Certificate Expiration DateMarch 22, 2027
Laboratory DirectorRichard S. Horwitz MD
Laboratory Phone(310) 358-7200
Laboratory LocationRichard S Horowitz MD A Medical Corp462 N Linden Dr Ste 434, Beverly Hills, CA 90212
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 8

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
254 services112 patients
Insertion of needle into vein (3 years or older) 36410
This procedure involves placing a small needle into a vein, typically in the arm. It's done to collect blood for testing or to deliver medication. You may feel a quick pinch, but it's usually over in seconds. It's a common, safe procedure.
199 services121 patients
Manual urinalysis test with examination using microscope, non-automated 81000
A manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.
136 services97 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
95 services87 patients
Electrocardiogram (ecg) 1 to 3 leads with review by physician 93040
An Electrocardiogram (ECG) is a non-invasive test that records the electrical activity of your heart. It uses 1 to 3 leads (sensors) placed on your skin. A physician reviews the results to assess heart rate, rhythm, and detect any abnormalities.
95 services87 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
83 services53 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90048 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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
1 supplier12 claims12 services$201.19 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

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

I-HSUAN LIN DPT
Physical Therapist
8635 W 3RD ST, SUITE 465W
LOS ANGELES, CA 90048
Los Angeles County (310) 657-8591
JAY W MARKS MD
Internal Medicine (Gastroenterology)
8635 W 3RD ST, SUITE #880
LOS ANGELES, CA 90048
Los Angeles County (323) 469-4499
JEFFREY FREDRICK CAREN M.D.
Specialist
8635 W 3RD ST, 890W
LOS ANGELES, CA 90048
Los Angeles County (310) 659-0714
HART C.M. COHEN
Specialist
8635 W 3RD ST, 450W
LOS ANGELES, CA 90048
Los Angeles County (310) 652-5954
JAY J STEIN M.D.
Urology
8635 W 3RD ST, SUITE 460W
LOS ANGELES, CA 90048
Los Angeles County (310) 652-8810
MR. DUDLEY S DANOFF MD
Urology
8635 W 3RD ST, SUITE 1 WEST
LOS ANGELES, CA 90048
Los Angeles County (310) 854-9898
RODRIGO F ALBAN M.D.
Surgery (Surgical Critical Care)
8635 W 3RD ST, SUITE 650W
LOS ANGELES, CA 90048
Los Angeles County (310) 423-8513
COR MEDICAL GROUP, INC
Specialist
8635 W 3RD ST, SUITE 890W
LOS ANGELES, CA 90048
Los Angeles County (310) 659-0714

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 Richard Horowitz's NPI number?

The NPI number for Richard Horowitz is 1437366804. It was assigned to this individual provider in the NPPES registry on May 16, 2007.

Where is Richard Horowitz located?

Richard Horowitz practices at 8635 W 3rd St Suite 885, Los Angeles, CA 90048. The listed phone number is (310) 358-7200.

What is Richard Horowitz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Richard Horowitz enrolled in Medicare?

Yes. Richard Horowitz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does Richard Horowitz hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0949007) is associated with this NPI, valid through March 22, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Richard Horowitz was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.