DR. MASON H WEISS M.D.
NPI 1447256565
Specialist in Inglewood, CA

Active since June 23, 2005PECOS EnrolledAccepts Medicare Assignment
89.78/100
CMS Quality Rating
501 E HARDY ST, STE 200, INGLEWOOD, CA 90301(310) 672-3900(310) 671-8438 Get Directions Write a Review

NPPES record last updated: November 10, 2021. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Mason H Weiss M.d. NPPES

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

DR. MASON H WEISS M.D. (NPI 1447256565) is an individual specialist in Inglewood, California, licensed in California (G44527) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1975).

NPPES Registry Identity

NPI1447256565
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. MASON H WEISSCredential: M.D.
Location Address501 E HARDY ST, STE 200Inglewood, CA 90301-4057
Mailing Address501 E Hardy St, Ste 200Inglewood, CA 90301-4057 · (310) 672-3900 · Fax (310) 671-8438
Fax(310) 671-8438
Sole ProprietorNo
Medical School CMSOtherGraduated 1975
Enumeration DateJune 23, 2005
Last NPPES UpdateNovember 10, 2021
NPPES CertifiedNovember 10, 2021
NPI 1447256565 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License Licensed in CA · G44527
Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

501 E HARDY ST, Inglewood, CA 90301

Other Identifiers 3

Other95-4170981CA · Group Provider Id
OtherG44527CA · Medical License
Medicaid00G445270CA

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. Mason H Weiss 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 ID4789660119
PECOS Enrollment IDI20100323000090
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.

Areas of Expertise CMS Part B claims 74

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.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967
Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.
11,555 services102 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.
2,065 services551 patients
Established patient office or other outpatient visit, 30-39 minutes 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.
1,637 services482 patients
Measure of severe acute respiratory syndrome coronavirus 2 (covid-19) antibody 86769
This procedure checks for antibodies to the COVID-19 virus in your blood. It indicates whether you've had a past infection. The body produces these antibodies while fighting off the virus. It's not a test for current infection.
883 services395 patients
Natriuretic peptide (heart and blood vessel protein) level 83880
A natriuretic peptide level test is a blood test that helps doctors check for heart failure. It measures the amount of certain proteins that your heart and blood vessels produce when they are under stress. High levels may indicate heart disease.
877 services444 patients
Blood test, basic group of blood chemicals (calcium, ionized) 80047
A basic group of blood chemicals test, including calcium and ionized, is a simple procedure where a small amount of blood is drawn from your arm. This test helps assess your body's overall health and detect potential disorders like kidney disease or bone disease.
856 services418 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

89.78/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality70.17
Improvement Activities40
Cost72.39

Reported Quality Measures

Controlling High Blood Pressure
57%1,229 patients3/55-star benchmark: 91%
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
81%572 patients1/55-star benchmark: 91%
Documentation of Current Medications in the Medical Record
98%6,665 patients4/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
99%1,135 patients4/55-star benchmark: 100%
Functional Status Assessments for Heart Failure
0%48 patients
Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
38%938 patients3/55-star benchmark: 61%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers54 claims54 services$14.32 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers55 claims55 services$65.04 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.

Specialist
501 E HARDY ST, STE 200
INGLEWOOD, CA 90301
Podiatrist
501 E HARDY ST
INGLEWOOD, CA 90301
Internal Medicine (Endocrinology, Diabetes & Metabolism)
501 E HARDY ST, SUITE 425
INGLEWOOD, CA 90301
Dietitian, Registered
501 E HARDY ST, SUITE 100
INGLEWOOD, CA 90301
Physical Therapist (Orthopedic)
501 E HARDY ST, SUITE 410
INGLEWOOD, CA 90301
Internal Medicine (Endocrinology, Diabetes & Metabolism)
501 E HARDY ST, SUITE 425
INGLEWOOD, CA 90301
Clinic/Center (Community Health)
501 E HARDY ST, SUITE 110
INGLEWOOD, CA 90301
Internal Medicine (Gastroenterology)
501 E HARDY ST, SUITE 430
INGLEWOOD, CA 90301

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 Mason Weiss's NPI number?

The NPI number for Mason Weiss is 1447256565. It was assigned to this individual provider in the NPPES registry on June 23, 2005.

Where is Mason Weiss located?

Mason Weiss practices at 501 E Hardy St Ste 200, Inglewood, CA 90301. The listed phone number is (310) 672-3900.

What is Mason Weiss's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Mason Weiss enrolled in Medicare?

Yes. Mason Weiss 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.

When was this NPI record last updated?

The NPPES record for Mason Weiss was last updated on November 10, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.