Mason H. Weiss, M.D.
Specialist · Inglewood, CA
Mason H. Weiss, M.D. is a specialist with a practice address in Inglewood, California, and NPI 1447256565, issued on Jun 23, 2005. Check the license (California G44527, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mason H. Weiss
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G44527 CA
Self-reported in NPPES; status is on the state search - Practice location
- 501 E Hardy St, Inglewood, CA 90301
- Phone
- (310) 672-3900
- Enumerated
- Jun 23, 2005
- Record last updated
- Nov 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (310) 671-8438
- Medicaid ID
- 00G445270 CA
- Medicare enrollment
- Enrolled (PECOS I20100323000090); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 501 E Hardy St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Immaculate Anebere, NPFamily Nurse Practitioner1720697683
- Sabrina BerkheimerBehavior Analyst1609635440
- Marjan Chegounchi, MDInternal Medicine Physician1285660456
- Eric Chew, PA-CMedical Physician Assistant1104972462
- Jack Farahi, M.D.Specialist1225034358
- Phillip Frankel, M.D.Specialist1962408070
Verify Mason H. Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G44527Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.7 times the Medicare Part D claims of the average specialist in 2024
7,817 Medicare Part D claims for 826 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium472 claims
- Amlodipine Besylate389 claims
- Eliquis359 claims
- Triamterene-Hydrochlorothiazid347 claims
- Carvedilol327 claims
- Furosemide327 claims
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.
The MIPS final score for 2023 (Medicare payment program): 89.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $500.24
25 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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.
Bills Medicare through one group practice
- Apex Cardiology ConsultantsInglewood, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mason H. Weiss among 5,749 specialist records in California
Mason H. Weiss, M.D. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1975 · median 1989 among the 1,075 with a school on file
- Record last updated2021 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 specialist records list a practice address in Inglewood
They are 16 of the 1,428 NPPES records with a practice address in Inglewood, and 5,749 specialist records in California.
All 5,749 in California → Every provider in Inglewood → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Charmayne Cahn, PHYSICAL THERAPISTInglewood, CA 903011700336948
- Edem EnoInglewood, CA 903011801996723
- Jack Farahi, M.D.Inglewood, CA 903011225034358
- Phillip Frankel, M.D.Inglewood, CA 903011962408070
- Vernon Hattori, M.D.Inglewood, CA 903011568468684
- Ibrahim Helmy, M.D.Inglewood, CA 903011598795247
- Simon Kangavari, M.D.Inglewood, CA 903011710984208
- Anitha Mitchell, M.D.Inglewood, CA 903011891842670
Common questions
What is Mason H. Weiss, M.D.'s NPI number?
Mason H. Weiss, M.D.'s National Provider Identifier (NPI) is 1447256565, issued on Jun 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mason H. Weiss, M.D. located?
The NPPES record lists a practice address at 501 E Hardy St, Inglewood, CA, 90301. Phone: (310) 672-3900. Providers update this record themselves, so call before visiting.
How can I verify Mason H. Weiss, M.D.'s license?
NPPES lists California license number G44527, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mason H. Weiss, M.D. prescribe under Medicare Part D?
In 2024, Mason H. Weiss, M.D. had 7,817 Medicare Part D claims for 826 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Mason H. Weiss, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.