Mason Weiss, M.D.
NPI 1447256565 · Specialist · Inglewood, CA
Enrolled with Medicare as Practitioner - Interventional Cardiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mason Weiss, M.D. is a Specialist provider in Inglewood, CA (NPI 1447256565).
Provider details
- NPI number
- 1447256565
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G44527 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
44,166 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 2,542 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 2,119 | $145 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 1,849 | $18 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 1,671 | $56 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,295 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 472 | 149 |
| Amlodipine Besylate | 389 | 125 |
| Apixabanbrand: Eliquis | 359 | 96 |
| Triamterene/Hydrochlorothiazidbrand: Triamterene-Hydrochlorothiazid | 347 | 129 |
| Furosemide | 327 | 109 |
| Carvedilol | 327 | 101 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$500 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-23
- Last updated
- 2021-11-10
- Certified
- 2021-11-10
Frequently asked questions
- What is Mason Weiss's NPI number?
- Mason Weiss's National Provider Identifier (NPI) is 1447256565, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mason Weiss's specialty?
- Mason Weiss is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Mason Weiss located?
- Mason Weiss's practice location on file with NPPES is 501 E Hardy St, Inglewood, CA 90301-4057.
- What is Mason Weiss's phone number?
- The practice phone number listed in the NPPES registry for Mason Weiss is (310) 672-3900.
- Does Mason Weiss accept Medicare?
- Mason Weiss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mason Weiss's NPI active?
- Yes — Mason Weiss's NPI (1447256565) is active in the NPPES registry as of the last update on 2021-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.