Xenos Mason, M.D.
NPI 1619358801 · Neurology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xenos Mason, M.D. is a Neurology Physician provider in Los Angeles, CA (NPI 1619358801).
Provider details
- NPI number
- 1619358801
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 273446 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 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
257 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 99 | $151 |
| Electronic Analysis of Implanted Brain, Spinal Cord, Or Peripheral Neurostimulator Generator With Brain Stimulator Programming, First 15 Minutes With Qualified Health Professional95983 | 54 | $51 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 53 | $183 |
| Electronic Analysis of Implanted Brain, Spinal Cord, Or Peripheral Neurostimulator Generator With Brain Stimulator Programming, Each Additional 15 Minutes With Qualified Health Professional95984 | 30 | $45 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 21 | $189 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 80 | 27 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 49 | 13 |
| Carbidopa/Levodopabrand: Rytary | 42 | 11 |
| Rasagiline Mesylate | 29 | — |
| Amantadine Hclbrand: Amantadine | 23 | — |
| Escitalopram Oxalate | 23 | — |
| Fludrocortisone Acetate | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$23,991 across 43 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
- 2015-06-12
- Last updated
- 2021-12-08
- Certified
- 2021-12-08
Frequently asked questions
- What is Xenos Mason's NPI number?
- Xenos Mason's National Provider Identifier (NPI) is 1619358801, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xenos Mason's specialty?
- Xenos Mason is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Xenos Mason located?
- Xenos Mason's practice location on file with NPPES is 1520 San Pablo St Ste 3800, Los Angeles, CA 90033-5328.
- What is Xenos Mason's phone number?
- The practice phone number listed in the NPPES registry for Xenos Mason is (323) 442-5720.
- Does Xenos Mason accept Medicare?
- Xenos Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xenos Mason's NPI active?
- Yes — Xenos Mason's NPI (1619358801) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.