Xenos Lloyd Mason, M.D.
Neurology Physician · Los Angeles, CA
Xenos Lloyd Mason, M.D. is a neurology physician with a practice address in Los Angeles, California, and NPI 1619358801, issued on Jun 12, 2015. Check the license (California A162496, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Xenos Lloyd Mason
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- A162496 CA
273446 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1520 San Pablo St Ste 3800, Los Angeles, CA 90033
- Phone
- (323) 442-5720
- Enumerated
- Jun 12, 2015
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210527002360); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 1520 San Pablo St Ste 3800
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David Cheng, M.D.Pain Medicine (Physical Medicine & Rehabilitation) Physician1316114119
- Sarah Cho, PA-CPhysician Assistant1427619576
- Tatsuhiro Fujii, M.D.Neurological Surgery Physician1538605241
- Mahshid GhazaryanNurse Practitioner1548180789
Verify Xenos Lloyd Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A162496Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average neurology physician in 2024
503 Medicare Part D claims for 63 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Carbidopa-Levodopa80 claims
- Carbidopa-Levodopa Er49 claims
- Rytary42 claims
- Rasagiline Mesylate29 claims
- Amantadine23 claims
- Escitalopram Oxalate23 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.
Industry payments in 2024: $23,991.45
43 payments; by number, the most common kind was travel and lodging; the largest payer was Abbott Laboratories. The 10,858 providers of this specialty with any payment received $8,318.07 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 2 group practices
- Usc Care Medical Group IncLos Angeles, CA
- Venice Family ClinicVenice, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Xenos Lloyd Mason among 2,339 neurology physician records in California
Xenos Lloyd Mason, M.D. is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 75% of them.
- NPI issued2015 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2015 · median 2006 among the 1,628 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in Los Angeles → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Margaret Burnett, M.D.Los Angeles, CA 900331679500904
- Helena Chui, M.D.Los Angeles, CA 900331629001086
- Francisco Gonzalez-Scarano, MDLos Angeles, CA 900331063446722
- Jennifer Hui, M.D.Los Angeles, CA 900331730123837
- Norman Kachuck, M.D.Los Angeles, CA 900331811938525
- Mark Lew, M.D.Los Angeles, CA 900331578507505
- Patrick Lyden, M.D.Los Angeles, CA 900331215962113
- Giselle Petzinger, M.D.Los Angeles, CA 900331003857715
Common questions
What is Xenos Lloyd Mason, M.D.'s NPI number?
Xenos Lloyd Mason, M.D.'s National Provider Identifier (NPI) is 1619358801, issued on Jun 12, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Xenos Lloyd Mason, M.D. located?
The NPPES record lists a practice address at 1520 San Pablo St Ste 3800, Los Angeles, CA, 90033. Phone: (323) 442-5720. Providers update this record themselves, so call before visiting.
How can I verify Xenos Lloyd Mason, M.D.'s license?
NPPES lists California license number A162496, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Xenos Lloyd Mason, M.D. prescribe under Medicare Part D?
In 2024, Xenos Lloyd Mason, M.D. had 503 Medicare Part D claims for 63 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
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.