NPI registry status
Active
2026 NPPES data Vascular Neurology Physician NPI 1588125231 M.D.
Verify on CMS → Jonathan Chou, M.D.
Vascular Neurology Physician in Los Angeles, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 561 in Vascular Neurology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
135
Medicare Part D claims · 36 beneficiaries · Vascular Neurology Physician avg: 378
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Jonathan Chou, M.D. filed 135 Medicare Part D claims in 2023 as a Vascular Neurology Physician in Los Angeles, California, prescribing 92% generic.
- 135
- Part D claims, 2023
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Jonathan Chou, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
135 35th percentile higher than 35% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Jonathan Chou, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Jonathan Chou, M.D.?
Quality data not reportedPrimary specialty
Vascular Neurology Physician
Medicare Part D claims
135 64% vs specialty avg
Specialty distribution in California
How Vascular Neurology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Vascular Neurology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Jonathan Chou, M.D. appears in the CMS NPPES registry as a Vascular Neurology Physician provider holding M.D. credentials at 127 S SAN VICENTE BLVD STE A6600, Los Angeles, CA, 90048, with a listed phone of (310) 423-6472. NPI 1588125231 was issued on 03/26/2019.
Medicare Part D records for calendar year 2023 show 135 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $12K in drug spend, split 8% brand-name and 92% generic by claim count.
Vascular Neurology Physician is a narrow specialty nationwide, with 561 enrolled providers across 49 states and an average of 378 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1588125231 |
|---|---|
| Specialty | Vascular Neurology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 03/26/2019 |
Hospital and facility affiliations
Facilities where Jonathan Chou, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Cedars-Sinai Medical Care Foundation
Torrance, CA
Regents OF The University OF Claifornia Univ Neursciences
Orange, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Jonathan Chou, M.D.. To verify Jonathan Chou, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Jonathan Chou, M.D. - brand share 8.0%
Vascular Neurology Physician average
8% brand-name claims vs 92% generic, on 135 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
135
Total Claims
$12K
Total Drug Cost
36
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 236
- Total Day Supply
- 6,998
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 63.8 years
- Avg HCC Risk Score
- 1.81
- Gender Split
- 31% female / 69% male
- Age Distribution
- <65: 12, 65-74: 15, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jonathan Chou, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levetiracetam
Levetiracetam
24 claims
- Gabapentin
Gabapentin
19 claims
- Baclofen
Baclofen
16 claims
| Drug | Claims |
|---|---|
| Levetiracetam | 24 |
| Gabapentin | 19 |
| Baclofen | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Vascular Neurology Physician Overview
How Jonathan Chou, M.D. fits within the Vascular Neurology Physician landscape nationally.
561
Vascular Neurology Physician Providers in US
49
States with Vascular Neurology Physician
378
Avg Claims per Provider
Jonathan Chou, M.D.'s 135 claims are below the specialty average of 378.
Nearby Vascular Neurology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Chou.
Dr. David Alexander
M.D.
Los Angeles, CA
Dr. Anna Barminova
M.D.
San Diego, CA
Dr. Daniel Brooks
M.D.
Santa Monica, CA
Dr. Adrian Burgos
MD
Whittier, CA
Dr. Stanley Carmichael
MD
Los Angeles, CA
Compare Vascular Neurology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Vascular Neurology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Jonathan Chou, M.D.'s specialty? ▼
Jonathan Chou, M.D. specializes in Vascular Neurology Physician and practices in Los Angeles, California. Credentials: M.D..
How much does Jonathan Chou, M.D. prescribe under Medicare Part D? ▼
In 2023, Jonathan Chou, M.D. wrote 135 Medicare Part D claims totaling $12K in drug costs for 36 beneficiaries.
Where is Jonathan Chou, M.D. located? ▼
Jonathan Chou, M.D. is located at 127 S SAN VICENTE BLVD STE A6600, Los Angeles, CA, 90048. Phone: (310) 423-6472.
What is Jonathan Chou, M.D.'s NPI number? ▼
Jonathan Chou, M.D.'s National Provider Identifier (NPI) is 1588125231, issued on 03/26/2019.
Does Jonathan Chou, M.D. prescribe more brand-name or generic drugs? ▼
Jonathan Chou, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $7K in brand drug costs.
How many Vascular Neurology Physician providers are there in the US? ▼
There are 561 Vascular Neurology Physician providers across 49 states in the US. The average Vascular Neurology Physician provider writes 378 Medicare Part D claims per year.
What drugs does Jonathan Chou, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Jonathan Chou, M.D.'s most frequently prescribed drugs include Levetiracetam, Gabapentin, Baclofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jonathan Chou, M.D. accept Medicare? ▼
Jonathan Chou, M.D. appears in CMS Medicare data with 135 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jonathan Chou, M.D.'s credentials? ▼
Jonathan Chou, M.D.'s NPI is 1588125231 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.