NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1598111874 M.D.
Verify on CMS → Alan Chen, M.D.
Student in an Organized Health Care Education/Training Program 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 331,761 in Student in an Organized Health Care Education/Training Program, 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
536
Medicare Part D claims · 30 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
Generic prescribing
95%
generic claims · 5% 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
Alan Chen, M.D. filed 536 Medicare Part D claims in 2023 as a Student in an Organized Health Care Education/Training Program in Los Angeles, California, prescribing 95% generic.
- 536
- Part D claims, 2023
- 95%
- generic prescribing
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.
Alan Chen, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
536 Top 34% higher than 66% 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
What does the federal data show about Alan Chen, M.D.?
Quality data not reportedPrimary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
536 17% vs specialty avg
Specialty distribution in California
How Student in an Organized Health Care Education/Training Program 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 Student in an Organized Health Care Education/Training Program. 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).
Alan Chen, M.D. appears in the CMS NPPES registry as a Student in an Organized Health Care Education/Training Program provider holding M.D. credentials at 1520 SAN PABLO ST STE 1652, Los Angeles, CA, 90033, with a listed phone of (323) 442-6000. NPI 1598111874 was issued on 05/05/2016.
Medicare Part D records for calendar year 2023 show 536 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $161K in drug spend, split 5% brand-name and 95% generic by claim count.
Student in an Organized Health Care Education/Training Program is a high-volume specialty nationwide, with 331,761 enrolled providers across 55 states and an average of 459 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 | 1598111874 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/05/2016 |
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 Alan Chen, M.D.. To verify Alan Chen, 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
Alan Chen, M.D. - brand share 5.0%
Student in an Organized Health Care Education/Training Program average
5% brand-name claims vs 95% generic, on 536 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.
536
Total Claims
$161K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 549
- Total Day Supply
- 15,545
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $125K
- Generic Drug Cost
- $36K
Patient Demographics
- Average Patient Age
- 56.6 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 43% female / 57% male
- Age Distribution
- <65: 19, 65-74: N/A, 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 Alan Chen, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trazodone Hcl
Trazodone Hcl
78 claims
- Lurasidone Hcl
Lurasidone Hcl
46 claims
- Risperidone
Risperidone
45 claims
- Benztropine Mesylate
Benztropine Mesylate
35 claims
- Aripiprazole
Aripiprazole
34 claims
- Divalproex Sodium Er 31
Divalproex Sodium Er
31 claims
- Gabapentin 30
Gabapentin
30 claims
- Sertraline Hcl 30
Sertraline Hcl
30 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 78 |
| Lurasidone Hcl | 46 |
| Risperidone | 45 |
| Benztropine Mesylate | 35 |
| Aripiprazole | 34 |
| Divalproex Sodium Er Divalproex Sodium | 31 |
| Gabapentin | 30 |
| Sertraline Hcl | 30 |
| Clonazepam | 23 |
| Fluoxetine Hcl | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Student in an Organized Health Care Education/Training Program in CA →
All providers in California →
Compare specialties →
Student in an Organized Health Care Education/Training Program Overview
How Alan Chen, M.D. fits within the Student in an Organized Health Care Education/Training Program landscape nationally.
331,761
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
459
Avg Claims per Provider
Alan Chen, M.D.'s 536 claims are above the specialty average of 459.
Nearby Student in an Organized Health Care Education/Training Program Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Chen.
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 Student in an Organized Health Care Education/Training Program 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 Alan Chen, M.D.'s specialty? ▼
Alan Chen, M.D. specializes in Student in an Organized Health Care Education/Training Program and practices in Los Angeles, California. Credentials: M.D..
How much does Alan Chen, M.D. prescribe under Medicare Part D? ▼
In 2023, Alan Chen, M.D. wrote 536 Medicare Part D claims totaling $161K in drug costs for 30 beneficiaries.
Where is Alan Chen, M.D. located? ▼
Alan Chen, M.D. is located at 1520 SAN PABLO ST STE 1652, Los Angeles, CA, 90033. Phone: (323) 442-6000.
What is Alan Chen, M.D.'s NPI number? ▼
Alan Chen, M.D.'s National Provider Identifier (NPI) is 1598111874, issued on 05/05/2016.
Does Alan Chen, M.D. prescribe more brand-name or generic drugs? ▼
Alan Chen, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $125K in brand drug costs.
How many Student in an Organized Health Care Education/Training Program providers are there in the US? ▼
There are 331,761 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 459 Medicare Part D claims per year.
What drugs does Alan Chen, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Alan Chen, M.D.'s most frequently prescribed drugs include Trazodone Hcl, Lurasidone Hcl, Risperidone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alan Chen, M.D. accept Medicare? ▼
Alan Chen, M.D. appears in CMS Medicare data with 536 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alan Chen, M.D.'s credentials? ▼
Alan Chen, M.D.'s NPI is 1598111874 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.