NPI registry status
Active
2026 NPPES data Surgery Physician NPI 1720425846
Verify on CMS → Jason Chen
Surgery 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 36,191 in Surgery 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
188
Medicare Part D claims · 70 beneficiaries · Surgery Physician avg: 169
Industry payments
$20.98
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Jason Chen filed 188 Medicare Part D claims in 2023 as a Surgery Physician in Los Angeles, California.
- 188
- Part D claims, 2023
- 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.
Jason Chen's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
188 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)
Jason Chen practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Jason Chen?
Quality data not reportedPrimary specialty
Surgery Physician
Medicare Part D claims
188 11% vs specialty avg
Specialty distribution in California
How Surgery 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 Surgery 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).
Jason Chen appears in the CMS NPPES registry as a Surgery Physician provider at 1520 SAN PABLO ST STE 4300, Los Angeles, CA, 90033, with a listed phone of (323) 442-9064. NPI 1720425846 was issued on 05/30/2013.
Medicare Part D records for calendar year 2023 show 188 prescription claims written by this provider, covering 70 Medicare beneficiaries and totaling roughly $9K in drug spend, with an opioid prescribing rate of 20.2%.
Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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 | 1720425846 |
|---|---|
| Specialty | Surgery Physician |
| Gender | Male |
| NPI Issued | 05/30/2013 |
Hospital and facility affiliations
Facilities where Jason Chen 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.
Permanente Medical Group Inc
Dublin, 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).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Jason Chen. Source: openpaymentsdata.cms.gov.
Total received
$21
Largest payer
Cranial Technologies, Inc
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Jason Chen. To verify Jason Chen'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
188
Total Claims
$9K
Total Drug Cost
70
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 206
- Total Day Supply
- 2,331
- Generic Drug Cost
- $2K
- Opioid Claims
- 38 (20.2% rate)
- Antibiotic Claims
- 69
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.36
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jason Chen prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone Hcl
Oxycodone Hcl
31 claims
- Metronidazole
Metronidazole
30 claims
- Neomycin Sulfate
Neomycin Sulfate
16 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 31 |
| Metronidazole | 30 |
| Neomycin Sulfate | 16 |
| Gavilyte-C "Peg3350/Sod Sulf | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgery Physician Overview
How Jason Chen fits within the Surgery Physician landscape nationally.
36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider
Jason Chen's 188 claims are above the specialty average of 169.
Nearby Surgery Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Chen.
Dr. Oliver Aalami
M.D.
Stanford, CA
Dr. Shahram Aarabi
MD
Oakland, CA
Dr. Miriam Abaunza
M.D.
Los Angeles, CA
Dr. Benjamin Abbadessa
M.D.
San Diego, CA
Abdul-Rahman Abdel-Reheem
Los Angeles, CA
Compare Surgery 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 Surgery 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
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Frequently Asked Questions
What is Jason Chen's specialty? ▼
Jason Chen specializes in Surgery Physician and practices in Los Angeles, California.
How much does Jason Chen prescribe under Medicare Part D? ▼
In 2023, Jason Chen wrote 188 Medicare Part D claims totaling $9K in drug costs for 70 beneficiaries.
Where is Jason Chen located? ▼
Jason Chen is located at 1520 SAN PABLO ST STE 4300, Los Angeles, CA, 90033. Phone: (323) 442-9064.
What is Jason Chen's NPI number? ▼
Jason Chen's National Provider Identifier (NPI) is 1720425846, issued on 05/30/2013.
Does Jason Chen prescribe opioids? ▼
Yes, Jason Chen had 38 opioid claims in 2023 with an opioid prescribing rate of 20.2%.
How many Surgery Physician providers are there in the US? ▼
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does Jason Chen prescribe most often? ▼
Based on 2023 Medicare Part D data, Jason Chen's most frequently prescribed drugs include Oxycodone Hcl, Metronidazole, Neomycin Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jason Chen accept Medicare? ▼
Jason Chen appears in CMS Medicare data with 188 Part D claims and 70 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jason Chen's credentials? ▼
Jason Chen's NPI is 1720425846. 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.