NPI registry status
Active
2026 NPPES data Hematology & Oncology Physician NPI 1649219452 MD
Verify on CMS → Kevin Chang, MD
Hematology & Oncology Physician in Oxnard, 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 11,232 in Hematology & Oncology 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
542
Medicare Part D claims · 117 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Industry payments
$4.7K
151 payments · CMS Open Payments (Sunshine Act)
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
Kevin Chang, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 542 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 542
- Part D claims, 2023
- 76%
- 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.
Kevin Chang, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Kevin Chang, MD sits
This provider among hematology & oncology physician peers
Across the 4,233 hematology & oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Kevin Chang, MD writes more Part D claims than 39% of them and scores higher on MIPS quality than 91% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one hematology & oncology physician peer from a representative sample of 60; the gold marker is Kevin Chang, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Kevin Chang, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Kevin Chang, MD?
High performer (top quartile)Primary specialty
Hematology & Oncology Physician
Medicare Part D claims
542 36% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in California
How Hematology & Oncology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Kevin Chang, MD's 2023 MIPS final score plotted against the Hematology & Oncology Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Hematology & Oncology Physician) - 100/100 vs national avg 83.1
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).
Kevin Chang, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 1700 N ROSE AVE, Oxnard, CA, 93030, with a listed phone of (805) 485-8709. NPI 1649219452 was issued on 06/06/2006.
Medicare Part D records for calendar year 2023 show 542 prescription claims written by this provider, covering 117 Medicare beneficiaries and totaling roughly $2.0 million in drug spend, split 24% brand-name and 76% generic by claim count, with an opioid prescribing rate of 2.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 96.1, Cost 100), compared with the national average of 83.1.
Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,232 enrolled providers across 54 states and an average of 847 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 | 1649219452 |
|---|---|
| Specialty | Hematology & Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/06/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
96.1327
Quality
100
Cost
Reporting: Individual
Hospital and facility affiliations
Facilities where Kevin Chang, MD 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.
Pmk Medical Group, Inc.
Oxnard, 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 Kevin Chang, MD. Source: openpaymentsdata.cms.gov.
Total received
$4.7K
Largest payer
Novartis Pharmaceuticals Corporation
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 Kevin Chang, MD. To verify Kevin Chang, MD'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 · Typical
Kevin Chang, MD - brand share 24.0%
Hematology & Oncology Physician average
24% brand-name claims vs 76% generic, on 542 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.
542
Total Claims
$2.0M
Total Drug Cost
117
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 752
- Total Day Supply
- 20,853
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $1.8M
- Generic Drug Cost
- $146K
- Opioid Claims
- 12 (2.2% rate)
- Antibiotic Claims
- 32
Patient Demographics
- Average Patient Age
- 77.1 years
- Avg HCC Risk Score
- 1.96
- 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 Kevin Chang, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
71 claims
- Prednisone
Prednisone
61 claims
- Acyclovir
Acyclovir
30 claims
- Abiraterone Acetate 26
Abiraterone Acetate
26 claims
- Allopurinol 25
Allopurinol
25 claims
- Ondansetron Odt 22
Ondansetron Odt
22 claims
- Sulfamethoxazole-T… 22
Sulfamethoxazole-Trimethoprim
22 claims
- Dexamethasone 21
Dexamethasone
21 claims
| Drug | Claims |
|---|---|
| Anastrozole | 71 |
| Prednisone | 61 |
| Acyclovir | 30 |
| Abiraterone Acetate | 26 |
| Allopurinol | 25 |
| Ondansetron Odt Ondansetron | 22 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 22 |
| Dexamethasone | 21 |
| Imbruvica Ibrutinib | 21 |
| Folic Acid | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hematology & Oncology Physician Overview
How Kevin Chang, MD fits within the Hematology & Oncology Physician landscape nationally.
11,232
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider
Kevin Chang, MD's 542 claims are below the specialty average of 847.
Nearby Hematology & Oncology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Chang.
Dr. Mark Abate
M.D.
Santa Barbara, CA
Dr. Iman Abdalla
MD
Los Angeles, CA
Dr. Nihal Abdulla
MD
Los Alamitos, CA
Dr. Oyewale Abidoye
M.D.
La Jolla, CA
Dr. Mohamad Adada
M.D., PHD
Roseville, CA
Compare Hematology & Oncology 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 Hematology & Oncology 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 Kevin Chang, MD's specialty? ▼
Kevin Chang, MD specializes in Hematology & Oncology Physician and practices in Oxnard, California. Credentials: MD.
How much does Kevin Chang, MD prescribe under Medicare Part D? ▼
In 2023, Kevin Chang, MD wrote 542 Medicare Part D claims totaling $2.0M in drug costs for 117 beneficiaries.
What is Kevin Chang, MD's Medicare quality score? ▼
Kevin Chang, MD has a CMS MIPS Final Score of 100/100 (Quality: 96.1, Cost: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Kevin Chang, MD located? ▼
Kevin Chang, MD is located at 1700 N ROSE AVE, Oxnard, CA, 93030. Phone: (805) 485-8709.
What is Kevin Chang, MD's NPI number? ▼
Kevin Chang, MD's National Provider Identifier (NPI) is 1649219452, issued on 06/06/2006.
Does Kevin Chang, MD prescribe more brand-name or generic drugs? ▼
Kevin Chang, MD's prescribing is 24% brand-name and 76% generic drugs by claim count, with $1.8M in brand drug costs.
Does Kevin Chang, MD prescribe opioids? ▼
Yes, Kevin Chang, MD had 12 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
How many Hematology & Oncology Physician providers are there in the US? ▼
There are 11,232 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does Kevin Chang, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Kevin Chang, MD's most frequently prescribed drugs include Anastrozole, Prednisone, Acyclovir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kevin Chang, MD accept Medicare? ▼
Kevin Chang, MD appears in CMS Medicare data with 542 Part D claims and 117 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kevin Chang, MD's credentials? ▼
Kevin Chang, MD's NPI is 1649219452 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.