NPI registry status
Active
2026 NPPES data Neurology Physician NPI 1730576687 M.D.
Verify on CMS → Tracy Chang, M.D.
Neurology Physician in North Hollywood, 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 19,885 in 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
506
Medicare Part D claims · 96 beneficiaries · Neurology Physician avg: 1K
MIPS score
88/100
▲ 5 pts above national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Tracy Chang, M.D. reported a CMS MIPS final score of 88/100 - above the 83.1 national average - and filed 506 Medicare Part D claims in 2023.
- 88/100
- MIPS score · +5 vs avg
- 506
- 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.
Tracy Chang, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
88 Top 44% higher than 56% 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 Tracy Chang, M.D. sits
This provider among neurology physician peers
Across the 5,437 neurology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Tracy Chang, M.D. writes more Part D claims than 34% of them and scores higher on MIPS quality than 59% - 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 neurology physician peer from a representative sample of 60; the gold marker is Tracy Chang, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Tracy Chang, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Tracy Chang, M.D.?
High performer (top quartile)Primary specialty
Neurology Physician
Medicare Part D claims
506 61% vs specialty avg
MIPS final score
88/100 4.9 pts vs avg
Specialty distribution in California
How Neurology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Tracy Chang, M.D.'s 2023 MIPS final score plotted against the Neurology Physician national average
- MIPS Final Score
- 88/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Neurology Physician) - 88/100 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).
Tracy Chang, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 6260 SIMPSON AVE, North Hollywood, CA, 91606, with a listed phone of (818) 821-4996. NPI 1730576687 was issued on 04/17/2015.
Medicare Part D records for calendar year 2023 show 506 prescription claims written by this provider, covering 96 Medicare beneficiaries and totaling roughly $43K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 88/100 for the 2023 performance year (Quality 78.6, Cost 58.4), compared with the national average of 83.1.
Neurology Physician is a mid-sized specialty nationwide, with 19,885 enrolled providers across 54 states and an average of 1,309 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 | 1730576687 |
|---|---|
| Specialty | Neurology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 04/17/2015 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
88.0145
Final Score
Avg: 83.1
78.5781
Quality
58.3973
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Tracy Chang, M.D.. To verify Tracy Chang, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
506
Total Claims
$43K
Total Drug Cost
96
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 540
- Total Day Supply
- 14,666
- Generic Drug Cost
- $11K
- Antibiotic Claims
- 14
Patient Demographics
- Average Patient Age
- 78.6 years
- Avg HCC Risk Score
- 3.23
- Gender Split
- 44% female / 56% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Tracy Chang, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
33 claims
- Pantoprazole Sodium
Pantoprazole Sodium
28 claims
- Tamsulosin Hcl
Tamsulosin Hcl
22 claims
- Amlodipine Besylate
Amlodipine Besylate
18 claims
- Clopidogrel
Clopidogrel
14 claims
- Eliquis
Eliquis
14 claims
- Losartan Potassium 13
Losartan Potassium
13 claims
- Metoprolol Succinate 12
Metoprolol Succinate
12 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 33 |
| Pantoprazole Sodium | 28 |
| Tamsulosin Hcl | 22 |
| Amlodipine Besylate | 18 |
| Clopidogrel Clopidogrel Bisulfate | 14 |
| Eliquis Apixaban | 14 |
| Losartan Potassium | 13 |
| Metoprolol Succinate | 12 |
| Ondansetron Odt Ondansetron | 12 |
| Famotidine | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurology Physician Overview
How Tracy Chang, M.D. fits within the Neurology Physician landscape nationally.
19,885
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider
Tracy Chang, M.D.'s 506 claims are below the specialty average of 1,309.
Nearby Neurology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Chang.
Dr. Venkat Raghav Aachi
MD
Thousand Oaks, CA
Dr. John Aalbers
M.D.
San Diego, CA
Dr. Puya Abbassi
D.O.
San Jose, CA
Dr. Ahmed Abdelhak
MB CHB
San Francisco, CA
Dr. Justin Abraham
M.D., M.B.A.
Santa Barbara, CA
Compare 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 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 Tracy Chang, M.D.'s specialty? ▼
Tracy Chang, M.D. specializes in Neurology Physician and practices in North Hollywood, California. Credentials: M.D..
How much does Tracy Chang, M.D. prescribe under Medicare Part D? ▼
In 2023, Tracy Chang, M.D. wrote 506 Medicare Part D claims totaling $43K in drug costs for 96 beneficiaries.
What is Tracy Chang, M.D.'s Medicare quality score? ▼
Tracy Chang, M.D. has a CMS MIPS Final Score of 88/100 (Quality: 78.6, Cost: 58.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Tracy Chang, M.D. located? ▼
Tracy Chang, M.D. is located at 6260 SIMPSON AVE, North Hollywood, CA, 91606. Phone: (818) 821-4996.
What is Tracy Chang, M.D.'s NPI number? ▼
Tracy Chang, M.D.'s National Provider Identifier (NPI) is 1730576687, issued on 04/17/2015.
How many Neurology Physician providers are there in the US? ▼
There are 19,885 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does Tracy Chang, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Tracy Chang, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Pantoprazole Sodium, Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tracy Chang, M.D. accept Medicare? ▼
Tracy Chang, M.D. appears in CMS Medicare data with 506 Part D claims and 96 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tracy Chang, M.D.'s credentials? ▼
Tracy Chang, M.D.'s NPI is 1730576687 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.
- 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.