NPI registry status
Active
2026 NPPES data Interventional Cardiology Physician NPI 1871519561 MD
Verify on CMS → Peter Fung, MD
Interventional Cardiology Physician in Alhambra, 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 3,400 in Interventional Cardiology 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
10K
Medicare Part D claims · 1K beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
95.3/100
▲ 12 pts above national avg 83.1 · Exceptional
Industry payments
$473.07
15 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
Peter Fung, MD reported a CMS MIPS final score of 95.3/100 - above the 83.1 national average - and filed 10,289 Medicare Part D claims in 2023.
- 95.3/100
- MIPS score · +12 vs avg
- 10K
- Part D claims, 2023
- 83%
- 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.
Peter Fung, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
95 Top 21% higher than 79% 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 Peter Fung, MD sits
This provider among interventional cardiology physician peers
Across the 1,386 interventional cardiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Peter Fung, MD writes more Part D claims than 97% of them and scores higher on MIPS quality than 80% - placing this provider in the high-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 interventional cardiology physician peer from a representative sample of 60; the gold marker is Peter Fung, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Peter Fung, MD 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 Peter Fung, MD?
High performer (top quartile)Primary specialty
Interventional Cardiology Physician
Medicare Part D claims
10,289 245% vs specialty avg
MIPS final score
95.3/100 12.2 pts vs avg
Specialty distribution in California
How Interventional Cardiology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Peter Fung, MD's 2023 MIPS final score plotted against the Interventional Cardiology Physician national average
- MIPS Final Score
- 95.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Interventional Cardiology Physician) - 95.3/100 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).
Peter Fung, MD appears in the CMS NPPES registry as an Interventional Cardiology Physician provider holding MD credentials at 220 S 1ST ST, Alhambra, CA, 91801, with a listed phone of (626) 281-8663. NPI 1871519561 was issued on 07/14/2006.
Medicare Part D records for calendar year 2023 show 10,289 prescription claims written by this provider, covering 1,052 Medicare beneficiaries and totaling roughly $1.8 million in drug spend, split 17% brand-name and 83% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 95.3/100 for the 2023 performance year (Quality 85.1, Cost 74.3), compared with the national average of 83.1.
Interventional Cardiology Physician is a narrow specialty nationwide, with 3,400 enrolled providers across 53 states and an average of 2,984 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 | 1871519561 |
|---|---|
| Specialty | Interventional Cardiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
95.2878
Final Score
Avg: 83.1
85.0834
Quality
74.3145
Cost
Reporting: Group practice
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 Peter Fung, MD. Source: openpaymentsdata.cms.gov.
Total received
$473
Largest payer
CVRx, 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 Peter Fung, MD. To verify Peter Fung, 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
Peter Fung, MD - brand share 17.0%
Interventional Cardiology Physician average
17% brand-name claims vs 83% generic, on 10,289 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.
10,289
Total Claims
$1.8M
Total Drug Cost
1,052
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 21,175
- Total Day Supply
- 632,818
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $1.5M
- Generic Drug Cost
- $276K
Patient Demographics
- Average Patient Age
- 79.1 years
- Avg HCC Risk Score
- 1.85
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 20, 65-74: 332, 75-84: 414, 85+: 286
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Peter Fung, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metoprolol Succinate
Metoprolol Succinate
935 claims
- Amlodipine Besylate
Amlodipine Besylate
846 claims
- Atorvastatin Calcium
Atorvastatin Calcium
816 claims
- Eliquis
Eliquis
673 claims
- Losartan Potassium
Losartan Potassium
611 claims
- Isosorbide Mononit…
Isosorbide Mononitrate Er
391 claims
- Carvedilol 366
Carvedilol
366 claims
- Rosuvastatin Calcium 329
Rosuvastatin Calcium
329 claims
| Drug | Claims |
|---|---|
| Metoprolol Succinate | 935 |
| Amlodipine Besylate | 846 |
| Atorvastatin Calcium | 816 |
| Eliquis Apixaban | 673 |
| Losartan Potassium | 611 |
| Isosorbide Mononitrate Er Isosorbide Mononitrate | 391 |
| Carvedilol | 366 |
| Rosuvastatin Calcium | 329 |
| Clopidogrel Clopidogrel Bisulfate | 298 |
| Hydrochlorothiazide | 229 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Interventional Cardiology Physician in CA →
All providers in California →
Compare specialties →
Interventional Cardiology Physician Overview
How Peter Fung, MD fits within the Interventional Cardiology Physician landscape nationally.
3,400
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider
Peter Fung, MD's 10,289 claims are above the specialty average of 2,984.
Nearby Interventional Cardiology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Fung.
Ayman Abdelkarim
Torrance, CA
Dr. Obai Abdullah
MD
Carmichael, CA
Dr. Chandrahas Agarwal
M.D.
Rancho Cucamonga, CA
Dr. Ashish Aggarwal
M.D.
Encino, CA
Dr. Atul Aggarwal
MD
Bakersfield, CA
Compare Interventional Cardiology 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 Interventional Cardiology 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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
Explore California
Frequently Asked Questions
What is Peter Fung, MD's specialty? ▼
Peter Fung, MD specializes in Interventional Cardiology Physician and practices in Alhambra, California. Credentials: MD.
How much does Peter Fung, MD prescribe under Medicare Part D? ▼
In 2023, Peter Fung, MD wrote 10,289 Medicare Part D claims totaling $1.8M in drug costs for 1,052 beneficiaries.
What is Peter Fung, MD's Medicare quality score? ▼
Peter Fung, MD has a CMS MIPS Final Score of 95.3/100 (Quality: 85.1, Cost: 74.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Peter Fung, MD located? ▼
Peter Fung, MD is located at 220 S 1ST ST, Alhambra, CA, 91801. Phone: (626) 281-8663.
What is Peter Fung, MD's NPI number? ▼
Peter Fung, MD's National Provider Identifier (NPI) is 1871519561, issued on 07/14/2006.
Does Peter Fung, MD prescribe more brand-name or generic drugs? ▼
Peter Fung, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $1.5M in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US? ▼
There are 3,400 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does Peter Fung, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Peter Fung, MD's most frequently prescribed drugs include Metoprolol Succinate, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Peter Fung, MD accept Medicare? ▼
Peter Fung, MD appears in CMS Medicare data with 10,289 Part D claims and 1,052 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Peter Fung, MD's credentials? ▼
Peter Fung, MD's NPI is 1871519561 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.