NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1518052489 M.D.
Verify on CMS → John Zamarra, M.D.
Cardiovascular Disease Physician in Laguna Beach, 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 24,810 in Cardiovascular Disease 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
2K
Medicare Part D claims · 561 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.2/100
▼ 4 pts below national avg 83.1 · Above neutral
Industry payments
$41.31
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
John Zamarra, M.D. reported a CMS MIPS final score of 79.2/100 - below the 83.1 national average - and filed 2,379 Medicare Part D claims in 2023.
- 79.2/100
- MIPS score · -4 vs avg
- 2K
- 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.
John Zamarra, 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
79 30th percentile higher than 30% 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 John Zamarra, M.D. sits
This provider among cardiovascular disease physician peers
Across the 8,753 cardiovascular disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, John Zamarra, M.D. writes more Part D claims than 43% of them and scores higher on MIPS quality than 31% - placing this provider in the lower-volume, lower-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 cardiovascular disease physician peer from a representative sample of 60; the gold marker is John Zamarra, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
John Zamarra, M.D. 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 John Zamarra, M.D.?
Near national averagePrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
2,379 22% vs specialty avg
MIPS final score
79.2/100 3.9 pts vs avg
Specialty distribution in California
How Cardiovascular Disease Physician compares to other specialties among California providers
Medicare quality performance, MIPS
John Zamarra, M.D.'s 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average
- MIPS Final Score
- 79.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Cardiovascular Disease Physician) - 79.2/100 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).
John Zamarra, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 1750 S COAST HWY APT 13, Laguna Beach, CA, 92651, with a listed phone of (949) 575-7537. NPI 1518052489 was issued on 10/04/2006.
Medicare Part D records for calendar year 2023 show 2,379 prescription claims written by this provider, covering 561 Medicare beneficiaries and totaling roughly $718K in drug spend, split 24% brand-name and 76% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.2/100 for the 2023 performance year (Quality 86.1, Cost 47.1), compared with the national average of 83.1.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,810 enrolled providers across 54 states and an average of 3,033 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 | 1518052489 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/04/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
79.2264
Final Score
Avg: 83.1
86.143
Quality
47.1116
Cost
97
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where John Zamarra, M.D. 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.
Bear Valley Community Health Care District
Big Bear Lake, 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 John Zamarra, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$41
Largest payer
Philips North America LLC
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 John Zamarra, M.D.. To verify John Zamarra, 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 · Typical
John Zamarra, M.D. - brand share 24.0%
Cardiovascular Disease Physician average
24% brand-name claims vs 76% generic, on 2,379 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.
2,379
Total Claims
$718K
Total Drug Cost
561
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,968
- Total Day Supply
- 177,817
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $663K
- Generic Drug Cost
- $55K
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 76.5 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 28, 65-74: 220, 75-84: 202, 85+: 111
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Zamarra, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
212 claims
- Atorvastatin Calcium
Atorvastatin Calcium
174 claims
- Metoprolol Succinate
Metoprolol Succinate
165 claims
- Entresto
Entresto
109 claims
- Metoprolol Tartrate
Metoprolol Tartrate
109 claims
- Losartan Potassium
Losartan Potassium
108 claims
- Furosemide
Furosemide
104 claims
- Lisinopril
Lisinopril
102 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 212 |
| Atorvastatin Calcium | 174 |
| Metoprolol Succinate | 165 |
| Entresto Sacubitril/Valsartan | 109 |
| Metoprolol Tartrate | 109 |
| Losartan Potassium | 108 |
| Furosemide | 104 |
| Lisinopril | 102 |
| Carvedilol | 88 |
| Jardiance Empagliflozin | 78 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Cardiovascular Disease Physician Overview
How John Zamarra, M.D. fits within the Cardiovascular Disease Physician landscape nationally.
24,810
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
John Zamarra, M.D.'s 2,379 claims are below the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Zamarra.
Dr. Abdul Abbasi
MD
Long Beach, CA
Dr. Lillian Abdelmalek
MD
Sacramento, CA
Dr. Robin Abdelmalik
M.D. FACC
Temecula, CA
Dr. Roberto Abdelnur
MD
El Centro, CA
Dr. Sohail Abdi-Moradi
M.D.
Moorpark, CA
Compare Cardiovascular Disease 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 Cardiovascular Disease 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 John Zamarra, M.D.'s specialty? ▼
John Zamarra, M.D. specializes in Cardiovascular Disease Physician and practices in Laguna Beach, California. Credentials: M.D..
How much does John Zamarra, M.D. prescribe under Medicare Part D? ▼
In 2023, John Zamarra, M.D. wrote 2,379 Medicare Part D claims totaling $718K in drug costs for 561 beneficiaries.
What is John Zamarra, M.D.'s Medicare quality score? ▼
John Zamarra, M.D. has a CMS MIPS Final Score of 79.2/100 (Quality: 86.1, Cost: 47.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is John Zamarra, M.D. located? ▼
John Zamarra, M.D. is located at 1750 S COAST HWY APT 13, Laguna Beach, CA, 92651. Phone: (949) 575-7537.
What is John Zamarra, M.D.'s NPI number? ▼
John Zamarra, M.D.'s National Provider Identifier (NPI) is 1518052489, issued on 10/04/2006.
Does John Zamarra, M.D. prescribe more brand-name or generic drugs? ▼
John Zamarra, M.D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $663K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,810 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does John Zamarra, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Zamarra, M.D.'s most frequently prescribed drugs include Eliquis, Atorvastatin Calcium, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Zamarra, M.D. accept Medicare? ▼
John Zamarra, M.D. appears in CMS Medicare data with 2,379 Part D claims and 561 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Zamarra, M.D.'s credentials? ▼
John Zamarra, M.D.'s NPI is 1518052489 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
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.