NPI registry status
Active
2026 NPPES data Nuclear Cardiology Physician NPI 1598924573 D.O.
Verify on CMS → Jayme Rock-Willoughby, D.O.
Nuclear Cardiology Physician in Monterey, 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 374 in Nuclear 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
2K
Medicare Part D claims · 326 beneficiaries · Nuclear Cardiology Physician avg: 4K
MIPS score
84/100
▲ 1 pts above national avg 83.5 · Above neutral
Industry payments
$320.91
4 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Jayme Rock-Willoughby, D.O. reported a CMS MIPS final score of 84/100 - above the 83.5 national average - and filed 1,994 Medicare Part D claims in 2023.
- 84/100
- MIPS score · +1 vs avg
- 2K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥42nd
- pct among measured MIPS (lower-bound band)
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.
Jayme Rock-Willoughby, D.O.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
84 ≥ 42nd percentile 42% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Jayme Rock-Willoughby, D.O. sits
This provider among nuclear cardiology physician peers
Across the 147 nuclear cardiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Jayme Rock-Willoughby, D.O. writes more Part D claims than 23% of them and scores higher on MIPS quality than 39% - 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 nuclear cardiology physician peer from a representative sample of 60; the gold marker is Jayme Rock-Willoughby, D.O.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Jayme Rock-Willoughby, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Jayme Rock-Willoughby, D.O.?
Near national averagePrimary specialty
Nuclear Cardiology Physician
Medicare Part D claims
1,994 50% vs specialty avg
MIPS final score
84/100 0.5 pts vs avg
Specialty distribution in California
How Nuclear Cardiology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Jayme Rock-Willoughby, D.O.'s 2023 MIPS final score plotted against the Nuclear Cardiology Physician national average
- MIPS Final Score
- 84/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Nuclear Cardiology Physician) - 84/100 vs national avg 83.5
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).
Jayme Rock-Willoughby, D.O. appears in the CMS NPPES registry as a Nuclear Cardiology Physician provider holding D.O. credentials at 30 GARDEN CT STE B, Monterey, CA, 93940, with a listed phone of (831) 647-1123. NPI 1598924573 was issued on 06/05/2008.
Medicare Part D records for calendar year 2023 show 1,994 prescription claims written by this provider, covering 326 Medicare beneficiaries and totaling roughly $332K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 84/100 for the 2023 performance year (Quality 83.1, Cost 63.6), compared with the 83.5 average among clinicians with a measured score.
Nuclear Cardiology Physician is a narrow specialty nationwide, with 374 enrolled providers across 37 states and an average of 4,019 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 | 1598924573 |
|---|---|
| Specialty | Nuclear Cardiology Physician |
| Credentials | D.O. |
| Gender | Female |
| NPI Issued | 06/05/2008 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.006
Final Score
Measured-score avg: 83.5
83.0673
Quality
63.6195
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Jayme Rock-Willoughby, D.O. 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.
Community Hospital OF The Monterey Peninsula
★★★★☆ 4/5
Monterey, CA
Acute Care Hospitals
CMS CCN: 050145
Montage Medical Group
Monterey, 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 Jayme Rock-Willoughby, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$321
Largest payer
Abbott Laboratories
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 Jayme Rock-Willoughby, D.O.. To verify Jayme Rock-Willoughby, D.O.'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.
1,994
Total Claims
$332K
Total Drug Cost
326
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,161
- Total Day Supply
- 153,612
- Generic Drug Cost
- $44K
Patient Demographics
- Average Patient Age
- 76.9 years
- Avg HCC Risk Score
- 1.50
- Gender Split
- 67% female / 33% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jayme Rock-Willoughby, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
200 claims
- Eliquis
Eliquis
167 claims
- Metoprolol Succinate
Metoprolol Succinate
162 claims
- Amlodipine Besylate
Amlodipine Besylate
152 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
108 claims
- Losartan Potassium
Losartan Potassium
106 claims
- Metoprolol Tartrate
Metoprolol Tartrate
95 claims
- Carvedilol
Carvedilol
80 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 200 |
| Eliquis Apixaban | 167 |
| Metoprolol Succinate | 162 |
| Amlodipine Besylate | 152 |
| Rosuvastatin Calcium | 108 |
| Losartan Potassium | 106 |
| Metoprolol Tartrate | 95 |
| Carvedilol | 80 |
| Lisinopril | 63 |
| Ezetimibe | 56 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nuclear Cardiology Physician Overview
How Jayme Rock-Willoughby, D.O. fits within the Nuclear Cardiology Physician landscape nationally.
374
Nuclear Cardiology Physician Providers in US
37
States with Nuclear Cardiology Physician
4,019
Avg Claims per Provider
Jayme Rock-Willoughby, D.O.'s 1,994 claims are below the specialty average of 4,019.
Nearby Nuclear Cardiology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Rock-Willoughby.
Dr. Riaz Ahmed
M.D.
Encinitas, CA
Dr. Siva Arunasalam
M D
Victorville, CA
Dr. Shadfar Bahri
M.D.
Los Angeles, CA
Dr. Leslie Baluyot
MD
Modesto, CA
Dr. Raye Bellinger
MD
Sacramento, CA
Compare Nuclear 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 Nuclear 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.
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Frequently Asked Questions
What is Jayme Rock-Willoughby, D.O.'s specialty? ▼
Jayme Rock-Willoughby, D.O. specializes in Nuclear Cardiology Physician and practices in Monterey, California. Credentials: D.O..
How much does Jayme Rock-Willoughby, D.O. prescribe under Medicare Part D? ▼
In 2023, Jayme Rock-Willoughby, D.O. wrote 1,994 Medicare Part D claims totaling $332K in drug costs for 326 beneficiaries.
What is Jayme Rock-Willoughby, D.O.'s Medicare quality score? ▼
Jayme Rock-Willoughby, D.O. has a CMS MIPS Final Score of 84/100 (Quality: 83.1, Cost: 63.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Jayme Rock-Willoughby, D.O. located? ▼
Jayme Rock-Willoughby, D.O. is located at 30 GARDEN CT STE B, Monterey, CA, 93940. Phone: (831) 647-1123.
What is Jayme Rock-Willoughby, D.O.'s NPI number? ▼
Jayme Rock-Willoughby, D.O.'s National Provider Identifier (NPI) is 1598924573, issued on 06/05/2008.
How many Nuclear Cardiology Physician providers are there in the US? ▼
There are 374 Nuclear Cardiology Physician providers across 37 states in the US. The average Nuclear Cardiology Physician provider writes 4,019 Medicare Part D claims per year.
What drugs does Jayme Rock-Willoughby, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Jayme Rock-Willoughby, D.O.'s most frequently prescribed drugs include Atorvastatin Calcium, Eliquis, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jayme Rock-Willoughby, D.O. accept Medicare? ▼
Jayme Rock-Willoughby, D.O. appears in CMS Medicare data with 1,994 Part D claims and 326 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jayme Rock-Willoughby, D.O.'s credentials? ▼
Jayme Rock-Willoughby, D.O.'s NPI is 1598924573 with credentials D.O.. 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.