NPI registry status
Active
2026 NPPES data Interventional Cardiology Physician NPI 1184676413 MD
Verify on CMS → John Marshall, MD
Interventional Cardiology Physician in Atlanta, Georgia.
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
2K
Medicare Part D claims · 321 beneficiaries · Interventional Cardiology Physician avg: 3K
MIPS score
68.6/100
▼ 15 pts below national avg 83.1 · Mid-tier
Industry payments
$1.2K
28 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Marshall, MD reported a CMS MIPS final score of 68.6/100 - below the 83.1 national average - and filed 2,161 Medicare Part D claims in 2023.
- 68.6/100
- MIPS score · -15 vs avg
- 2K
- 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.
John Marshall, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
69 7th percentile higher than 7% 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 Marshall, 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, John Marshall, MD writes more Part D claims than 41% of them and scores higher on MIPS quality than 7% - 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 interventional cardiology physician peer from a representative sample of 60; the gold marker is John Marshall, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
John Marshall, MD 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 John Marshall, MD?
Below national averagePrimary specialty
Interventional Cardiology Physician
Medicare Part D claims
2,161 28% vs specialty avg
MIPS final score
68.6/100 14.5 pts vs avg
Specialty distribution in Georgia
How Interventional Cardiology Physician compares to other specialties among Georgia providers
Medicare quality performance, MIPS
John Marshall, MD's 2023 MIPS final score plotted against the Interventional Cardiology Physician national average
- MIPS Final Score
- 68.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Interventional Cardiology Physician) - 68.6/100 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 Marshall, MD appears in the CMS NPPES registry as an Interventional Cardiology Physician provider holding MD credentials at 1110 W PEACHTREE ST NW STE 920, Atlanta, GA, 30309, with a listed phone of (404) 962-6000. NPI 1184676413 was issued on 05/16/2006.
Medicare Part D records for calendar year 2023 show 2,161 prescription claims written by this provider, covering 321 Medicare beneficiaries and totaling roughly $394K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 68.6/100 for the 2023 performance year (Quality 63.2, Cost 52), 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 | 1184676413 |
|---|---|
| Specialty | Interventional Cardiology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/16/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
68.5568
Final Score
Avg: 83.1
63.1547
Quality
52.0348
Cost
76
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where John Marshall, 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.
Northside Cardiovascular Professional Services, LLC
Sandy Springs, GA
Stephens County Hospital Physician Group LLC
Toccoa, GA
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 Marshall, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.2K
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,161
Total Claims
$394K
Total Drug Cost
321
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,816
- Total Day Supply
- 143,934
- Generic Drug Cost
- $28K
Patient Demographics
- Average Patient Age
- 75.9 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 45% female / 55% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Marshall, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
195 claims
- Metoprolol Tartrate
Metoprolol Tartrate
169 claims
- Metoprolol Succinate
Metoprolol Succinate
165 claims
- Amlodipine Besylate
Amlodipine Besylate
139 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
134 claims
- Losartan Potassium
Losartan Potassium
117 claims
- Atorvastatin Calcium
Atorvastatin Calcium
115 claims
- Furosemide
Furosemide
93 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 195 |
| Metoprolol Tartrate | 169 |
| Metoprolol Succinate | 165 |
| Amlodipine Besylate | 139 |
| Rosuvastatin Calcium | 134 |
| Losartan Potassium | 117 |
| Atorvastatin Calcium | 115 |
| Furosemide | 93 |
| Carvedilol | 77 |
| Clopidogrel Clopidogrel Bisulfate | 76 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Interventional Cardiology Physician Overview
How John Marshall, 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
John Marshall, MD's 2,161 claims are below the specialty average of 2,984.
Nearby Interventional Cardiology Physician Providers in Georgia
Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as Marshall.
Dr. Raza Abbas
M.D.
Gainesville, GA
Dr. Selwin Abraham
M.D.
Dalton, GA
Dr. Ahsan Achtchi
D.O.
Dalton, GA
Dr. David Allen
MD
Atlanta, GA
Dr. Zakaria Almuwaqqat
M.D
Tucker, GA
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 Georgia 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.
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Frequently Asked Questions
What is John Marshall, MD's specialty? ▼
John Marshall, MD specializes in Interventional Cardiology Physician and practices in Atlanta, Georgia. Credentials: MD.
How much does John Marshall, MD prescribe under Medicare Part D? ▼
In 2023, John Marshall, MD wrote 2,161 Medicare Part D claims totaling $394K in drug costs for 321 beneficiaries.
What is John Marshall, MD's Medicare quality score? ▼
John Marshall, MD has a CMS MIPS Final Score of 68.6/100 (Quality: 63.2, Cost: 52). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is John Marshall, MD located? ▼
John Marshall, MD is located at 1110 W PEACHTREE ST NW STE 920, Atlanta, GA, 30309. Phone: (404) 962-6000.
What is John Marshall, MD's NPI number? ▼
John Marshall, MD's National Provider Identifier (NPI) is 1184676413, issued on 05/16/2006.
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 John Marshall, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, John Marshall, MD's most frequently prescribed drugs include Eliquis, Metoprolol Tartrate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Marshall, MD accept Medicare? ▼
John Marshall, MD appears in CMS Medicare data with 2,161 Part D claims and 321 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Marshall, MD's credentials? ▼
John Marshall, MD's NPI is 1184676413 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.