2026 NPPES data Interventional Cardiology Physician NPI 1619977188 MD
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DAVID STEWART, MD

Interventional Cardiology Physician in GERMANTOWN, Tennessee. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
6K
Medicare Part D claims · 613 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]
What the federal data reveals: DAVID STEWART, MD is a Interventional Cardiology Physician ([object Object]) practicing in GERMANTOWN, Tennessee with a Medicare Part D prescribing footprint of 6K claims across 613 beneficiaries — 19% brand-name prescribing . Their CMS MIPS Final Score of 75/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: DAVID STEWART, MD reported a CMS MIPS final score of 75 out of 100, below the 83.1 national average, and filed 5,516 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DAVID STEWART, MD 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).

DAVID STEWART, MD at a glance

Below national average

NPI registry status

Active

Issued 07/27/2005

NPI 1619977188

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

5,516 85% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Tennessee

How Interventional Cardiology Physician compares to other specialties among Tennessee providers

Tennessee providers

Interventional Cardiology Physician share within Tennessee

1. Interventional Cardiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Cardiology Physician share within Tennessee

Medicare quality performance — MIPS

DAVID STEWART, MD's 2023 MIPS final score plotted against the Interventional Cardiology Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Interventional Cardiology Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Interventional Cardiology Physician) — 75/100 vs national avg 83.1

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).

DAVID STEWART, MD is a Interventional Cardiology Physician provider practicing in GERMANTOWN, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1619977188. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

DAVID STEWART, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 7460 WOLF RIVER BOULEVARD, GERMANTOWN, TN, 38138, with a listed phone of (901) 763-0200. NPI 1619977188 was issued on 07/27/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what STEWART most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 5,516 prescription claims written by this provider, covering 613 Medicare beneficiaries and totaling roughly $872K in drug spend, split 19% brand-name and 81% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 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

7460 WOLF RIVER BOULEVARD
GERMANTOWN, TN 38138

Provider Details

NPI 1619977188
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 07/27/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

75
Final Score
Avg: 83.1

Reporting: Individual

Hospital and facility affiliations

Facilities where DAVID STEWART, 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.

SPECIALTY PHYSICIAN GROUP LLC
OLIVE BRANCH, MS

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

DAVID STEWART, MD — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 5,516 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.

5,516
Total Claims
$872K
Total Drug Cost
613
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,287
Total Day Supply
366,131
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$794K
Generic Drug Cost
$78K

Patient Demographics

Average Patient Age
75.1 years
Avg HCC Risk Score
1.35
Gender Split
50% female / 50% male
Age Distribution
<65: 44, 65-74: 256, 75-84: 220, 85+: 93

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Carvedilol
406
Atorvastatin Calcium
391
Amlodipine Besylate
366
Metoprolol Tartrate
349
Rosuvastatin Calcium
339
Eliquis
Apixaban
319
Losartan Potassium
282
Entresto
Sacubitril/Valsartan
245
Metoprolol Succinate
219
Clopidogrel
Clopidogrel Bisulfate
202

* 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 DAVID STEWART, MD fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

DAVID STEWART, MD's 5,516 claims are above the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in Tennessee

Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as STEWART.

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DAVID STEWART, MD's specialty?
DAVID STEWART, MD specializes in Interventional Cardiology Physician and practices in GERMANTOWN, Tennessee. Credentials: MD.
How much does DAVID STEWART, MD prescribe under Medicare Part D?
In 2023, DAVID STEWART, MD wrote 5,516 Medicare Part D claims totaling $872K in drug costs for 613 beneficiaries.
What is DAVID STEWART, MD's Medicare quality score?
DAVID STEWART, MD has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DAVID STEWART, MD located?
DAVID STEWART, MD is located at 7460 WOLF RIVER BOULEVARD, GERMANTOWN, TN, 38138. Phone: (901) 763-0200.
What is DAVID STEWART, MD's NPI number?
DAVID STEWART, MD's National Provider Identifier (NPI) is 1619977188, issued on 07/27/2005.
Does DAVID STEWART, MD prescribe more brand-name or generic drugs?
DAVID STEWART, MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $794K in brand drug costs.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 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 DAVID STEWART, MD prescribe most often?
Based on 2023 Medicare Part D data, DAVID STEWART, MD's most frequently prescribed drugs include Carvedilol, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID STEWART, MD accept Medicare?
DAVID STEWART, MD appears in CMS Medicare data with 5,516 Part D claims and 613 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID STEWART, MD's credentials?
DAVID STEWART, MD's NPI is 1619977188 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

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