2026 NPPES data Interventional Cardiology Physician NPI 1457705501
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MCCALL WALKER

Interventional Cardiology Physician in GRAY, Louisiana. 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
94
Medicare Part D claims · 38 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$8.1K
59 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: MCCALL WALKER is a Interventional Cardiology Physician ([object Object]) practicing in GRAY, Louisiana with a Medicare Part D prescribing footprint of 94 claims across 38 beneficiaries — 13% brand-name prescribing . Industry payments of $8.1K across 59 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: MCCALL WALKER filed 94 Medicare Part D claims in 2023 across GRAY, Louisiana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MCCALL WALKER practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

MCCALL WALKER at a glance

Quality data not reported

NPI registry status

Active

Issued 04/14/2016

NPI 1457705501

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

94 97% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

Specialty distribution in Louisiana

How Interventional Cardiology Physician compares to other specialties among Louisiana providers

Louisiana providers

Interventional Cardiology Physician share within Louisiana

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

Specialty board-certification context

Estimated specialty board-certified rate — Interventional Cardiology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Interventional Cardiology Physician ABMS/AOA estimate

Est. board-certified rate (Interventional Cardiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Interventional Cardiology Physician) — ABMS / AOA estimate

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).

MCCALL WALKER is a Interventional Cardiology Physician provider practicing in GRAY, Louisiana, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1457705501. 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.

MCCALL WALKER appears in the CMS NPPES registry as a Interventional Cardiology Physician provider at 191 INNOVATION CT STE A, GRAY, LA, 70359, with a listed phone of (985) 303-4100. NPI 1457705501 was issued on 04/14/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALKER 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 94 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $4K in drug spend, split 13% brand-name and 87% 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.

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

191 INNOVATION CT STE A
GRAY, LA 70359

Provider Details

NPI 1457705501
Specialty Interventional Cardiology Physician
Gender Male
NPI Issued 04/14/2016

Hospital and facility affiliations

Facilities where MCCALL WALKER 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.

CARDIOVASCULAR INSTITUTE OF THE SOUTH, LLC
GRAY, LA
PHYSICIAN PRACTICE PARTNERS
HOUMA, LA

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 MCCALL WALKER. Source: openpaymentsdata.cms.gov.

Total received

$8.1K

Largest payer

AngioDynamics, 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.

Brand vs generic prescribing mix · Typical

MCCALL WALKER — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 94 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.

94
Total Claims
$4K
Total Drug Cost
38
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
176
Total Day Supply
5,092
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$3K
Generic Drug Cost
$932

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
2.64
Gender Split
32% female / 68% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Clopidogrel
Clopidogrel Bisulfate
23

* 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 MCCALL WALKER 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

MCCALL WALKER's 94 claims are below the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in Louisiana

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

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

Frequently Asked Questions

What is MCCALL WALKER's specialty?
MCCALL WALKER specializes in Interventional Cardiology Physician and practices in GRAY, Louisiana.
How much does MCCALL WALKER prescribe under Medicare Part D?
In 2023, MCCALL WALKER wrote 94 Medicare Part D claims totaling $4K in drug costs for 38 beneficiaries.
Where is MCCALL WALKER located?
MCCALL WALKER is located at 191 INNOVATION CT STE A, GRAY, LA, 70359. Phone: (985) 303-4100.
What is MCCALL WALKER's NPI number?
MCCALL WALKER's National Provider Identifier (NPI) is 1457705501, issued on 04/14/2016.
Does MCCALL WALKER prescribe more brand-name or generic drugs?
MCCALL WALKER's prescribing is 13% brand-name and 87% generic drugs by claim count, with $3K 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 MCCALL WALKER prescribe most often?
Based on 2023 Medicare Part D data, MCCALL WALKER's most frequently prescribed drugs include Clopidogrel. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MCCALL WALKER accept Medicare?
MCCALL WALKER appears in CMS Medicare data with 94 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MCCALL WALKER's credentials?
MCCALL WALKER's NPI is 1457705501. 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.
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