2026 NPPES data Interventional Cardiology Physician NPI 1134169238 MD
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JAMES WALDER, MD

Interventional Cardiology Physician in RAPID CITY, South Dakota. 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
51
Medicare Part D claims · Interventional Cardiology Physician avg: 3K
What the federal data reveals: JAMES WALDER, MD is a Interventional Cardiology Physician ([object Object]) practicing in RAPID CITY, South Dakota with a Medicare Part D prescribing footprint of 51 claims .

What stands out: JAMES WALDER, MD filed 51 Medicare Part D claims in 2023 across RAPID CITY, South Dakota. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

JAMES WALDER, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

JAMES WALDER, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/07/2006

NPI 1134169238

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

51 98% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

Specialty distribution in South Dakota

How Interventional Cardiology Physician compares to other specialties among South Dakota providers

South Dakota providers

Interventional Cardiology Physician share within South Dakota

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

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).

JAMES WALDER, MD is a Interventional Cardiology Physician provider practicing in RAPID CITY, South Dakota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1134169238. 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.

JAMES WALDER, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 4150 FIFTH STREET, RAPID CITY, SD, 57701, with a listed phone of (605) 399-4300. NPI 1134169238 was issued on 06/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALDER 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 51 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $9K in drug spend. 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

4150 FIFTH STREET
RAPID CITY, SD 57701

Provider Details

NPI 1134169238
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 06/07/2006

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

51
Total Claims
$9K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
99
Total Day Supply
2,675
Generic Drug Cost
$847

Patient Demographics

Average Patient Age
78.0 years
Avg HCC Risk Score
1.41

Interventional Cardiology Physician Overview

How JAMES WALDER, 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

JAMES WALDER, MD's 51 claims are below the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in South Dakota

Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as WALDER.

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

Frequently Asked Questions

What is JAMES WALDER, MD's specialty?
JAMES WALDER, MD specializes in Interventional Cardiology Physician and practices in RAPID CITY, South Dakota. Credentials: MD.
How much does JAMES WALDER, MD prescribe under Medicare Part D?
In 2023, JAMES WALDER, MD wrote 51 Medicare Part D claims totaling $9K in drug costs for N/A beneficiaries.
Where is JAMES WALDER, MD located?
JAMES WALDER, MD is located at 4150 FIFTH STREET, RAPID CITY, SD, 57701. Phone: (605) 399-4300.
What is JAMES WALDER, MD's NPI number?
JAMES WALDER, MD's National Provider Identifier (NPI) is 1134169238, issued on 06/07/2006.
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.
Does JAMES WALDER, MD accept Medicare?
JAMES WALDER, MD appears in CMS Medicare data with 51 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES WALDER, MD's credentials?
JAMES WALDER, MD's NPI is 1134169238 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.
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