2026 NPPES data Internal Medicine Physician NPI 1750386538 MD
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JAMES FELTES, MD

Internal Medicine Physician in VIROQUA, Wisconsin. 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
238
Medicare Part D claims · 12 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JAMES FELTES, MD filed 238 Medicare Part D claims in 2023 as a Internal Medicine Physician in VIROQUA, Wisconsin, prescribing 80% generic.

238
Part D claims, 2023
80%
generic prescribing

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.

JAMES FELTES, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

238 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

JAMES FELTES, 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).

What does the federal data show about JAMES FELTES, MD?

Quality data not reported

NPI registry status

Active

Issued 06/17/2005

NPI 1750386538

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

238 91% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Wisconsin

How Internal Medicine Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Internal Medicine Physician share within Wisconsin

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Wisconsin

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

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

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine 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 FELTES, MD is a Internal Medicine Physician provider practicing in VIROQUA, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1750386538. 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 FELTES, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 407 S MAIN ST, VIROQUA, WI, 54665, with a listed phone of (608) 637-3195. NPI 1750386538 was issued on 06/17/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FELTES 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 238 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $14K in drug spend, split 20% brand-name and 80% 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

407 S MAIN ST
VIROQUA, WI 54665

Provider Details

NPI 1750386538
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 06/17/2005

Brand vs generic prescribing mix · Typical

JAMES FELTES, MD — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 238 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.

238
Total Claims
$14K
Total Drug Cost
12
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
244
Total Day Supply
4,265
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$11K
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
79.7 years
Avg HCC Risk Score
2.95
Age Distribution
<65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Furosemide
44
Omeprazole
35
Ibuprofen
31
Eliquis
Apixaban
26
Metoprolol Succinate
13
Finasteride
11
Isosorbide Mononitrate Er
Isosorbide Mononitrate
11
Tamsulosin Hcl
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How JAMES FELTES, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

JAMES FELTES, MD's 238 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Wisconsin

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JAMES FELTES, MD's specialty?
JAMES FELTES, MD specializes in Internal Medicine Physician and practices in VIROQUA, Wisconsin. Credentials: MD.
How much does JAMES FELTES, MD prescribe under Medicare Part D?
In 2023, JAMES FELTES, MD wrote 238 Medicare Part D claims totaling $14K in drug costs for 12 beneficiaries.
Where is JAMES FELTES, MD located?
JAMES FELTES, MD is located at 407 S MAIN ST, VIROQUA, WI, 54665. Phone: (608) 637-3195.
What is JAMES FELTES, MD's NPI number?
JAMES FELTES, MD's National Provider Identifier (NPI) is 1750386538, issued on 06/17/2005.
Does JAMES FELTES, MD prescribe more brand-name or generic drugs?
JAMES FELTES, MD's prescribing is 20% brand-name and 80% generic drugs by claim count, with $11K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does JAMES FELTES, MD prescribe most often?
Based on 2023 Medicare Part D data, JAMES FELTES, MD's most frequently prescribed drugs include Furosemide, Omeprazole, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAMES FELTES, MD accept Medicare?
JAMES FELTES, MD appears in CMS Medicare data with 238 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES FELTES, MD's credentials?
JAMES FELTES, MD's NPI is 1750386538 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