2026 NPPES data Internal Medicine Physician NPI 1740404920 MD
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STEPHEN KNAUS, MD

Internal Medicine Physician in INDIANAPOLIS, Indiana. 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
2K
Medicare Part D claims · 173 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

STEPHEN KNAUS, MD filed 2,208 Medicare Part D claims in 2023 as a Internal Medicine Physician in INDIANAPOLIS, Indiana, prescribing 83% generic.

2K
Part D claims, 2023
83%
generic prescribing
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.

STEPHEN KNAUS, MD's Medicare Part D volume vs every U.S. prescriber

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

2,208 Top 15% higher than 85% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 certification likely (heuristic — not verified)

STEPHEN KNAUS, MD 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).

What does the federal data show about STEPHEN KNAUS, MD?

Quality data not reported

NPI registry status

Active

Issued 04/12/2007

NPI 1740404920

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

2,208 19% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Indiana

How Internal Medicine Physician compares to other specialties among Indiana providers

Indiana providers

Internal Medicine Physician share within Indiana

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

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).

STEPHEN KNAUS, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 2001 W 86TH ST, INDIANAPOLIS, IN, 46260, with a listed phone of (317) 338-2345. NPI 1740404920 was issued on 04/12/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KNAUS 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 2,208 prescription claims written by this provider, covering 173 Medicare beneficiaries and totaling roughly $415K in drug spend, split 17% brand-name and 83% generic by claim count, with an opioid prescribing rate of 2.4%. 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

2001 W 86TH ST
INDIANAPOLIS, IN 46260

Provider Details

NPI 1740404920
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 04/12/2007

Hospital and facility affiliations

Facilities where STEPHEN KNAUS, 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.

ST VINCENT MEDICAL GROUP INC
INDIANAPOLIS, IN
ST VINCENT PHYSICIAN SERVICES HOSPITAL AND HEALTH CARE CENTER
INDIANAPOLIS, IN

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

STEPHEN KNAUS, MD — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 2,208 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.

2,208
Total Claims
$415K
Total Drug Cost
173
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,324
Total Day Supply
156,680
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$372K
Generic Drug Cost
$41K
Opioid Claims
53 (2.4% rate)
Antibiotic Claims
18

Patient Demographics

Average Patient Age
72.7 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 STEPHEN KNAUS, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
219
Amlodipine Besylate
126
Lisinopril
71
Tamsulosin Hcl
71
Rosuvastatin Calcium
59
Omeprazole
58
Metoprolol Succinate
57
Trulicity
Dulaglutide
54
Metformin Hcl Er
Metformin Hcl
51
Levothyroxine Sodium
50

* 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 STEPHEN KNAUS, 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

STEPHEN KNAUS, MD's 2,208 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Indiana

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

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

Frequently Asked Questions

What is STEPHEN KNAUS, MD's specialty?
STEPHEN KNAUS, MD specializes in Internal Medicine Physician and practices in INDIANAPOLIS, Indiana. Credentials: MD.
How much does STEPHEN KNAUS, MD prescribe under Medicare Part D?
In 2023, STEPHEN KNAUS, MD wrote 2,208 Medicare Part D claims totaling $415K in drug costs for 173 beneficiaries.
Where is STEPHEN KNAUS, MD located?
STEPHEN KNAUS, MD is located at 2001 W 86TH ST, INDIANAPOLIS, IN, 46260. Phone: (317) 338-2345.
What is STEPHEN KNAUS, MD's NPI number?
STEPHEN KNAUS, MD's National Provider Identifier (NPI) is 1740404920, issued on 04/12/2007.
Does STEPHEN KNAUS, MD prescribe more brand-name or generic drugs?
STEPHEN KNAUS, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $372K in brand drug costs.
Does STEPHEN KNAUS, MD prescribe opioids?
Yes, STEPHEN KNAUS, MD had 53 opioid claims in 2023 with an opioid prescribing rate of 2.4%.
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 STEPHEN KNAUS, MD prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN KNAUS, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN KNAUS, MD accept Medicare?
STEPHEN KNAUS, MD appears in CMS Medicare data with 2,208 Part D claims and 173 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN KNAUS, MD's credentials?
STEPHEN KNAUS, MD's NPI is 1740404920 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