2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1942272554 MD
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ROBERT SOURK, MD

Sleep Medicine (Internal Medicine) Physician in HUTCHINSON, Kansas. 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 · 332 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
38%
generic claims · 62% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ROBERT SOURK, MD filed 1,586 Medicare Part D claims in 2023 as a Sleep Medicine (Internal Medicine) Physician in HUTCHINSON, Kansas, prescribing 38% generic.

2K
Part D claims, 2023
38%
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.

ROBERT SOURK, MD's Medicare Part D volume vs every U.S. prescriber

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

1,586 Top 19% higher than 81% 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%). This entry sits in this band. 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 certification likely (heuristic — not verified)

ROBERT SOURK, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 5 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 ROBERT SOURK, MD?

Quality data not reported

NPI registry status

Active

Issued 02/07/2006

NPI 1942272554

Primary specialty

Sleep Medicine (Internal Medicine) Physician

Niche

857 US NPIs in this specialty

Medicare Part D claims

1,586 21% vs specialty avg

2023 prescription claims

Specialty avg: 1,310

Specialty distribution in Kansas

How Sleep Medicine (Internal Medicine) Physician compares to other specialties among Kansas providers

Kansas providers

Sleep Medicine (Internal Medicine) Physician share within Kansas

1. Sleep Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Sleep Medicine (Internal Medicine) Physician share within Kansas

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Sleep Medicine (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).

ROBERT SOURK, MD appears in the CMS NPPES registry as a Sleep Medicine (Internal Medicine) Physician provider holding MD credentials at 2101 N WALDRON ST, HUTCHINSON, KS, 67502, with a listed phone of (620) 669-2500. NPI 1942272554 was issued on 02/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SOURK 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 1,586 prescription claims written by this provider, covering 332 Medicare beneficiaries and totaling roughly $543K in drug spend, split 62% brand-name and 38% 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.

Sleep Medicine (Internal Medicine) Physician is a narrow specialty nationwide, with 857 enrolled providers across 52 states and an average of 1,310 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

2101 N WALDRON ST
HUTCHINSON, KS 67502

Provider Details

NPI 1942272554
Specialty Sleep Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 02/07/2006

Hospital and facility affiliations

Facilities where ROBERT SOURK, 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.

ELLSWORTH COUNTY MEDICAL CENTER
★★☆☆☆ 2/5
ELLSWORTH, KS
Critical Access Hospitals
CMS CCN: 171327
ASCENSION VIA CHRISTI HOSPITAL MANHATTAN INC
MANHATTAN, KS
CLOUD COUNTY HEALTH CENTER INC
CONCORDIA, KS
HUTCHINSON CLINIC PA INC
HUTCHINSON, KS
SALINA REGIONAL HEALTH CENTER INC
SALINA, KS

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 · Brand-heavy

ROBERT SOURK, MD — brand share 62.0%
Specialty average (est.)

62% brand-name claims vs 38% generic, on 1,586 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.

1,586
Total Claims
$543K
Total Drug Cost
332
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,005
Total Day Supply
56,073
Brand vs Generic
62% brand / 38% generic
Brand Drug Cost
$521K
Antibiotic Claims
68

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.67
Gender Split
57% female / 43% male
Age Distribution
<65: 53, 65-74: 155, 75-84: 98, 85+: 26

Top Prescribed Drugs (Medicare Part D)

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

What ROBERT SOURK, 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
Albuterol Sulfate Hfa
Albuterol Sulfate
205
Symbicort
Budesonide/Formoterol Fumarate
158
Montelukast Sodium
140
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
96
Breo Ellipta
Fluticasone/Vilanterol
90
Spiriva Respimat
Tiotropium Bromide
75
Azithromycin
68
Ventolin Hfa
Albuterol Sulfate
61
Advair Diskus
Fluticasone Propion/Salmeterol
60
Ropinirole Hcl
44

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

Sleep Medicine (Internal Medicine) Physician Overview

How ROBERT SOURK, MD fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.

857
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,310
Avg Claims per Provider

ROBERT SOURK, MD's 1,586 claims are above the specialty average of 1,310.

Nearby Sleep Medicine (Internal Medicine) Physician Providers in Kansas

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

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

Frequently Asked Questions

What is ROBERT SOURK, MD's specialty?
ROBERT SOURK, MD specializes in Sleep Medicine (Internal Medicine) Physician and practices in HUTCHINSON, Kansas. Credentials: MD.
How much does ROBERT SOURK, MD prescribe under Medicare Part D?
In 2023, ROBERT SOURK, MD wrote 1,586 Medicare Part D claims totaling $543K in drug costs for 332 beneficiaries.
Where is ROBERT SOURK, MD located?
ROBERT SOURK, MD is located at 2101 N WALDRON ST, HUTCHINSON, KS, 67502. Phone: (620) 669-2500.
What is ROBERT SOURK, MD's NPI number?
ROBERT SOURK, MD's National Provider Identifier (NPI) is 1942272554, issued on 02/07/2006.
Does ROBERT SOURK, MD prescribe more brand-name or generic drugs?
ROBERT SOURK, MD's prescribing is 62% brand-name and 38% generic drugs by claim count, with $521K in brand drug costs.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US?
There are 857 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,310 Medicare Part D claims per year.
What drugs does ROBERT SOURK, MD prescribe most often?
Based on 2023 Medicare Part D data, ROBERT SOURK, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Symbicort, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT SOURK, MD accept Medicare?
ROBERT SOURK, MD appears in CMS Medicare data with 1,586 Part D claims and 332 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT SOURK, MD's credentials?
ROBERT SOURK, MD's NPI is 1942272554 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