NPI registry status
Active
2026 NPPES data Colon & Rectal Surgery Physician NPI 1013950690 MD
Verify on CMS → David Ondrula, MD
Colon & Rectal Surgery Physician in Barrington, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,642 in Colon & Rectal Surgery Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
283
Medicare Part D claims · 102 beneficiaries · Colon & Rectal Surgery Physician avg: 210
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$10.8K
15 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
David Ondrula, MD filed 283 Medicare Part D claims in 2024 as a Colon & Rectal Surgery Physician in Barrington, Illinois, prescribing 85% generic.
- 283
- Part D claims, 2024
- 85%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥48th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about David Ondrula, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1013950690), first enumerated 06/13/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 283 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$10.8K in reported industry payments (15 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not David Ondrula, MD's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1013950690 · Colon & Rectal Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1013950690
- ENUM-LEGACY 2006
- TAX-NARROW 1,642
- RX-LIGHT 283
- BOOK-THIN 67 in Illinois
- PHOTO-ENUM Charles Whitlow · 2006
David Ondrula, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
283 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
David Ondrula, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 David Ondrula, MD?
Quality data not reportedPrimary specialty
Colon & Rectal Surgery Physician
Medicare Part D claims
283 35% vs specialty avg
Specialty distribution in Illinois
How Colon & Rectal Surgery Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Colon & Rectal Surgery Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1013950690 |
|---|---|
| Specialty | Colon & Rectal Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/13/2006 |
Hospital and facility affiliations
Facilities where David Ondrula, 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.
Advanced Surgical Care OF Northern Illinois, Ltd
Barrington, IL
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 David Ondrula, MD. Source: openpaymentsdata.cms.gov.
Total received
$10.8K
Largest payer
INTUITIVE SURGICAL, 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.
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to David Ondrula, MD. To verify David Ondrula, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
David Ondrula, MD - brand share 15.0%
Colon & Rectal Surgery Physician average
15% brand-name claims vs 85% generic, on 283 2024 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 2024.
283
Total Claims
$8K
Total Drug Cost
102
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 295
- Total Day Supply
- 1,242
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $3K
- Generic Drug Cost
- $5K
- Opioid Claims
- 29 (10.2% rate)
- Antibiotic Claims
- 80
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 1.00
- Gender Split
- 47% female / 53% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What David Ondrula, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Sod Sulf-Potass Su…
Sod Sulf-Potass Sulf-Mag Sulf
80 claims
- Ondansetron Odt
Ondansetron Odt
68 claims
- Metronidazole
Metronidazole
34 claims
- Neomycin Sulfate 29
Neomycin Sulfate
29 claims
- Tramadol Hcl 25
Tramadol Hcl
25 claims
| Drug | Claims |
|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 80 |
| Ondansetron Odt Ondansetron | 68 |
| Metronidazole | 34 |
| Neomycin Sulfate | 29 |
| Tramadol Hcl | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Colon & Rectal Surgery Physician Overview
How David Ondrula, MD fits within the Colon & Rectal Surgery Physician landscape nationally.
1,642
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
210
Avg Claims per Provider
David Ondrula, MD's 283 claims are above the specialty average of 210.
Nationwide Colon & Rectal Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ondrula, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Colon & Rectal Surgery Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Ondrula.
One of 67 Colon & Rectal Surgery Physician providers enrolled in Illinois, 5 are shown here.
Herand Abcarian
Chicago, IL
Dr. Kishore Alapati
MD
Moline, IL
Dr. Saeed Albalawi
MD
Chicago, IL
Dr. John Andrews
M.D.
Lake Forest, IL
Dr. Elinor Benshabat
MD
Park Ridge, IL
Compare Colon & Rectal Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is David Ondrula, MD's specialty? ▼
David Ondrula, MD specializes in Colon & Rectal Surgery Physician and practices in Barrington, Illinois. Credentials: MD.
How much does David Ondrula, MD prescribe under Medicare Part D? ▼
In 2024, David Ondrula, MD wrote 283 Medicare Part D claims totaling $8K in drug costs for 102 beneficiaries.
Where is David Ondrula, MD located? ▼
David Ondrula, MD is located at 802 FOX GLN, Barrington, IL, 60010. Phone: (847) 381-8161.
What is David Ondrula, MD's NPI number? ▼
David Ondrula, MD's National Provider Identifier (NPI) is 1013950690, issued on 06/13/2006.
Does David Ondrula, MD prescribe more brand-name or generic drugs? ▼
David Ondrula, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $3K in brand drug costs.
Does David Ondrula, MD prescribe opioids? ▼
Yes, David Ondrula, MD had 29 opioid claims in 2024 with an opioid prescribing rate of 10.2%.
How many Colon & Rectal Surgery Physician providers are there in the US? ▼
There are 1,642 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 210 Medicare Part D claims per year.
What drugs does David Ondrula, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, David Ondrula, MD's most frequently prescribed drugs include Sod Sulf-Potass Sulf-Mag Sulf, Ondansetron Odt, Metronidazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Ondrula, MD accept Medicare? ▼
David Ondrula, MD appears in CMS Medicare data with 283 Part D claims and 102 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Ondrula, MD's credentials? ▼
David Ondrula, MD's NPI is 1013950690 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.