NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1457304156 M.D.
Verify on CMS → Mark Wargo, M.D.
Family Medicine Physician in Streator, 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 147,760 in Family Medicine 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
17K
Medicare Part D claims · 1K beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mark Wargo, M.D. filed 16,926 Medicare Part D claims in 2023 as a Family Medicine Physician in Streator, Illinois, prescribing 85% generic.
- 17K
- Part D claims, 2023
- 85%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥98th
- 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 Mark Wargo, M.D.
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 1457304156), first enumerated 05/17/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 16,926 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
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Mark Wargo, M.D.'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 1457304156 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-HEAVY · BOOK-MID · PHOTO-ENUM
- NPI-10 1457304156
- ENUM-LEGACY 2006
- TAX-MEGA 148K Family Medicine
- RX-HEAVY 17K claims
- BOOK-MID 5,817 in Illinois
- PHOTO-ENUM Samuel Johnson · 2006
Mark Wargo, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
16,926 ≥ 98th percentile 98% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Mark Wargo, M.D. 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 Mark Wargo, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
16,926 395% vs specialty avg
Specialty distribution in Illinois
How Family Medicine 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 Family Medicine 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 | 1457304156 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/17/2006 |
Hospital and facility affiliations
Facilities where Mark Wargo, M.D. 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.
Saint James Hospital
★★★★☆ 4/5
Streator, IL
Acute Care Hospitals
CMS CCN: 140161
Osf Multi-Specialty Group
Streator, 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).
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 Mark Wargo, M.D.. To verify Mark Wargo, M.D.'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
Mark Wargo, M.D. - brand share 14.0%
Family Medicine Physician average
14% brand-name claims vs 85% generic, on 16,926 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.
16,926
Total Claims
$1.5M
Total Drug Cost
1,054
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 33,498
- Total Day Supply
- 950,198
- Brand vs Generic
- 14% brand / 85% generic
- Brand Drug Cost
- $1.2M
- Generic Drug Cost
- $277K
- Opioid Claims
- 701 (4.1% rate)
- Antibiotic Claims
- 242
Patient Demographics
- Average Patient Age
- 73.6 years
- Avg HCC Risk Score
- 1.36
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 140, 65-74: 438, 75-84: 308, 85+: 168
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mark Wargo, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
741 claims
- Levothyroxine Sodium
Levothyroxine Sodium
706 claims
- Amlodipine Besylate
Amlodipine Besylate
670 claims
- Warfarin Sodium
Warfarin Sodium
583 claims
- Gabapentin
Gabapentin
543 claims
- Metformin Hcl
Metformin Hcl
518 claims
- Metoprolol Succinate
Metoprolol Succinate
460 claims
- Potassium Chloride
Potassium Chloride
416 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 741 |
| Levothyroxine Sodium | 706 |
| Amlodipine Besylate | 670 |
| Warfarin Sodium | 583 |
| Gabapentin | 543 |
| Metformin Hcl | 518 |
| Metoprolol Succinate | 460 |
| Potassium Chloride | 416 |
| Lisinopril | 414 |
| Furosemide | 405 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Mark Wargo, M.D. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Mark Wargo, M.D.'s 16,926 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Wargo, 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 Family Medicine Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Wargo.
One of 5,817 Family Medicine Physician providers enrolled in Illinois, 5 are shown here.
Dr. Jon Aagaard
MD
Wheaton, IL
Dr. Napoleon Abando
MD
Woodstock, IL
Dr. Nikka Abaricia
MD
Chicago, IL
Mohemmed Abbas
Chicago, IL
Muhammad Abbas
Alton, IL
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Wargo, M.D.'s specialty? ▼
Mark Wargo, M.D. specializes in Family Medicine Physician and practices in Streator, Illinois. Credentials: M.D..
How much does Mark Wargo, M.D. prescribe under Medicare Part D? ▼
In 2023, Mark Wargo, M.D. wrote 16,926 Medicare Part D claims totaling $1.5M in drug costs for 1,054 beneficiaries.
Where is Mark Wargo, M.D. located? ▼
Mark Wargo, M.D. is located at 109 E ELM ST, Streator, IL, 61364. Phone: (815) 672-4587.
What is Mark Wargo, M.D.'s NPI number? ▼
Mark Wargo, M.D.'s National Provider Identifier (NPI) is 1457304156, issued on 05/17/2006.
Does Mark Wargo, M.D. prescribe more brand-name or generic drugs? ▼
Mark Wargo, M.D.'s prescribing is 14% brand-name and 85% generic drugs by claim count, with $1.2M in brand drug costs.
Does Mark Wargo, M.D. prescribe opioids? ▼
Yes, Mark Wargo, M.D. had 701 opioid claims in 2023 with an opioid prescribing rate of 4.1%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Mark Wargo, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Wargo, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Wargo, M.D. accept Medicare? ▼
Mark Wargo, M.D. appears in CMS Medicare data with 16,926 Part D claims and 1,054 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Wargo, M.D.'s credentials? ▼
Mark Wargo, M.D.'s NPI is 1457304156 with credentials M.D.. 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 (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
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 May 2026.