NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1306899729 M.D.
Verify on CMS → Gary Schreiber, M.D.
Radiation Oncology Physician in Chicago, 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 6,018 in Radiation Oncology 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
52
Medicare Part D claims · 30 beneficiaries · Radiation Oncology Physician avg: 186
MIPS score
86.3/100
▲ 3 pts above national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gary Schreiber, M.D. reported a CMS MIPS final score of 86.3/100 - above the 83.1 national average - and filed 52 Medicare Part D claims in 2023.
- 86.3/100
- MIPS score · +3 vs avg
- 52
- Part D claims, 2023
- 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.
Gary Schreiber, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
86 Top 48% higher than 52% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Gary Schreiber, M.D. sits
This provider among radiation oncology physician peers
Across the 1,988 radiation oncology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Gary Schreiber, M.D. writes more Part D claims than 28% of them and scores higher on MIPS quality than 51% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one radiation oncology physician peer from a representative sample of 60; the gold marker is Gary Schreiber, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Gary Schreiber, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Gary Schreiber, M.D.?
High performer (top quartile)Primary specialty
Radiation Oncology Physician
Medicare Part D claims
52 72% vs specialty avg
MIPS final score
86.3/100 3.2 pts vs avg
Specialty distribution in Illinois
How Radiation Oncology Physician compares to other specialties among Illinois providers
Medicare quality performance, MIPS
Gary Schreiber, M.D.'s 2023 MIPS final score plotted against the Radiation Oncology Physician national average
- MIPS Final Score
- 86.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Radiation Oncology Physician) - 86.3/100 vs national avg 83.1
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).
Gary Schreiber, M.D. appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding M.D. credentials at 5140 N CALIFORNIA AVE STE G115, Chicago, IL, 60625, with a listed phone of (773) 989-1613. NPI 1306899729 was issued on 05/18/2006.
Medicare Part D records for calendar year 2023 show 52 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $784 in drug spend, with an opioid prescribing rate of 25.0%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 86.3/100 for the 2023 performance year (Quality 68.8, Cost 80.7), compared with the national average of 83.1.
Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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
Provider Details
| NPI | 1306899729 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/18/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
86.287
Final Score
Avg: 83.1
68.7997
Quality
80.6591
Cost
81
Promoting Interoperability
Reporting: Group practice
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 Gary Schreiber, M.D.. To verify Gary Schreiber, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
52
Total Claims
$784
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 67
- Total Day Supply
- 1,438
- Generic Drug Cost
- $700
- Opioid Claims
- 13 (25.0% rate)
Patient Demographics
- Average Patient Age
- 72.7 years
- Avg HCC Risk Score
- 1.55
- Gender Split
- 40% female / 60% male
Radiation Oncology Physician Overview
How Gary Schreiber, M.D. fits within the Radiation Oncology Physician landscape nationally.
6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider
Gary Schreiber, M.D.'s 52 claims are below the specialty average of 186.
Nearby Radiation Oncology Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Schreiber.
Dr. Mohamed Abazeed
MD, PHD
Chicago, IL
Dr. Christopher Abraham
MD
Springfield, IL
Dr. Ross Abrams
M.D.
Chicago, IL
Dr. Iftekhar Ahmad
M.D.
Rockford, IL
Dr. Elke Aippersbach
M.D.,M.SC.,
Oak Lawn, IL
Compare Radiation Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Radiation Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Gary Schreiber, M.D.'s specialty? ▼
Gary Schreiber, M.D. specializes in Radiation Oncology Physician and practices in Chicago, Illinois. Credentials: M.D..
How much does Gary Schreiber, M.D. prescribe under Medicare Part D? ▼
In 2023, Gary Schreiber, M.D. wrote 52 Medicare Part D claims totaling $784 in drug costs for 30 beneficiaries.
What is Gary Schreiber, M.D.'s Medicare quality score? ▼
Gary Schreiber, M.D. has a CMS MIPS Final Score of 86.3/100 (Quality: 68.8, Cost: 80.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gary Schreiber, M.D. located? ▼
Gary Schreiber, M.D. is located at 5140 N CALIFORNIA AVE STE G115, Chicago, IL, 60625. Phone: (773) 989-1613.
What is Gary Schreiber, M.D.'s NPI number? ▼
Gary Schreiber, M.D.'s National Provider Identifier (NPI) is 1306899729, issued on 05/18/2006.
Does Gary Schreiber, M.D. prescribe opioids? ▼
Yes, Gary Schreiber, M.D. had 13 opioid claims in 2023 with an opioid prescribing rate of 25.0%.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
Does Gary Schreiber, M.D. accept Medicare? ▼
Gary Schreiber, M.D. appears in CMS Medicare data with 52 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Schreiber, M.D.'s credentials? ▼
Gary Schreiber, M.D.'s NPI is 1306899729 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.