NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1548359938 M.D.
Verify on CMS → Parashar Nanavati, M.D.
Radiation Oncology Physician in Springfield, 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
92
Medicare Part D claims · 37 beneficiaries · Radiation Oncology Physician avg: 186
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Parashar Nanavati, M.D. filed 92 Medicare Part D claims in 2023 as a Radiation Oncology Physician in Springfield, Illinois.
- 92
- 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.
Parashar Nanavati, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
92 0th percentile higher than 0% of 1,370,886 prescribers
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)
Parashar Nanavati, M.D. 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 Parashar Nanavati, M.D.?
Quality data not reportedPrimary specialty
Radiation Oncology Physician
Medicare Part D claims
92 51% vs specialty avg
Specialty distribution in Illinois
How Radiation Oncology 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 Radiation Oncology 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).
Parashar Nanavati, M.D. appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding M.D. credentials at 701 N 1ST ST, Springfield, IL, 62781, with a listed phone of (217) 528-7541. NPI 1548359938 was issued on 10/12/2006.
Medicare Part D records for calendar year 2023 show 92 prescription claims written by this provider, covering 37 Medicare beneficiaries and totaling roughly $2K in drug spend.
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 | 1548359938 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/12/2006 |
Hospital and facility affiliations
Facilities where Parashar Nanavati, 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.
Springfield Clinic, LLP
Jacksonville, 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 Parashar Nanavati, M.D.. To verify Parashar Nanavati, 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.
92
Total Claims
$2K
Total Drug Cost
37
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 175
- Total Day Supply
- 4,811
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 75.6 years
- Avg HCC Risk Score
- 1.11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 61 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Radiation Oncology Physician Overview
How Parashar Nanavati, 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
Parashar Nanavati, M.D.'s 92 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 Nanavati.
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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Medical Specialties Explained
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Frequently Asked Questions
What is Parashar Nanavati, M.D.'s specialty? ▼
Parashar Nanavati, M.D. specializes in Radiation Oncology Physician and practices in Springfield, Illinois. Credentials: M.D..
How much does Parashar Nanavati, M.D. prescribe under Medicare Part D? ▼
In 2023, Parashar Nanavati, M.D. wrote 92 Medicare Part D claims totaling $2K in drug costs for 37 beneficiaries.
Where is Parashar Nanavati, M.D. located? ▼
Parashar Nanavati, M.D. is located at 701 N 1ST ST, Springfield, IL, 62781. Phone: (217) 528-7541.
What is Parashar Nanavati, M.D.'s NPI number? ▼
Parashar Nanavati, M.D.'s National Provider Identifier (NPI) is 1548359938, issued on 10/12/2006.
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.
What drugs does Parashar Nanavati, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Parashar Nanavati, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Parashar Nanavati, M.D. accept Medicare? ▼
Parashar Nanavati, M.D. appears in CMS Medicare data with 92 Part D claims and 37 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Parashar Nanavati, M.D.'s credentials? ▼
Parashar Nanavati, M.D.'s NPI is 1548359938 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
Compiled from official public sources by the PlainDoctor editorial team.