Medicare Enrolled

Dr. Mark Timken, MD

Radiation Oncology · Gainesville, FL
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
3131 NW 13TH STREET, Gainesville, FL 32609
3522268206
In practice since 2005 (20 years)
NPI: 1427039627 verify on NPPES ↗
High
DATA COVERAGE
Data in 3 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Timken from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Timken

Dr. Mark Timken is a radiation oncology specialist in Gainesville, FL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Timken performed 11,111 Medicare services across 2,166 unique beneficiaries.

The Data Coverage level for Dr. Timken is High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 20 years in practice ▲ Top 19% volume in FL

Florida License Status

FL DOH · MQA
1
Active license
None
Board action on record
0
Recent admin complaints
Profession License # Status Expires Board Action
Medical Doctor 67809 Clear January 31, 2028 —
Data from Florida Department of Health Medical Quality Assurance. License records are public under Chapter 119, Florida Statutes. Verify directly on FL DOH →

Medicare Practice Summary

Medicare Utilization ↗
11,111
Medicare services
Top 19% in FL for radiation oncology
2,166
Unique beneficiaries
$26
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~556 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
MRI contrast dye injection (gadoterate) 5,093 $0 $2
MRI contrast dye injection (gadobutrol) 2,765 $0 $1
Mri scan of lower spinal canal without contrast 1,367 $89 $999
Mri scan of upper spinal canal without contrast 582 $83 $977
Mri scan of middle spinal canal without contrast 266 $75 $950
Mri scan of arm joint without contrast 266 $103 $1,034
Mri scan of leg joint without contrast 244 $108 $1,204
Mri scan of brain without contrast 90 $116 $1,168
Chest X-ray, 2 views 64 $13 $116
Mri scan of pelvis without contrast 43 $105 $1,186
Mri scan of leg without contrast 37 $119 $1,180
Mri scan of brain before and after contrast 35 $214 $2,262
Mri scan of lower spinal canal before and after contrast 30 $149 $1,666
X-ray of lower and sacral spine, 2-3 views 28 $24 $121
Hip X-ray, 2-3 views 24 $26 $142
Mri scan of upper spinal canal before and after contrast 21 $165 $1,725
X-ray of knee, 1-2 views 21 $17 $98
Shoulder X-ray, 2+ views 20 $11 $99
Mri scan of arm without contrast 18 $139 $1,222
Bone density scan (DEXA) 17 $36 $289
X-ray of upper spine, 2-3 views 16 $19 $117
Complete ultrasound scan behind abdominal cavity 15 $71 $380
X-ray of lower and sacral spine, minimum of 4 views 14 $31 $194
X-ray of upper spine, 4-5 views 13 $34 $160
X-ray of both hips, 2 views 11 $23 $128
Complete ultrasound scan of abdomen 11 $66 $401
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
Looking for a radiation oncology specialist in Gainesville?
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Geographic Context

Radiation oncologists within 10 mi
135
Per 100K population
47.9
County median income
$59,659
Nearest hospital
HCA FLORIDA NORTH FLORIDA HOSPITAL
8.4 mi

Data Sources

Provider Registry ✓ NPPES Weekly updates
Medicare Enrollment ✓ PECOS Monthly updates
Practice Data ✓ Medicare Util. Annual (CY lag)
Industry Payments — No payments N/A
Disciplinary History — Not public N/A

This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This measures how much public data is available about a provider — not how good they are. How we calculate this →

Summary

Dr. Timken is a mixed practice specialist, with above-average Medicare volume (top 19% in FL), with 20 years of NPI registration.

This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →

Frequently Asked Questions

Is Dr. Timken experienced with mri contrast dye injection (gadoterate)?
Based on Medicare claims data, Dr. Timken performed 5,093 mri contrast dye injection (gadoterate) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
How do Dr. Timken's costs compare to other radiation oncologists in Gainesville?
Dr. Timken's average Medicare payment per service is $26. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently High for Dr. Timken) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →

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About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →