Medicare Enrolled
Dr. Gregory Williams, D.O.
Family Medicine · Tallahassee, FL
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Williams 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. Williams
Dr. Gregory Williams is a family medicine specialist in Tallahassee, FL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Williams performed 22,584 Medicare services across 4,885 unique beneficiaries.
The Data Coverage level for Dr. Williams 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.
✓ 19 years in practice
▲ Top 0% volume in FL
Medicare Practice Summary
Medicare Utilization ↗22,584
Medicare services
Top 0% in FL for family medicine
4,885
Unique beneficiaries
$15
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~1,189 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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) | 12,976 | $0 | $1 |
| Screening mammography | 1,058 | $62 | $159 |
| 3D screening mammography (tomosynthesis) | 1,007 | $26 | $55 |
| Bone density scan (DEXA) | 635 | $18 | $135 |
| Office visit, established patient (30-39 min) | 550 | $87 | $187 |
| Chest X-ray, 2 views | 530 | $11 | $31 |
| Echocardiogram, transthoracic | 447 | $70 | $269 |
| X-ray of hand, minimum of 3 views | 428 | $13 | $34 |
| X-ray of wrist, minimum of 3 views | 408 | $14 | $39 |
| Foot X-ray, 3+ views | 294 | $12 | $33 |
| Blood draw (venipuncture) | 235 | $8 | $15 |
| Lipid panel (cholesterol and triglycerides) | 150 | $13 | $60 |
| Ultrasound scan of head and neck soft tissue | 145 | $40 | $125 |
| X-ray of lower and sacral spine, minimum of 4 views | 143 | $16 | $52 |
| X-ray of knee, 1-2 views | 137 | $12 | $33 |
| Complete blood count (CBC) with differential | 136 | $8 | $35 |
| CT scan of abdomen and pelvis with contrast | 127 | $112 | $346 |
| Complete ultrasound scan of abdomen | 122 | $36 | $136 |
| Comprehensive metabolic blood panel | 119 | $10 | $48 |
| Hemoglobin A1c test (diabetes monitoring) | 118 | $9 | $44 |
| Shoulder X-ray, 2+ views | 114 | $12 | $33 |
| Diagnostic mammography of 1 breast | 113 | $40 | $152 |
| Ultrasound of both sides of head and neck blood flow | 113 | $69 | $243 |
| Thyroid stimulating hormone (TSH) test | 108 | $16 | $76 |
| Limited ultrasound scan of 1 breast | 104 | $29 | $89 |
| Hip X-ray, 2-3 views | 97 | $14 | $41 |
| CT scan of head/brain, without contrast | 93 | $38 | $230 |
| CT scan of chest, without contrast | 89 | $48 | $293 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 88 | $41 | $167 |
| Ct scan of heart with evaluation of blood vessel calcium | 83 | $39 | $177 |
| X-ray of upper spine, 4-5 views | 73 | $18 | $52 |
| Regadenoson injection (Lexiscan) for heart stress test | 72 | $48 | $84 |
| Complete ultrasound scan of pelvis | 67 | $36 | $126 |
| Test to measure oxygen level in blood using ear or finger device continuously overnight | 66 | $17 | $46 |
| Ct scan of chest with contrast | 64 | $57 | $338 |
| Creatinine test (kidney function) | 64 | $5 | $23 |
| Vitamin B-12 level test | 64 | $15 | $68 |
| Vitamin D level test | 62 | $29 | $134 |
| Urine microalbumin test (kidney screening) | 61 | $5 | $8 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 61 | $39 | $110 |
| Diagnostic mammography of both breasts | 59 | $55 | $188 |
| Low dose ct scan of chest for lung cancer screening | 58 | $69 | $145 |
| Limited ultrasound scan of abdomen | 58 | $31 | $108 |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | 56 | $160 | $508 |
| Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina | 55 | $42 | $114 |
| Complete ultrasound scan behind abdominal cavity | 54 | $30 | $133 |
| Technetium tc-99m sestamibi, diagnostic, per study dose | 54 | $89 | $215 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | 50 | $48 | $323 |
| Knee X-ray, 3 views | 47 | $14 | $40 |
| Liver enzyme (sgot), level | 43 | $5 | $23 |
| X-ray of ankle, minimum of 3 views | 42 | $10 | $34 |
| Urinalysis, manual | 41 | $3 | $12 |
| Heart rhythm recording continous external ekg over more than 48 hours up to 7 days | 41 | $8 | $30 |
| Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days | 41 | $17 | $50 |
| Limited ultrasound scan of joint or other extremity structure except blood vessels | 38 | $12 | $36 |
| Office visit, established patient (20-29 min) | 37 | $59 | $121 |
| X-ray of middle spine, 3 views | 35 | $11 | $41 |
| Ct scan of abdomen and pelvis without contrast | 32 | $59 | $230 |
| X-ray of both hips, 2 views | 30 | $13 | $39 |
| Flu vaccine administration | 30 | $30 | $34 |
| Electrocardiogram (EKG), 12-lead | 28 | $10 | $80 |
| Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report | 28 | $89 | $249 |
| X-ray of ribs on side of body, minimum of 3 views | 27 | $14 | $41 |
| Flu vaccine, high-dose | 26 | $72 | $112 |
| Ultrasound study of arm or leg veins with compression and maneuvers | 26 | $66 | $238 |
| X-ray of sacrum and tailbone, minimum of 2 views | 23 | $9 | $33 |
| Ct scan of abdomen and pelvis before and after contrast | 22 | $133 | $424 |
| Basic metabolic blood panel | 22 | $8 | $38 |
| Free thyroxine (T4) test | 21 | $9 | $41 |
| Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected | 16 | $140 | $150 |
| Blood glucose (sugar) level | 12 | $4 | $18 |
| Annual wellness visit, follow-up | 11 | $127 | $182 |
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.
2.0% high complexity
64.7% medium
33.3% routine
Geographic Context
Family medicine physicians within 10 mi
238
Per 100K population
80.6
County median income
$65,074
Nearest hospital
TALLAHASSEE MEMORIAL HEALTHCARE
0.0 mi
0.0 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. Williams is a mixed practice specialist, with above-average Medicare volume (top 0% in FL), with 19 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. Williams experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Williams performed 12,976 contrast dye for imaging (iodine-based) 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. Williams's costs compare to other family medicine physicians in Tallahassee?
Dr. Williams's average Medicare payment per service is $15. 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. Williams) 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.
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