Gregory Ryan Sutton, M.D.
Hematology & Oncology Physician · Chattanooga, TN
Gregory Ryan Sutton, M.D. is a hematology & oncology physician with a practice address in Chattanooga, Tennessee, and NPI 1255575270, issued on Apr 21, 2009. Check the license (Tennessee 47962, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory Ryan Sutton
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 47962 TN
Self-reported in NPPES; status is on the state search - Practice location
- 2200 E 3RD St, Chattanooga, TN 37404
- Phone
- (423) 698-1844
- Enumerated
- Apr 21, 2009
- Record last updated
- May 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (423) 624-2226
- Medicare enrollment
- Enrolled (PECOS I20150625000650); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 273 in Tennessee → Look up another NPI →
Also registered at 2200 E 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Wood, PA-CMedical Physician Assistant1366417776
Verify Gregory Ryan Sutton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 47962Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,986 Medicare Part D claims for 506 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 161 claims were for opioids.
Most prescribed
- Anastrozole178 claims
- Prednisone175 claims
- Ondansetron Odt161 claims
- Hydroxyurea128 claims
- Potassium Chloride106 claims
- Letrozole98 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,544.91
68 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Tennessee Oncology PLLCChattanooga, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Ryan Sutton among 273 hematology & oncology physician records in Tennessee
Gregory Ryan Sutton, M.D. is one of 273 hematology & oncology physician records with a practice address in Tennessee. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 63% of them.
- NPI issued2009 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated2009 · median 2004 among the 223 with a school on file
- Record last updated2015 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Tennessee
There are 273 hematology & oncology physician records in Tennessee.
All 273 in Tennessee → Every provider in Chattanooga → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Bertrand Anz, M.D.Chattanooga, TN 374041205996014
- Edward Arrowsmith, MDChattanooga, TN 374041780632687
- Brooke Daniel, MDChattanooga, TN 374041326096231
- Davey Daniel, MDChattanooga, TN 374041942258751
- Derek Holland, M.D.Chattanooga, TN 374041487603817
- Benjamin Nadeau, MDChattanooga, TN 374041457563728
- Aleksandra Robertson, DOChattanooga, TN 374041780146290
- Michael Stipanov, MDChattanooga, TN 374041255384616
Common questions
What is Gregory Ryan Sutton, M.D.'s NPI number?
Gregory Ryan Sutton, M.D.'s National Provider Identifier (NPI) is 1255575270, issued on Apr 21, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Ryan Sutton, M.D. located?
The NPPES record lists a practice address at 2200 E 3RD St, Chattanooga, TN, 37404. Phone: (423) 698-1844. Providers update this record themselves, so call before visiting.
How can I verify Gregory Ryan Sutton, M.D.'s license?
NPPES lists Tennessee license number 47962, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Ryan Sutton, M.D. prescribe under Medicare Part D?
In 2024, Gregory Ryan Sutton, M.D. had 2,986 Medicare Part D claims for 506 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Gregory Ryan Sutton, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.