Gregory Gan, MD, PHD
Radiation Oncology Physician · Kansas City, KS
Gregory Gan, MD, PHD is a radiation oncology physician with a practice address in Kansas City, Kansas, and NPI 1568698561, issued on Jun 4, 2009. Check the license (Kansas 04-42204, as entered in NPPES) on the Kansas State Board of Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Gregory Gan
- Credential
- MD, PHD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 04-42204 KS
Self-reported in NPPES; status is on the state search - Practice location
- 4001 Rainbow Blvd # MS 4001, Kansas City, KS 66160
- Phone
- (913) 588-3600
- Enumerated
- Jun 4, 2009
- Record last updated
- Sep 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191118002859); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 68 in Kansas → Look up another NPI →
Verify Gregory Gan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKansas State Board of Healing Arts
Search for license 04-42204Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% more Medicare Part D claims than the average radiation oncology physician in 2024
163 Medicare Part D claims for 51 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 40 claims were for opioids.
Most prescribed
- Oxycodone Hcl29 claims
- Gabapentin27 claims
- Lidocaine Hcl Viscous19 claims
- Methylprednisolone12 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.
The MIPS final score for 2023 (Medicare payment program): 91.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Kansas University Physicians IncLenexa, KS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Gan among 68 radiation oncology physician records in Kansas
Gregory Gan, MD, PHD is one of 68 radiation oncology physician records with a practice address in Kansas. 72% 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 66% of them.
- NPI issued2009 · 66% of these records are older, 28% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2009 · median 2007 among the 41 with a school on file
- Record last updated2019 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Kansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Kansas
There are 68 radiation oncology physician records in Kansas.
All 68 in Kansas → Every provider in Kansas City → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- David Akhavan, MD, PHDKansas City, KS 661601992185334
- Jes Alexander, MDKansas City, KS 661601942525423
- Yiqing Butler-Xu, M.D.Kansas City, KS 661601659720225
- Ronald Chen, M.D.Kansas City, KS 661601265510309
- Andrew Hoover, M.D.Kansas City, KS 661601831418276
- Ying Hou, M.D.Kansas City, KS 661601932460854
- Leela Krishnan, M.D.Kansas City, KS 661601255406872
- Melissa Mitchell, MDKansas City, KS 661601982824546
Common questions
What is Gregory Gan, MD, PHD's NPI number?
Gregory Gan, MD, PHD's National Provider Identifier (NPI) is 1568698561, issued on Jun 4, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Gan, MD, PHD located?
The NPPES record lists a practice address at 4001 Rainbow Blvd # MS 4001, Kansas City, KS, 66160. Phone: (913) 588-3600. Providers update this record themselves, so call before visiting.
How can I verify Gregory Gan, MD, PHD's license?
NPPES lists Kansas license number 04-42204, as entered by the provider. Search the Kansas State Board of Healing Arts at https://www.ksbha.ks.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Gan, MD, PHD prescribe under Medicare Part D?
In 2024, Gregory Gan, MD, PHD had 163 Medicare Part D claims for 51 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Gregory Gan, MD, PHD's MIPS final score?
The 2023 MIPS final score is 91.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.