Marvin Gerald Riske, M.D.
Internal Medicine Physician · Chandler, AZ
Marvin Gerald Riske, M.D. is an internal medicine physician with a practice address in Chandler, Arizona, and NPI 1295827871, issued on Sep 29, 2006. Check the license (Arizona 21421, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marvin Gerald Riske
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 21421 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 600 S Dobson RD Ste D27, Chandler, AZ 85224
- Phone
- (804) 960-0000
- Enumerated
- Sep 29, 2006
- Record last updated
- May 23, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (480) 496-7325
- Medicaid ID
- 194902 AZ
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 600 S Dobson RD Ste D27
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hajera Fatima, D.OFamily Medicine Physician1417353509
- Mehdy Zarandy, MDInternal Medicine Physician1346401700
Verify Marvin Gerald Riske in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 21421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
26 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Marvin Gerald Riske among 2,853 internal medicine physician records in Arizona
Marvin Gerald Riske, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2019 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
93 internal medicine physician records list a practice address in Chandler
They are 93 of the 5,497 NPPES records with a practice address in Chandler, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Chandler → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ammar Alsheikh, M.D.Chandler, AZ 852241083609515
- Rudolph Cane, MDChandler, AZ 852241700865144
- Susan Carter, M.D.Chandler, AZ 852241922060433
- Melanie Cloonan Schulte, MDChandler, AZ 852241376521914
- Ralph D'Silva, M.D.Chandler, AZ 852241871594259
- Ravi Gupta, MDChandler, AZ 852241790751949
- Amita Gupta, MDChandler, AZ 852241962462630
- James Lieber, MDChandler, AZ 852241083690283
Common questions
What is Marvin Gerald Riske, M.D.'s NPI number?
Marvin Gerald Riske, M.D.'s National Provider Identifier (NPI) is 1295827871, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marvin Gerald Riske, M.D. located?
The NPPES record lists a practice address at 600 S Dobson RD Ste D27, Chandler, AZ, 85224. Phone: (804) 960-0000. Providers update this record themselves, so call before visiting.
How can I verify Marvin Gerald Riske, M.D.'s license?
NPPES lists Arizona license number 21421, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marvin Gerald Riske, M.D. prescribe under Medicare Part D?
In 2024, Marvin Gerald Riske, M.D. had 26 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.