Michael V. Koss, MD
Gastroenterology Physician · Sun City West, AZ
Michael V. Koss, MD is a gastroenterology physician with a practice address in Sun City West, Arizona, and NPI 1053365742, issued on May 19, 2006. Check the license (Arizona 29368, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael V. Koss
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 29368 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 14416 W Meeker Blvd, Sun City West, AZ 85375
- Phone
- (623) 583-5273
- Enumerated
- May 19, 2006
- Record last updated
- Jan 23, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (623) 583-5117
- Medicaid ID
- 569345 AZ
- Medicare enrollment
- Enrolled (PECOS I20031124000501); accepts Medicare assignment
- Medical or professional school
- Rutgers New Jersey Medical School, 1995
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 403 in Arizona → Look up another NPI →
Also registered at 14416 W Meeker Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael V. Koss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 29368Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% more Medicare Part D claims than the average gastroenterology physician in 2024
908 Medicare Part D claims for 391 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Pantoprazole Sodium326 claims
- Sod Sulf-Potass Sulf-Mag Sulf162 claims
- Omeprazole70 claims
- Famotidine60 claims
- Sucralfate29 claims
- Diphenoxylate-Atropine22 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 practice group's MIPS final score for 2023 (Medicare payment program): 87.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Banner Physician Specialists Arizona LLCSun City, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael V. Koss among 403 gastroenterology physician records in Arizona
Michael V. Koss, MD is one of 403 gastroenterology physician records with a practice address in Arizona. 84% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 41% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1995 · median 2001 among the 295 with a school on file
- Record last updated2008 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Arizona
There are 403 gastroenterology physician records in Arizona.
All 403 in Arizona → Every provider in Sun City West → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Teodor Pitea, MDSun City West, AZ 853751710193016
- Iliriana Ciraku, M.D.Surprise, AZ 853741912967969
- Daljit Bal, MDPeoria, AZ 853811144273533
- James Gordon, M.D.Peoria, AZ 853811780662320
- Anupama Mathew, M.D.Peoria, AZ 853811164620811
- Jagdish Patel, M.D.Peoria, AZ 853811730294844
- Elizabeth Rowland, MD, MBAPeoria, AZ 853811306409313
- Deepa Shah, MDPeoria, AZ 853811659390342
Common questions
What is Michael V. Koss, MD's NPI number?
Michael V. Koss, MD's National Provider Identifier (NPI) is 1053365742, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael V. Koss, MD located?
The NPPES record lists a practice address at 14416 W Meeker Blvd, Sun City West, AZ, 85375. Phone: (623) 583-5273. Providers update this record themselves, so call before visiting.
How can I verify Michael V. Koss, MD's license?
NPPES lists Arizona license number 29368, 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 Michael V. Koss, MD prescribe under Medicare Part D?
In 2024, Michael V. Koss, MD had 908 Medicare Part D claims for 391 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Michael V. Koss, MD's MIPS final score?
The 2023 MIPS final score is 87.8 of 100, reported for the practice group. 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.