Rajeev Nayar, MD
Gastroenterology Physician · Milwaukee, WI
Rajeev Nayar, MD is a gastroenterology physician with a practice address in Milwaukee, Wisconsin, and NPI 1346217023, issued on Mar 2, 2006. Check the license (Wisconsin 39631-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Rajeev Nayar
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 39631-020 WI
036096635 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2801 W KK River Pkwy, Milwaukee, WI 53215
- Phone
- (414) 908-6500
- Enumerated
- Mar 2, 2006
- Record last updated
- Nov 18, 2025
- Fax
- (414) 385-2980
- Medicaid ID
- 32432500 WI
- Medicare enrollment
- Enrolled (PECOS I20130612000249); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 340 in Wisconsin → Look up another NPI →
Also registered at 2801 W KK River Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Reid Bowers, PA-CPhysician Assistant1710001029
- Luann Bronek, PAPhysician Assistant1821065517
- Vanessa Cain, MSN RNRegistered Nurse1033579263
- Cristino Canga, MDGastroenterology Physician1588631253
- Richard Carballo, M.D.Vascular Surgery Physician1245208644
- Casey Cohn, MS, FNP, APNPNurse Practitioner1265539704
Verify Rajeev Nayar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 39631-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average gastroenterology physician in 2024
357 Medicare Part D claims for 190 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Omeprazole243 claims
- Fluconazole20 claims
- Gavilyte-G12 claims
- Metoclopramide Hcl12 claims
- Cholestyramine11 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): 100 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 2 group practices
- David C Chua Mdsc LtdChicago, IL
- Northwestern Medical Faculty FoundationLake Forest, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rajeev Nayar among 340 gastroenterology physician records in Wisconsin
Rajeev Nayar, MD is one of 340 gastroenterology physician records with a practice address in Wisconsin. 83% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 44% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1982 · median 2003 among the 239 with a school on file
- Record last updated2025 · 52% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Wisconsin
There are 340 gastroenterology physician records in Wisconsin.
All 340 in Wisconsin → Every provider in Milwaukee → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Cristino Canga, MDMilwaukee, WI 532151588631253
- David Carron, MDMilwaukee, WI 532151023085487
- Joseph Geenen, MDMilwaukee, WI 532151639146392
- Daniel Geenen, M.D.Milwaukee, WI 532151144297508
- Nalini Guda, MDMilwaukee, WI 532151750358420
- Lyndon Hernandez, MDMilwaukee, WI 532151831166503
- Joseph Kim, M.D.Milwaukee, WI 532151962472589
- Helen Lantz, MDMilwaukee, WI 532151639146301
Common questions
What is Rajeev Nayar, MD's NPI number?
Rajeev Nayar, MD's National Provider Identifier (NPI) is 1346217023, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rajeev Nayar, MD located?
The NPPES record lists a practice address at 2801 W KK River Pkwy, Milwaukee, WI, 53215. Phone: (414) 908-6500. Providers update this record themselves, so call before visiting.
How can I verify Rajeev Nayar, MD's license?
NPPES lists Wisconsin license number 39631-020, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Rajeev Nayar, MD prescribe under Medicare Part D?
In 2024, Rajeev Nayar, MD had 357 Medicare Part D claims for 190 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Rajeev Nayar, MD's MIPS final score?
The 2023 MIPS final score is 100 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.