Robert Orville Nielsen, M.D.
Gastroenterology Physician · Salt Lake City, UT
Robert Orville Nielsen, M.D. is a gastroenterology physician with a practice address in Salt Lake City, Utah, and NPI 1326069832, issued on Jul 21, 2006. Check the license (Utah 154472-1205, as entered in NPPES) on the Utah Medical Licensing Board; the Medicare figures below come from public CMS files.
- Name
- Robert Orville Nielsen
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 154472-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 333 S 900 E, Salt Lake City, UT 84102
- Phone
- (801) 535-8163
- Enumerated
- Jul 21, 2006
- Record last updated
- Sep 26, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (801) 355-4011
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 149 in Utah → Look up another NPI →
Also registered at 333 S 900 E
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Orville Nielsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersUtah Medical Licensing Board
Search for license 154472-1205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average gastroenterology physician in 2024
13 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Robert Orville Nielsen among 149 gastroenterology physician records in Utah
Robert Orville Nielsen, M.D. is one of 149 gastroenterology physician records with a practice address in Utah. 85% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 48% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2007 · 55% 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 Utah practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Utah
There are 149 gastroenterology physician records in Utah.
All 149 in Utah → Every provider in Salt Lake City → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Melvin Kuwahara, M.D.Salt Lake City, UT 841021306871116
- Robert Miller, MDSalt Lake City, UT 841021306925433
- Suryanarayana Reddy ChallaSalt Lake City, UT 841031356830533
- Harold Cole, MDSalt Lake City, UT 841011346288180
- Dan Collins, MDSalt Lake City, UT 841031972745024
- Matthew Feurer, M.D.Salt Lake City, UT 841031508157942
- Darcie Gorman, M.D.Salt Lake City, UT 841031063637353
- Joseph Merrill, MDSalt Lake City, UT 841031881758985
Common questions
What is Robert Orville Nielsen, M.D.'s NPI number?
Robert Orville Nielsen, M.D.'s National Provider Identifier (NPI) is 1326069832, issued on Jul 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Orville Nielsen, M.D. located?
The NPPES record lists a practice address at 333 S 900 E, Salt Lake City, UT, 84102. Phone: (801) 535-8163. Providers update this record themselves, so call before visiting.
How can I verify Robert Orville Nielsen, M.D.'s license?
NPPES lists Utah license number 154472-1205, as entered by the provider. Search the Utah Medical Licensing Board at https://secure.utah.gov/llv/search/index.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert Orville Nielsen, M.D. prescribe under Medicare Part D?
In 2024, Robert Orville Nielsen, M.D. had 13 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. 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.