Mary Louise Sydney Leguyader, M. D.
Internal Medicine Physician · Salt Lake City, UT
Mary Louise Sydney Leguyader, M. D. is an internal medicine physician with a practice address in Salt Lake City, Utah, and NPI 1588027684, issued on Apr 5, 2016. Check the license (Utah 10490279-1205, as entered in NPPES) on the Utah Medical Licensing Board; the Medicare figures below come from public CMS files.
- Name
- Mary Louise Sydney Leguyader
- Credential
- M. D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 10490279-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 5169 S Cottonwood St, Salt Lake City, UT 84107
- Phone
- (801) 507-3310
- Enumerated
- Apr 5, 2016
- Record last updated
- May 14, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191106000761); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 2016
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 664 in Utah → Look up another NPI →
Also registered at 5169 S Cottonwood St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Louise Sydney Leguyader in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersUtah Medical Licensing Board
Search for license 10490279-1205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average internal medicine physician in 2024
3,650 Medicare Part D claims for 511 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 60 claims were for opioids.
Most prescribed
- Atorvastatin Calcium282 claims
- Amlodipine Besylate150 claims
- Omeprazole138 claims
- Levothyroxine Sodium117 claims
- Lisinopril108 claims
- Losartan Potassium105 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.
Bills Medicare through one group practice
- Ihc Health Services IncSalt Lake City, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Louise Sydney Leguyader among 664 internal medicine physician records in Utah
Mary Louise Sydney Leguyader, M. D. is one of 664 internal medicine physician records with a practice address in Utah. 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 2016, is newer than 68% of them.
- NPI issued2016 · 68% of these records are older, 31% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2016 · median 2007 among the 354 with a school on file
- Record last updated2019 · 56% 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 Utah practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
329 internal medicine physician records list a practice address in Salt Lake City
They are 329 of the 21,563 NPPES records with a practice address in Salt Lake City, and 664 internal medicine physician records in Utah.
All 664 in Utah → Every provider in Salt Lake City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Regina Drueding, M.D.Murray, UT 841071396850707
- Mansoor Emam, MDMurray, UT 841071720008287
- E Genebach, MDMurray, UT 841071003833468
- Steven Jepson, MDMurray, UT 841071568555068
- Timothy Johnson, MDMurray, UT 841071972524395
- Christopher Jones, MDMurray, UT 841071417967837
- Charles Mallender, MDMurray, UT 841071942261037
- Shweta Mishra, M.D.Salt Lake City, UT 841071184736639
Common questions
What is Mary Louise Sydney Leguyader, M. D.'s NPI number?
Mary Louise Sydney Leguyader, M. D.'s National Provider Identifier (NPI) is 1588027684, issued on Apr 5, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mary Louise Sydney Leguyader, M. D. located?
The NPPES record lists a practice address at 5169 S Cottonwood St, Salt Lake City, UT, 84107. Phone: (801) 507-3310. Providers update this record themselves, so call before visiting.
How can I verify Mary Louise Sydney Leguyader, M. D.'s license?
NPPES lists Utah license number 10490279-1205, 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 Mary Louise Sydney Leguyader, M. D. prescribe under Medicare Part D?
In 2024, Mary Louise Sydney Leguyader, M. D. had 3,650 Medicare Part D claims for 511 beneficiaries; 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.