Vivienne Yoon, M.D.
Endocrinology, Diabetes & Metabolism Physician · McKinney, TX
Vivienne Yoon, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in McKinney, Texas, and NPI 1689899221, issued on Apr 17, 2007. Check the license (Texas N9495, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Vivienne Yoon
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- N9495 TX
BP10035559 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5236 W University Dr, McKinney, TX 75071
- Phone
- (469) 800-5400
- Enumerated
- Apr 17, 2007
- Record last updated
- Jan 16, 2023
- Fax
- (469) 800-5410
- Medicaid ID
- 305622801 TX
- Medicare enrollment
- Enrolled (PECOS I20120921000611); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 743 in Texas → Look up another NPI →
Also registered at 5236 W University Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley AkinPhysician Assistant1437536034
- Buenalyn Belen, OTR, MS, CLTOccupational Therapist1366869836
- Brittany BonomoPhysical Therapist1750943346
- Timothy Brinkman, M.D.Family Medicine Physician1821065699
- Ryan Burkart, M.D.Surgery Physician1063685659
- Ashley Cardenas, PA-CPhysician Assistant1619444163
Verify Vivienne Yoon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N9495Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
3,418 Medicare Part D claims for 439 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Levothyroxine Sodium537 claims
- Metformin Hcl Er169 claims
- Ozempic151 claims
- Synthroid128 claims
- Jardiance124 claims
- Metformin Hcl104 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.
Industry payments in 2024: $1,279.27
74 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Healthtexas Provider NetworkDallas, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vivienne Yoon among 743 endocrinology, diabetes & metabolism physician records in Texas
Vivienne Yoon, M.D. is one of 743 endocrinology, diabetes & metabolism physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 39% of them.
- NPI issued2007 · 39% of these records are older, 48% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2006 · median 2004 among the 560 with a school on file
- Record last updated2023 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Texas
There are 743 endocrinology, diabetes & metabolism physician records in Texas.
All 743 in Texas → Every provider in McKinney → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Anthony Chuang, D.O.McKinney, TX 750711891082327
- Jane Lee, MDMcKinney, TX 750711871156018
- Jennifer St.john, DOMcKinney, TX 750711861789828
- Sana Ullah, M.D.McKiney, TX 750711871786467
- Muhammad Siddiqui, M.D.McKinney, TX 750691194011999
- Cathlyn Anderson, MDSugar Land, TX 750751023030269
- Rosemarie Lajara, MDPlano, TX 750751780862102
- Sindhu Igala, M.D.Prosper, TX 750781265760771
Common questions
What is Vivienne Yoon, M.D.'s NPI number?
Vivienne Yoon, M.D.'s National Provider Identifier (NPI) is 1689899221, issued on Apr 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Vivienne Yoon, M.D. located?
The NPPES record lists a practice address at 5236 W University Dr, McKinney, TX, 75071. Phone: (469) 800-5400. Providers update this record themselves, so call before visiting.
How can I verify Vivienne Yoon, M.D.'s license?
NPPES lists Texas license number N9495, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Vivienne Yoon, M.D. prescribe under Medicare Part D?
In 2024, Vivienne Yoon, M.D. had 3,418 Medicare Part D claims for 439 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.