Johnson Chong-Sein Kay
Rheumatology Physician · Las Vegas, NV
Johnson Chong-Sein Kay is a rheumatology physician with a practice address in Las Vegas, Nevada, and NPI 1184688061, issued on Apr 17, 2006. Check the license (Nevada DO 1995, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Johnson Chong-Sein Kay
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- DO 1995 NV
20A 9805 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4475 S Eastern Ave Ste 2400, Las Vegas, NV 89119
- Phone
- (702) 954-7672
- Enumerated
- Apr 17, 2006
- Record last updated
- Jul 29, 2022
- Medicare enrollment
- Enrolled (PECOS I20160906002389); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 44 in Nevada → Look up another NPI →
Verify Johnson Chong-Sein Kay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license DO 1995Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average rheumatology physician in 2024
2,824 Medicare Part D claims for 499 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydroxychloroquine Sulfate504 claims
- Methotrexate492 claims
- Prednisone300 claims
- Folic Acid258 claims
- Leflunomide218 claims
- Azathioprine214 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
- Optum Medical Group II Rhodes P CLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnson Chong-Sein Kay among 44 rheumatology physician records in Nevada
Johnson Chong-Sein Kay is one of 44 rheumatology physician records with a practice address in Nevada. 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 5% of them.
- NPI issued2006 · 5% of these records are older, 64% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2005 · median 2005 among the 27 with a school on file
- Record last updated2022 · 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 207RR0500X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Nevada
There are 44 rheumatology physician records in Nevada.
All 44 in Nevada → Every provider in Las Vegas → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Michael Colletti, M.D.Las Vegas, NV 891191306033931
- Farheen Rasool, M.DLas Vegas, NV 891191538346374
- Marven Gerel Cabling, MDLas Vegas, NV 891181063674265
- Nasim Daoud, MDLas Vegas, NV 891231518117795
- Tudor Jianu, M.D.Las Vegas, NV 891231821039546
- Chen Tang, M.D.Las Vegas, NV 891231679960264
- Sonya Mehta, MDLas Vegas, NV 891131861873564
- Gita Verma, M.D.Las Vegas, NV 891131871850404
Common questions
What is Johnson Chong-Sein Kay's NPI number?
Johnson Chong-Sein Kay's National Provider Identifier (NPI) is 1184688061, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Johnson Chong-Sein Kay located?
The NPPES record lists a practice address at 4475 S Eastern Ave Ste 2400, Las Vegas, NV, 89119. Phone: (702) 954-7672. Providers update this record themselves, so call before visiting.
How can I verify Johnson Chong-Sein Kay's license?
NPPES lists Nevada license number DO 1995, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Johnson Chong-Sein Kay prescribe under Medicare Part D?
In 2024, Johnson Chong-Sein Kay had 2,824 Medicare Part D claims for 499 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.