NPPES file of Aug 9, 2026

Aileen S. Tan, MD

Internal Medicine Physician · Las Vegas, NV

Aileen S. Tan, MD is an internal medicine physician with a practice address in Las Vegas, Nevada, and NPI 1720166234, issued on Nov 1, 2006. Check the license (Nevada 14653, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720166234
Name
Aileen S. Tan
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
14653 NV
40385-20 WI
Self-reported in NPPES; status is on the state search
Practice location
2704 N Tenaya Way, Las Vegas, NV 89128
Phone
(702) 243-8500
Enumerated
Nov 1, 2006
Record last updated
Nov 19, 2024
Medicaid ID
1720166234 NV
Medicare enrollment
Enrolled (PECOS I20160201002995); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2704 N Tenaya Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alexander Abesamis, APRN-RXNurse Practitioner1164902185
  2. Elena Andrews, M.D.Family Medicine Physician1588751556
  3. Anthony Arslan, D.O.Geriatric Medicine (Family Medicine) Physician1619132800
  4. Stephanie Ashman, M.D.Internal Medicine Physician1417279423
  5. Elizabeth Brewer, CNM, WNHPWomen's Health Nurse Practitioner1851399109
  6. Roslyn Collins, APNFamily Nurse Practitioner1891762712

Verify Aileen S. Tan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNevada State Board of Medical Examiners
    Search for license 14653
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Nevada license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.5 times the Medicare Part D claims of the average internal medicine physician in 2024

8,023 Medicare Part D claims for 782 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 22 claims were for opioids.

  1. Aileen Tan8,023
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium697 claims
  2. Levothyroxine Sodium369 claims
  3. Amlodipine Besylate365 claims
  4. Losartan Potassium358 claims
  5. Lisinopril338 claims
  6. Metoprolol Succinate231 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

  1. 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).

Aileen S. Tan among 1,229 internal medicine physician records in Nevada

Aileen S. Tan, MD is one of 1,229 internal medicine physician records with a practice address in Nevada. 82% 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, 59% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1987 · median 2006 among the 772 with a school on file
  • Record last updated2024 · 43% 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 Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

716 internal medicine physician records list a practice address in Las Vegas

They are 716 of the 65,269 NPPES records with a practice address in Las Vegas, and 1,229 internal medicine physician records in Nevada.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Sameer Abu-Samrah, MDLas Vegas, NV 891281770553802
  2. Savita Chander, MDLas Vegas, NV 891281447255773
  3. Anit Dua, MDLas Vegas, NV 891281134119712
  4. James Eells, MDLas Vegas, NV 891281679546139
  5. Kimball Huang, MDLas Vegas, NV 891281073502084
  6. Sassan Kaveh, M.D.Las Vegas, NV 891281851385447
  7. Anne Kristensen, M.D.Las Vegas, NV 891281861499733
  8. Mohammed Najmi, M.D.Las Vegas, NV 891281699775163

Common questions

What is Aileen S. Tan, MD's NPI number?

Aileen S. Tan, MD's National Provider Identifier (NPI) is 1720166234, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Aileen S. Tan, MD located?

The NPPES record lists a practice address at 2704 N Tenaya Way, Las Vegas, NV, 89128. Phone: (702) 243-8500. Providers update this record themselves, so call before visiting.

How can I verify Aileen S. Tan, MD's license?

NPPES lists Nevada license number 14653, 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 Aileen S. Tan, MD prescribe under Medicare Part D?

In 2024, Aileen S. Tan, MD had 8,023 Medicare Part D claims for 782 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.