NPPES file of Aug 9, 2026

Nicholas Steve Vlahos, MD

Internal Medicine Physician · Chandler, AZ

Nicholas Steve Vlahos, MD is an internal medicine physician with a practice address in Chandler, Arizona, and NPI 1538228044, issued on Dec 8, 2006. Check the license (Arizona 55337, as entered in NPPES) on the Arizona Medical Board; 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
1538228044
Name
Nicholas Steve Vlahos
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
55337 AZ
Self-reported in NPPES; status is on the state search
Practice location
245 S Dobson RD, Chandler, AZ 85224
Phone
(480) 895-5870
Enumerated
Dec 8, 2006
Record last updated
Apr 23, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(480) 895-5870
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 245 S Dobson RD

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

  1. Sultana Akhter, MDInternal Medicine Physician1477810760
  2. Kelsey Collins, PAPhysician Assistant1659800290
  3. Megan Guse, PA-CMedical Physician Assistant1871813840
  4. Carly Hopkins, PA-CPhysician Assistant1477989291
  5. Brooke Lee, PA-CPhysician Assistant1235641747
  6. Cheryl Maurice, M.D.Internal Medicine Physician1265497713

Verify Nicholas Steve Vlahos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 55337
    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 Arizona 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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91% fewer Medicare Part D claims than the average internal medicine physician in 2024

276 Medicare Part D claims for 111 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Nicholas Vlahos276
  2. Specialty average3,176

Most prescribed

  1. Rosuvastatin Calcium21 claims
  2. Atorvastatin Calcium18 claims
  3. Levothyroxine Sodium18 claims
  4. Pantoprazole Sodium18 claims
  5. Finasteride15 claims
  6. Lisinopril15 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.

Nicholas Steve Vlahos among 2,853 internal medicine physician records in Arizona

Nicholas Steve Vlahos, MD is one of 2,853 internal medicine physician records with a practice address in Arizona. 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 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 55% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2019 · 51% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

93 internal medicine physician records list a practice address in Chandler

They are 93 of the 5,497 NPPES records with a practice address in Chandler, and 2,853 internal medicine physician records in Arizona.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Ammar Alsheikh, M.D.Chandler, AZ 852241083609515
  2. Rudolph Cane, MDChandler, AZ 852241700865144
  3. Susan Carter, M.D.Chandler, AZ 852241922060433
  4. Melanie Cloonan Schulte, MDChandler, AZ 852241376521914
  5. Ralph D'Silva, M.D.Chandler, AZ 852241871594259
  6. Ravi Gupta, MDChandler, AZ 852241790751949
  7. Amita Gupta, MDChandler, AZ 852241962462630
  8. James Lieber, MDChandler, AZ 852241083690283

Common questions

What is Nicholas Steve Vlahos, MD's NPI number?

Nicholas Steve Vlahos, MD's National Provider Identifier (NPI) is 1538228044, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nicholas Steve Vlahos, MD located?

The NPPES record lists a practice address at 245 S Dobson RD, Chandler, AZ, 85224. Phone: (480) 895-5870. Providers update this record themselves, so call before visiting.

How can I verify Nicholas Steve Vlahos, MD's license?

NPPES lists Arizona license number 55337, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Nicholas Steve Vlahos, MD prescribe under Medicare Part D?

In 2024, Nicholas Steve Vlahos, MD had 276 Medicare Part D claims for 111 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.