NPPES file of Aug 9, 2026

William George Liakos, M.D.

Pediatrics Physician · Roswell, NM

William George Liakos, M.D. is a pediatrics physician with a practice address in Roswell, New Mexico, and NPI 1184676249, issued on May 17, 2006. Check the license (New Mexico 99-75, as entered in NPPES) on the New Mexico 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
1184676249
Name
William George Liakos
Credential
M.D.
Primary taxonomy
Pediatrics Physician 208000000X
License number
99-75 NM
Self-reported in NPPES; status is on the state search
Practice location
813 N Washington Ave, Roswell, NM 88201
Phone
(575) 622-2606
Enumerated
May 17, 2006
Record last updated
Jun 6, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(575) 622-6645
Medicaid ID
Z4477 NM
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 813 N Washington Ave

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

  1. Cynthia Amaya, CPNP-PCPediatrics Physician1104497148
  2. Karen Carson, M.D.Pediatrics Physician1306898739
  3. Kassidy Chism, FNP-CPediatric Nurse Practitioner1326838079
  4. Beverley Elliott, M.D.Pediatrics Physician1376595405
  5. Abelardo Garcia, M.D.Pediatrics Physician1083668370
  6. Deanna Henderson, CPNP-PCPediatrics Physician1801522446

Verify William George Liakos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Mexico Medical Board
    Search for license 99-75
    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 New Mexico license search

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97% fewer Medicare Part D claims than the average pediatrics physician in 2024

12 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. William Liakos12
  2. Specialty average375

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.

William George Liakos among 453 pediatrics physician records in New Mexico

William George Liakos, M.D. is one of 453 pediatrics physician records with a practice address in New Mexico. 28% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 50% newer
  • In a Medicare fileYes · 28% of these records are
  • In the CMS Doctors and Clinicians fileNo · 10% of these records are
  • Record last updated2011 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a New Mexico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

15 pediatrics physician records list a practice address in Roswell

They are 15 of the 1,025 NPPES records with a practice address in Roswell, and 453 pediatrics physician records in New Mexico.

The 8 pediatrics physician records with the nearest ZIP codes

  1. Cynthia Amaya, CPNP-PCRoswell, NM 882011104497148
  2. Karen Carson, M.D.Roswell, NM 882011306898739
  3. Jose Antonio Elizondo Leal, M.D.Roswell, NM 882011801477435
  4. Beverley Elliott, M.D.Roswell, NM 882011376595405
  5. Abelardo Garcia, M.D.Roswell, NM 882011083668370
  6. Margarita Macias, M.D.Roswell, NM 882011265470710
  7. Michael Marquardt, M.D.Roswell, NM 882011104887397
  8. Warren McKelvy, MDRoswell, NM 882011790738565

Common questions

What is William George Liakos, M.D.'s NPI number?

William George Liakos, M.D.'s National Provider Identifier (NPI) is 1184676249, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William George Liakos, M.D. located?

The NPPES record lists a practice address at 813 N Washington Ave, Roswell, NM, 88201. Phone: (575) 622-2606. Providers update this record themselves, so call before visiting.

How can I verify William George Liakos, M.D.'s license?

NPPES lists New Mexico license number 99-75, as entered by the provider. Search the New Mexico Medical Board at https://www.nmmb.state.nm.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William George Liakos, M.D. prescribe under Medicare Part D?

In 2024, William George Liakos, M.D. had 12 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.