Registry data as of Aug 27, 2026

Alexandra Markou-Guzman, DMD

Pediatric Dentistry · Brooklyn, NY

Alexandra Markou-Guzman, DMD is a pediatric dentistry with a practice address in Brooklyn, New York, and NPI 1326749433, issued on Mar 15, 2023. Check the license (New York 064840, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1326749433
Name
Alexandra Markou-Guzman
Credential
DMD
Primary taxonomy
Pediatric Dentistry 1223P0221X
License number
064840 NY
Self-reported in NPPES; status is on the state search
Practice location
3710 13TH Ave, Brooklyn, NY 11218
Phone
(718) 686-7600
Enumerated
Mar 15, 2023
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 3710 13TH Ave

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

  1. Jean ChaifetzDoula1043140247
  2. Daniela LaylievStudent in an Organized Health Care Education/Training Program1801543939
  3. Katerina MeyerDentist1720431489
  4. Madison OphaugPediatric Dentistry1154064566
  5. Jovon Pryce, ODOptometrist1245152024
  6. Yasmeen Siripathane Castro, DDSDentist1326887456

Verify Alexandra Markou-Guzman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 064840
    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
Find the New York 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.

Industry payments in 2024: $15.32

1 payment, mostly food and beverage; the largest payer was Elevate Oral Care. The 2,103 providers of this specialty with any payment received $472.78 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alexandra Markou-Guzman$15.32
  2. Specialty average$472.78

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Pediatric Dentistry providers in New York

There are 788 pediatric dentistry records in New York.

Other pediatric dentistry records in New York

  1. Marium AbdouBrooklyn, NY1821787490
  2. Sam Abettan, DDSWest Hempstead, NY1720517600
  3. Marina Abramov, DDSRego Park, NY1932636388
  4. Raya Abu-Zahra, DDSNew York, NY1316492838
  5. Lynnette Acevedo, DMDHauppauge, NY1699954495
  6. Elizabeth Ackerman, DDSBrooklyn, NY1144582875
  7. Kristin Adair, D.D.S.Rochester, NY1386960524
  8. Marlena AdamczykBrooklyn, NY1295317683
  9. Marc Adelberg, D.D.S.Nesconset, NY1205014792
  10. Sean Adler, DMDNew York, NY1669512851

Common questions

What is Alexandra Markou-Guzman, DMD's NPI number?

Alexandra Markou-Guzman, DMD's National Provider Identifier (NPI) is 1326749433, issued on Mar 15, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Alexandra Markou-Guzman, DMD located?

The NPPES record lists a practice address at 3710 13TH Ave, Brooklyn, NY, 11218. Phone: (718) 686-7600. Providers update this record themselves, so call before visiting.

How can I verify Alexandra Markou-Guzman, DMD's license?

NPPES lists New York license number 064840, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.