NPPES file of Aug 9, 2026

Zulema C. Guerrero Ballesteros, LCSW

Clinical Social Worker · Phoenix, AZ

Zulema C. Guerrero Ballesteros, LCSW is a clinical social worker with a practice address in Phoenix, Arizona, and NPI 1790377893, issued on Feb 9, 2021. Check the license (Arizona LCSW-21780, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1790377893
Name
Zulema C. Guerrero Ballesteros
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License numbers
LCSW-21780 AZ
LMSW-19083 AZ
099313 NY
089.0135900 VT
LW61576876 WA
Self-reported in NPPES; status is on the state search
Practice location
4600 E Washington St Ste 300, Phoenix, AZ 85034
Phone
(646) 450-7748
Enumerated
Feb 9, 2021
Record last updated
Jan 8, 2025
Medicare enrollment
Enrolled (PECOS I20240826000948); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest clinical social worker records → All 3,200 in Arizona → Look up another NPI →

Also registered at 4600 E Washington St Ste 300

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

  1. Michelle AdamsPhlebotomy Technician1730937723
  2. Cindy Barrios, RBTBehavior Technician1861218554
  3. Ashley BenysekBehavior Technician1407720113
  4. Valeria BlancoBehavior Technician1710779970
  5. Taliyah BookerBehavior Technician1891584371
  6. Sara BrancaccioBehavior Technician1063372274

Verify Zulema C. Guerrero Ballesteros in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license LCSW-21780    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 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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Bills Medicare through 2 group practices

  1. Valera Medical PABurlington, VT
  2. Valera Medical PCBrooklyn, NY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Zulema C. Guerrero Ballesteros among 3,200 clinical social worker records in Arizona

Zulema C. Guerrero Ballesteros, LCSW is one of 3,200 clinical social worker records with a practice address in Arizona. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 67% of them.

  • NPI issued2021 · 67% of these records are older, 28% newer
  • In a Medicare fileYes · 11% of these records are
  • In the CMS Doctors and Clinicians fileYes · 20% of these records are
  • Graduated2018 · median 2011 among the 648 with a school on file
  • Record last updated2025 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

777 clinical social worker records list a practice address in Phoenix

They are 777 of the 31,399 NPPES records with a practice address in Phoenix, and 3,200 clinical social worker records in Arizona.

All 3,200 in Arizona → Every provider in Phoenix → Clinical Social Worker nationwide →

The 8 clinical social worker records with the nearest ZIP codes

  1. Martha Castaneda, MSWPhoenix, AZ 850341093932121
  2. Jonathan Garcia, LCSWPhoenix, AZ 850341306462247
  3. Elaine Groppenbacher, LCSWPhoenix, AZ 850341518211986
  4. Edna JamesonPhoenix, AZ 850341811203912
  5. Jennifer McChristian, LCSWPhoenix, AZ 850341588259162
  6. Anthony Osvog, LMSWPhoenix, AZ 850341760280341
  7. Rebecca Sharman, MSW, LCSWPhoenix, AZ 850341588914865
  8. Krystle Stempien, LMSWPhoenix, AZ 850341154912624

Common questions

What is Zulema C. Guerrero Ballesteros, LCSW's NPI number?

Zulema C. Guerrero Ballesteros, LCSW's National Provider Identifier (NPI) is 1790377893, issued on Feb 9, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Zulema C. Guerrero Ballesteros, LCSW located?

The NPPES record lists a practice address at 4600 E Washington St Ste 300, Phoenix, AZ, 85034. Phone: (646) 450-7748. Providers update this record themselves, so call before visiting.

How can I verify Zulema C. Guerrero Ballesteros, LCSW's license?

NPPES lists Arizona license number LCSW-21780, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.