NPPES file of Aug 9, 2026

Christopher Slack, PHD

Counseling Psychologist · Grapevine, TX

Christopher Slack, PHD is a counseling psychologist with a practice address in Grapevine, Texas, and NPI 1407593221, issued on May 13, 2022. Check the license (Texas 38821, as entered in NPPES) with the Texas 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
1407593221
Name
Christopher Slack
Credential
PHD
Primary taxonomy
Counseling Psychologist 103TC1900X
License number
38821 TX
Self-reported in NPPES; status is on the state search
Practice location
1135 S Main St, Grapevine, TX 76051
Phone
(817) 329-5041
Enumerated
May 13, 2022
Record last updated
May 13, 2022
Medicare enrollment
Enrolled (PECOS I20220713003254); 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 counseling psychologist records → All 527 in Texas → Look up another NPI →

Also registered at 1135 S Main St

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

  1. Meghan Cromie, LPCMental Health Counselor1295306611
  2. Anna Garcia, LCSWClinical Social Worker1730990706
  3. Katherine Goodell, MS, LMFTMarriage & Family Therapist1710216668
  4. Kari Leavell, PH.D.Counseling Psychologist1750760641
  5. Delisa Perry, MS, LPC-SMental Health Counselor1417054750
  6. Abigail Powell, PH.DPsychologist1669279642

Verify Christopher Slack in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 38821    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 Texas 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 one group practice

  1. Kari Leavell, Ph.d. PLLCGrapevine, TX

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

Christopher Slack among 527 counseling psychologist records in Texas

Christopher Slack, PHD is one of 527 counseling psychologist records with a practice address in Texas. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 81% of them.

  • NPI issued2022 · 81% of these records are older, 13% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 14% of these records are
  • Graduated2020 · median 2002 among the 72 with a school on file
  • Record last updated2022 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC1900X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Counseling Psychologist providers in Texas

There are 527 counseling psychologist records in Texas.

All 527 in Texas → Every provider in Grapevine → Counseling Psychologist nationwide →

The 8 counseling psychologist records with the nearest ZIP codes

  1. Zane Dodd, PH.D.Grapevine, TX 760511588903413
  2. Peter Kahle, PSYCHOLOGISTGrapevine, TX 760511558733287
  3. Kari Leavell, PH.D.Grapevine, TX 760511750760641
  4. Betty Eitel, PH.D.Hurst, TX 760531316027477
  5. John Hesley, PH.D.Arlington, TX 760171982798559
  6. Tameka Miller, PH.D.Arlington, TX 760171437465788
  7. Susan Blanchard, LPCArlington, TX 760161801516273
  8. Dana Wicker, PSYCHOLOGISTArlington, TX 760161386801827

Common questions

What is Christopher Slack, PHD's NPI number?

Christopher Slack, PHD's National Provider Identifier (NPI) is 1407593221, issued on May 13, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Christopher Slack, PHD located?

The NPPES record lists a practice address at 1135 S Main St, Grapevine, TX, 76051. Phone: (817) 329-5041. Providers update this record themselves, so call before visiting.

How can I verify Christopher Slack, PHD's license?

NPPES lists Texas license number 38821, as entered by the provider. Search the Texas 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.