Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Hematopoietic Cell Transplantation and Cellular Therapy

James L. Slack, MD

Works at hospitals in Goodyear, AZ · Phoenix, AZ · Scottsdale, AZ · Arizona

Summary

James L. Slack, MD (Hematopoietic Cell Transplantation and Cellular Therapy) is listed by Medicare at 3 hospitals in Goodyear, AZ, Phoenix, AZ and Scottsdale, AZ. NPI 1841273588. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about James L. Slack, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Hematopoietic Cell Transplantation and Cellular TherapyPrimary specialty
YesAccepts Medicare assignment
43Years since medical school (graduated 1983)
University Of New Mexico School Of MedicineMedical school
MaleGender (as listed)
HonorHealthGroup practice

Quick answers

Which hospitals does James L. Slack work at?
Medicare's official clinician data lists James L. Slack at 3 hospitals: City of Hope Cancer Center Phoenix, Honor Health John C. Lincoln Medical Center and HonorHealth Scottsdale Shea Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does James L. Slack see patients?
Medicare's clinician data lists 1 practice location in Scottsdale, AZ. Call before your visit to confirm the address.
What is James L. Slack's specialty?
Medicare lists Hematopoietic Cell Transplantation and Cellular Therapy as the primary specialty, and also Hematology/Oncology.
Does James L. Slack accept Medicare assignment?
Yes. Medicare's clinician data says James L. Slack accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for James L. Slack?
(480) 323-1587, as listed in official Medicare / NPI Registry data.
What is James L. Slack's NPI number?
1841273588. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where James L. Slack works

Medicare's Facility Affiliation Data lists James L. Slack at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where James L. Slack is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists James L. Slack as a member of this group (CMS data updated 2026-10-02).

  • HonorHealth68 clinicians in the group

Specialties

Find other Hematopoietic Cell Transplantation and Cellular Therapy doctors in Arizona →

Other cell transplant specialists in Scottsdale

Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.

All cell transplant specialists in Scottsdale →

Clinician information

CredentialMD
Medical schoolUniversity Of New Mexico School Of Medicine
Graduation year1983
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1841273588
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians