LEADING HEALTHCARE, LLC
NPI 1356853691
Hospitalist in Sun City, AZ

Active since October 26, 2017CLIA 03D2290371 · Waiver
13203 N 103RD AVE STE I-5, SUN CITY, AZ 85351(623) 295-1190(602) 429-8595 Get Directions Write a Review

NPPES record last updated: February 3, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 3, 2026, Apr 2, 2025, Dec 29, 2021 and 2 more (5 updates tracked since 2017).

About Leading Healthcare, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

LEADING HEALTHCARE, LLC (NPI 1356853691) is a healthcare organization registered as a hospitalist in Sun City, Arizona and active in the NPI registry since October 2017. The organization holds a CLIA Waiver certificate valid through September 24, 2027, maintains a secondary practice location in Phoenix, and lists Mohammad Nasser, Ceo/md, as its authorized official.

NPPES Registry Identity

NPI1356853691
Entity TypeOrganization
Primary Taxonomy208M00000X
Legal Business NameLEADING HEALTHCARE, LLC
Location Address13203 N 103RD AVE STE I-5Sun City, AZ 85351-3028
Mailing AddressPo Box 163Tempe, AZ 85280-0163 · (623) 295-1190 · Fax (602) 429-8595
Fax(602) 429-8595
Organization SubpartNo
Authorized OfficialMohammad NasserCeo/md · (623) 295-1190
Enumeration DateOctober 26, 2017
Last NPPES UpdateFebruary 3, 20265 updates tracked since enumeration
NPPES CertifiedFebruary 3, 2026
✔ NPI 1356853691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in AZ · 47483
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedRegistered Nurse · EmergencyTaxonomy 163WE0003X
Also ListedFamily MedicineTaxonomy 207Q00000X
Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X
Also ListedNurse Practitioner · Acute CareTaxonomy 363LA2100X
13203 N 103RD AVE STE I-5, Sun City, AZ 85351

Secondary Practice Location 1

Location 122922 N 40th PlPhoenix, AZ 85050-8742 · Phone (236) 295-1190 · Fax (602) 457-7069

Other Identifiers 1

Medicaid354728AZ

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leading Healthcare, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

64

Medicare enrollment records show 64 clinicians reassign Medicare billing to Leading Healthcare, LLC, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 18 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Nurse Practitioner33
Internal Medicine19
Hospitalist7
Family Practice5

Nearest to this location (20)

See all 64
Internal Medicine
NPI 1154940088
13203 N 103RD AVE STE I-5
Sun City, AZ 85351
(623) 295-1190
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1760840391
13203 N 103RD AVE STE I-5
Sun City, AZ 85351
(623) 295-1190
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1144110230
13203 N 103RD AVE STE I-5
Sun City, AZ 85351
(623) 295-1190
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1992132773
9171 W THUNDERBIRD RD SUITE 101
Peoria, AZ 85381
(623) 815-7800
✔ PECOS✔ Accepts Medicare1.4 mi
Nurse Practitioner
NPI 1295113199
13060 W BELL RD
Surprise, AZ 85378
(623) 499-9100
✔ PECOS✔ Accepts Medicare4.3 mi
Internal Medicine
NPI 1508251174
5555 W THUNDERBIRD RD
Glendale, AZ 85306
(602) 865-5555
✔ PECOS✔ Accepts Medicare5.8 mi
Nurse Practitioner
NPI 1366285702
5555 W THUNDERBIRD RD
Glendale, AZ 85306
(602) 865-5555
✔ PECOS✔ Accepts Medicare5.8 mi
Family Practice
NPI 1891006532
5555 W THUNDERBIRD RD
Glendale, AZ 85306
(602) 865-2627
✔ PECOS✔ Accepts Medicare5.8 mi
Family Practice
NPI 1023458742
5555 W. THUNDERBIRD BANNER THUNDERBIRD MEDICAL CENTER
Glendale, AZ 85306
(602) 865-2627
✔ PECOS✔ Accepts Medicare5.8 mi
Nurse Practitioner
NPI 1750077665
16390 N 59TH AVE STE 200
Glendale, AZ 85306
(623) 334-4000
✔ PECOS5.8 mi
Nurse Practitioner
NPI 1801610761
14961 W BELL RD STE 175
Surprise, AZ 85374
(623) 242-9830
✔ PECOS✔ Accepts Medicare6.4 mi
Nurse Practitioner
NPI 1245738509
10705 W INDIAN SCHOOL RD
Avondale, AZ 85392
(602) 743-5458
✔ PECOS✔ Accepts Medicare7.7 mi
Nurse Practitioner
NPI 1851703862
14044 W CAMELBACK RD STE 118
Litchfield Park, AZ 85340
(235) 472-6006
✔ PECOS✔ Accepts Medicare8.1 mi
Hospitalist
NPI 1316366651
9201 W THOMAS RD
Phoenix, AZ 85037
(623) 327-4000
✔ PECOS✔ Accepts Medicare8.7 mi
Internal Medicine
NPI 1114556123
9201 W THOMAS RD
Phoenix, AZ 85037
(623) 327-7313
✔ PECOS✔ Accepts Medicare8.8 mi
Hospitalist
NPI 1104388511
9201 W THOMAS RD
Phoenix, AZ 85037
(623) 327-4000
✔ PECOS✔ Accepts Medicare8.8 mi
Internal Medicine
NPI 1285816918
9201 W THOMAS RD
Phoenix, AZ 85037
(623) 327-7313
✔ PECOS✔ Accepts Medicare8.8 mi
Nurse Practitioner
NPI 1114308632
27450 N SILVERADO RANCH RD
Peoria, AZ 85383
(402) 218-7030
✔ PECOS✔ Accepts Medicare8.9 mi
Hospitalist
NPI 1174705164
19829 N 27TH AVE ATTN: INDEPENDENT HOSPITALISTS
Phoenix, AZ 85027
(602) 406-3538
✔ PECOS✔ Accepts Medicare10 mi
Internal Medicine
NPI 1619044690
13555 W MCDOWELL RD STE 205
Goodyear, AZ 85395
(623) 295-1190
✔ PECOS✔ Accepts Medicare10 mi
See all 64 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 03D2290371

Leading Healthcare Clinic - Sun City · Sun City, AZ
Active · expires Sep 24, 2027
CLIA Number03D2290371
Laboratory TypeCommunity Clinic
Certificate Effective DateSeptember 25, 2025
Certificate Expiration DateSeptember 24, 2027
Laboratory DirectorWilliam Nassour
Laboratory Phone(602) 654-3294
Laboratory LocationLeading Healthcare Clinic - Sun City13203 N 103rd Ave Ste I-5, Sun City, AZ 85351
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leading Healthcare, LLC's NPI number?

The NPI number for Leading Healthcare, LLC is 1356853691. It was assigned to this organization in the NPPES registry on October 26, 2017.

Where is Leading Healthcare, LLC located?

Leading Healthcare, LLC is located at 13203 N 103rd Ave Ste I-5, Sun City, AZ 85351. The listed phone number is (623) 295-1190.

What is Leading Healthcare, LLC's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Leading Healthcare, LLC enrolled in Medicare?

Yes. Leading Healthcare, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Leading Healthcare, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 64 clinicians in 4 Medicare specialties reassign their Medicare billing to Leading Healthcare, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (33), Internal Medicine (19) and Hospitalist (7). Of these, 3 practice at this address and 18 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Leading Healthcare, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 03D2290371) is associated with this NPI, valid through September 24, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Leading Healthcare, LLC accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Sanford Health Plan list Leading Healthcare, LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Leading Healthcare, LLC was last updated on February 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.