LEADING HEALTHCARE SPECIALIST PLLC
NPI 1497390561
Internal Medicine in Peoria, AZ

Active since November 13, 2019CLIA 03D2173569 · Waiver
11295 N 99TH AVE APT 5-122, PEORIA, AZ 85345(623) 295-1190(602) 429-8595 Get Directions Write a Review

NPPES record last updated: December 29, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 29, 2021, Apr 2, 2020, Nov 13, 2019 (3 updates tracked since 2019).

About Leading Healthcare Specialist Pllc NPPES

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

LEADING HEALTHCARE SPECIALIST PLLC (NPI 1497390561) is a healthcare organization registered as an internal medicine in Peoria, Arizona and active in the NPI registry since November 2019. The organization holds a CLIA Waiver certificate valid through October 14, 2027 and lists Mohammad Nasser, Ceo/md, as its authorized official.

NPPES Registry Identity

NPI1497390561
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameLEADING HEALTHCARE SPECIALIST PLLC
Location Address11295 N 99TH AVE APT 5-122Peoria, AZ 85345-5490
Mailing Address13555 W Mcdowell Rd Ste 205Goodyear, AZ 85395-2626 · (623) 295-1190 · Fax (602) 429-8595
Fax(602) 429-8595
Organization SubpartNo
Authorized OfficialMohammad NasserCeo/md · (623) 295-1190
Enumeration DateNovember 13, 2019
Last NPPES UpdateDecember 29, 20213 updates tracked since enumeration
NPPES CertifiedDecember 29, 2021
✔ NPI 1497390561 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 10

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedSpecialistTaxonomy 174400000X
Also ListedFamily MedicineTaxonomy 207Q00000X
Also ListedInternal Medicine · Infectious DiseaseTaxonomy 207RI0200X
Also ListedPhysical Medicine & RehabilitationTaxonomy 208100000X
Also ListedHospitalistTaxonomy 208M00000X
Also ListedPodiatrist · Foot & Ankle SurgeryTaxonomy 213ES0103X
Also ListedNurse Practitioner · Acute CareTaxonomy 363LA2100X
11295 N 99TH AVE APT 5-122, Peoria, AZ 85345

Other Names 1

Doing Business AsLeading Healthcare Specialist Pllc

Other Identifiers 1

Medicaid005826AZ

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 Specialist Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

29

Medicare enrollment records show 29 clinicians reassign Medicare billing to Leading Healthcare Specialist PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 10 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 8

Nurse Practitioner21
Nephrology2
Critical Care (Intensivists)1
Endocrinology1
Infectious Disease1
Internal Medicine1
Physical Medicine and Rehabilitation1
Podiatry1

Nearest to this location (20)

See all 29
Nurse Practitioner
NPI 1689392516
11295 N 99TH AVE APT 5-122
Peoria, AZ 85345
(623) 295-1190
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1821614520
11361 N 99TH AVE
Peoria, AZ 85345
(602) 636-4605
✔ PECOS✔ Accepts Medicare0.1 mi
Nurse Practitioner
NPI 1760840391
13203 N 103RD AVE STE I-5
Sun City, AZ 85351
(623) 295-1190
✔ PECOS✔ Accepts Medicare1.3 mi
Nurse Practitioner
NPI 1992132773
9171 W THUNDERBIRD RD SUITE 101
Peoria, AZ 85381
(623) 815-7800
✔ PECOS✔ Accepts Medicare1.7 mi
Infectious Disease
NPI 1336497189
5620 W THUNDERBIRD RD
Glendale, AZ 85306
(602) 795-7256
✔ PECOS✔ Accepts Medicare5.5 mi
Nurse Practitioner
NPI 1003424102
6850 W INDIAN SCHOOL RD
Phoenix, AZ 85033
(623) 469-1331
✔ PECOS✔ Accepts Medicare7.3 mi
Nurse Practitioner
NPI 1851703862
14044 W CAMELBACK RD STE 118
Litchfield Park, AZ 85340
(235) 472-6006
✔ PECOS✔ Accepts Medicare7.5 mi
Critical Care (Intensivists)
NPI 1649434887
5251 W CAMPBELL AVE STE 204
Phoenix, AZ 85031
(623) 815-7800
✔ PECOS✔ Accepts Medicare8.1 mi
Nurse Practitioner
NPI 1437964723
13555 W MCDOWELL RD STE 205
Goodyear, AZ 85395
(623) 295-1190
✔ PECOS✔ Accepts Medicare9.6 mi
Nurse Practitioner
NPI 1568203107
13555 W MCDOWELL RD STE 205
Goodyear, AZ 85395
(480) 544-1884
✔ PECOS✔ Accepts Medicare9.7 mi
Nurse Practitioner
NPI 1760038863
6036 N 19TH AVE STE 502
Phoenix, AZ 85015
(623) 738-0193
✔ PECOS✔ Accepts Medicare11 mi
Nephrology
NPI 1467666123
4202 N 20TH AVE
Phoenix, AZ 85015
(602) 264-3824
✔ PECOS✔ Accepts Medicare11 mi
Nurse Practitioner
NPI 1699516484
750 E THUNDERBIRD RD STE 1-3
Phoenix, AZ 85022
(602) 230-7373
✔ PECOS✔ Accepts Medicare12 mi
Nurse Practitioner
NPI 1558800904
3450 N 3RD ST
Phoenix, AZ 85012
(602) 257-8970
✔ PECOS✔ Accepts Medicare13 mi
Nephrology
NPI 1700086550
2545 E THOMAS RD STE 120
Phoenix, AZ 85016
(602) 419-3378
✔ PECOS✔ Accepts Medicare16 mi
Nurse Practitioner
NPI 1932933314
7575 E EARLL DR
Scottsdale, AZ 85251
(602) 501-6125
✔ PECOS✔ Accepts Medicare22 mi
Nurse Practitioner
NPI 1205678331
5527 S MITCHELL DR
Tempe, AZ 85283
(520) 409-9429
✔ PECOS✔ Accepts Medicare24 mi
Nurse Practitioner
NPI 1558907311
255 W BROWN RD
Mesa, AZ 85201
(480) 985-1093
✔ PECOS✔ Accepts Medicare27 mi
Podiatry
NPI 1639602352
3530 S VAL VISTA DR STE C101
Gilbert, AZ 85297
(602) 491-0703
✔ PECOS✔ Accepts Medicare36 mi
Physical Medicine and Rehabilitation
NPI 1538663661
8035 E BROWN RD
Mesa, AZ 85207
(623) 295-1190
✔ PECOS✔ Accepts Medicare37 mi
See all 29 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 03D2173569

Leading Healthcare Clinic · Goodyear, AZ
Active · expires Oct 14, 2027
CLIA Number03D2173569
Laboratory TypePhysician Office
Certificate Effective DateOctober 15, 2025
Certificate Expiration DateOctober 14, 2027
Laboratory DirectorWilliam Nassour
Laboratory Phone(347) 309-3320
Laboratory LocationLeading Healthcare Clinic13555 W Mcdowell Rd Ste 205, Goodyear, AZ 85395
CLIA data matches this NPI record on: Address
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 Specialist PLLC's NPI number?

The NPI number for Leading Healthcare Specialist PLLC is 1497390561. It was assigned to this organization in the NPPES registry on November 13, 2019.

Where is Leading Healthcare Specialist PLLC located?

Leading Healthcare Specialist PLLC is located at 11295 N 99th Ave Apt 5-122, Peoria, AZ 85345. The listed phone number is (623) 295-1190.

What is Leading Healthcare Specialist PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Leading Healthcare Specialist PLLC enrolled in Medicare?

Yes. Leading Healthcare Specialist PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Leading Healthcare Specialist PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 29 clinicians in 8 Medicare specialties reassign their Medicare billing to Leading Healthcare Specialist PLLC. 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 (21), Nephrology (2) and Critical Care (Intensivists) (1). Of these, 1 practice at this address and 10 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Leading Healthcare Specialist PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 03D2173569) is associated with this NPI, valid through October 14, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Leading Healthcare Specialist PLLC accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Sanford Health Plan list Leading Healthcare Specialist PLLC 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 Specialist PLLC was last updated on December 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.