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WILLIAM L WEISS, MD, PC
NPI 1922138643
Internal Medicine - Nephrology in Phoenix, AZ

Active since March 06, 2007
9305 W THOMAS RD, SUITE 570, PHOENIX, AZ 85037(623) 537-5100(623) 537-5200 Get Directions Write a Review

NPPES record last updated: August 11, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About William L Weiss, Md, Pc NPPES

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

WILLIAM L WEISS, MD, PC (NPI 1922138643) is a healthcare organization registered as a nephrology in Phoenix, Arizona and active in the NPI registry since March 2007. The organization lists William Weiss, President, as its authorized official.

NPPES Registry Identity

NPI1922138643
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameWILLIAM L WEISS, MD, PC
Location Address9305 W THOMAS RD, SUITE 570Phoenix, AZ 85037-3328
Mailing AddressPo Box 6011Goodyear, AZ 85338-0617 · (623) 537-5100 · Fax (623) 537-5200
Phone(623) 537-5100
Fax(623) 537-5200
Organization SubpartNo
Authorized OfficialWilliam WeissPresident · (623) 537-5200
Enumeration DateMarch 6, 2007
Last NPPES UpdateAugust 11, 2011
✔ NPI 1922138643 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in AZ · 31284
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
9305 W THOMAS RD, Phoenix, AZ 85037
Open in Google Maps ↗

Other Identifiers 1

Medicare PINZ82746AZ

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health.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)

William L Weiss, Md, Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to William L Weiss, MD, PC, which bills Medicare for the services they deliver. Of these, 3 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Jennifer Newman, APRN, ACNP
Nurse Practitioner
NPI 1619865623
9321 W THOMAS RD STE 400
Phoenix, AZ 85037
(623) 537-5100
✔ PECOS✔ Accepts Medicare0.1 mi
William Weiss, MD, PC
Nephrology
NPI 1881686368
9321 W THOMAS RD STE 400
Phoenix, AZ 85037
(623) 537-5100
✔ PECOS✔ Accepts Medicare0.2 mi
Amer Khan, M.D.
Nephrology
NPI 1609010883
13943 N 91ST AVE STE H101
Peoria, AZ 85381
(623) 977-1331
✔ PECOS✔ Accepts Medicare9.2 mi
Claudia Velarde, M.D.
Nephrology
NPI 1861430449
1220 W 24TH ST STE 1
Yuma, AZ 85364
(928) 329-8331
✔ PECOS✔ Accepts Medicare148 mi

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

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 William L Weiss, MD, PC's NPI number?

The NPI number for William L Weiss, MD, PC is 1922138643. It was assigned to this organization in the NPPES registry on March 6, 2007.

Where is William L Weiss, MD, PC located?

William L Weiss, MD, PC is located at 9305 W Thomas Rd Suite 570, Phoenix, AZ 85037. The listed phone number is (623) 537-5100.

What is William L Weiss, MD, PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is William L Weiss, MD, PC enrolled in Medicare?

Yes. William L Weiss, MD, PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William L Weiss, MD, PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to William L Weiss, MD, PC. 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 Nephrology (3) and Nurse Practitioner (1). Of these, 3 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does William L Weiss, MD, PC accept?

Health plans from Ambetter from Arizona Complete Health list William L Weiss, MD, PC 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 William L Weiss, MD, PC was last updated on August 11, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.