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GERALD D PEISER DO PC
NPI 1386866960
Anesthesiology in Phoenix, AZ

Active since May 03, 2007
4441 E MCDOWELL RD, SUITE 101, PHOENIX, AZ 85008(602) 273-6770(602) 889-0489 Get Directions Write a Review

NPPES record last updated: January 25, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gerald D Peiser Do Pc NPPES

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

GERALD D PEISER DO PC (NPI 1386866960) is a healthcare organization registered as an anesthesiology in Phoenix, Arizona and active in the NPI registry since May 2007. The organization lists Gerald Peiser, Owner, as its authorized official.

NPPES Registry Identity

NPI1386866960
Entity TypeOrganization
Primary Taxonomy207L00000X
Legal Business NameGERALD D PEISER DO PC
Location Address4441 E MCDOWELL RD, SUITE 101Phoenix, AZ 85008-4503
Mailing AddressPo Box 29211Phoenix, AZ 85038-9211 · (602) 273-6770 · Fax (602) 889-0489
Phone(602) 273-6770
Fax(602) 889-0489
Organization SubpartNo
Authorized OfficialGerald PeiserOwner · (602) 273-6770
Enumeration DateMay 3, 2007
Last NPPES UpdateJanuary 25, 2008
✔ NPI 1386866960 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
4441 E MCDOWELL RD, Phoenix, AZ 85008
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Other Identifiers 2

Medicare UPINH79432AZ
Medicare PINZ105081AZ

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gerald D Peiser Do Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Gerald D Peiser Do PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Gerald Peiser, D.O.
Anesthesiology
NPI 1003813643
4441 E MCDOWELL RD # 101
Phoenix, AZ 85008
(602) 273-6770
✔ PECOS✔ Accepts MedicareSame address

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 Gerald D Peiser Do PC's NPI number?

The NPI number for Gerald D Peiser Do PC is 1386866960. It was assigned to this organization in the NPPES registry on May 3, 2007.

Where is Gerald D Peiser Do PC located?

Gerald D Peiser Do PC is located at 4441 E Mcdowell Rd Suite 101, Phoenix, AZ 85008. The listed phone number is (602) 273-6770.

What is Gerald D Peiser Do PC's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Gerald D Peiser Do PC enrolled in Medicare?

Yes. Gerald D Peiser Do PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gerald D Peiser Do PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Anesthesiology) reassigns their Medicare billing to Gerald D Peiser Do 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Gerald D Peiser Do PC was last updated on January 25, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.