DR. JOSEPH A. GASSEN M.D.
NPI 1972586006
Pediatrics in Mesa, AZ

Q: What is Joseph Gassen's NPI number?

The NPI number for Joseph Gassen is 1972586006. It was assigned to this individual provider in the NPPES registry on November 22, 2005.

Q: What is Joseph Gassen's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Joseph Gassen was last updated on August 1, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.

Active since November 22, 2005PECOS Enrolled

5131 E SOUTHERN AVE, MESA, AZ 85206(480) 833-5437(480) 833-9349 Get Directions Write a Review

NPPES record last updated: August 1, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Joseph A. Gassen M.d. NPPES

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

DR. JOSEPH A. GASSEN M.D. (NPI 1972586006) is an individual pediatrics provider in Mesa, Arizona, licensed in Arizona (47682) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1972586006

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameDR. JOSEPH A. GASSENCredential: M.D.

Location Address5131 E SOUTHERN AVEMesa, AZ 85206-2799

Mailing Address1919 E Thomas Rd Bldg 2108, 101Phoenix, AZ 85016-7710 · (602) 512-8029 · Fax (602) 512-8161

Phone(480) 833-5437

Fax(480) 833-9349

Sole ProprietorNo

Enumeration DateNovember 22, 2005

Last NPPES UpdateAugust 1, 2013

✔ NPI 1972586006 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in AZ · 47682✔ Licensed in MS · 18975

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Also ListedHospitalistTaxonomy 208M00000X · License 18975 (MS)

5131 E SOUTHERN AVE, Mesa, AZ 85206

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Other Identifiers 4

Medicare UPINI40428

Medicaid04150085MS

Medicaid009932953AL

Medicare ID-Type Unspecified370000457

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Joseph A. Gassen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Joseph Gassen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Pokroy Medical Group Of Nevada, Ltd.

281 mi

Neonatal-Perinatal Medicine

653 N TOWN CENTER DR STE 112
Las Vegas, NV 89144

Reassigned Medicare billing, Nevada enrollment
150 clinicians in this Medicare group

NPI 1992809412 (702) 733-0981

Brown, Calvanese, Cameron Ltd

617 mi

Emergency Medicine

1155 MILL ST
Reno, NV 89502

Reassigned Medicare billing, Nevada enrollment
69 clinicians in this Medicare group

NPI 1275568479 (775) 324-4040

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85206 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$85.89 typical visit price

range $55.44 – $168.60

Typical copayment $21.47 (range $13.86 – $42.15)

Most-billed visit code 99203

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ADRIANNA SALAZAR CCC-SLP

Speech-Language Pathologist