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ARIANNA NASSIRI MD
NPI 1477907301
Pediatrics - Pediatric Emergency Medicine in Houston, TX

Active since April 18, 2016PECOS Enrolled
6621 FANNIN ST, HOUSTON, TX 77030(832) 824-1000 Get Directions Write a Review

NPPES record last updated: May 6, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 6, 2024, Dec 21, 2021 (2 updates tracked since 2021).

About Arianna Nassiri Md NPPES

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

ARIANNA NASSIRI MD (NPI 1477907301) is an individual pediatric emergency medicine provider in Houston, Texas, licensed in Texas (S0954) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1477907301
Entity TypeIndividualFemale
Primary Taxonomy2080P0204X
Provider Legal NameARIANNA NASSIRICredential: MD
Location Address6621 FANNIN STHouston, TX 77030-2358
Mailing Address6621 Fannin StHouston, TX 77030-2358 · (832) 824-1000
Phone(832) 824-1000
Sole ProprietorNo
Enumeration DateApril 18, 2016
Last NPPES UpdateMay 6, 20242 updates tracked since enumeration
NPPES CertifiedMay 6, 2024
✔ NPI 1477907301 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0204X
License✔ Licensed in TX · S0954
Definition
A pediatrician who has special qualifications to manage emergencies in infants and children.
Also ListedPediatricsTaxonomy 208000000X · License S0954 (TX)
6621 FANNIN ST, Houston, TX 77030
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Moda Health Plan, Inc., Molina Healthcare and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Arianna Nassiri Md 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

2

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

Texas Children's Physician Group
Same address
Pediatrics
6621 FANNIN ST
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Texas Childrens Physician Group
  • 2,498 clinicians in this Medicare group
NPI 1861675506 (832) 824-1000
Travis County Emergency Physicians PA
146 mi
Emergency Medicine
1201 W 38TH ST
Austin, TX 78705
  • Reassigned Medicare billing, Texas enrollment
  • 1,511 clinicians in this Medicare group
NPI 1962440933 (330) 493-4443

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

Other Providers at the Same Location NPPES 20

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

DR. TAKETO BABA M.D.
Pediatrics (Pediatric Emergency Medicine)
6621 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
ZACHARY FOUGHTY
Pediatrics (Pediatric Emergency Medicine)
6621 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1173
ASHIRA MORGAN KLEIN MD
Pediatrics (Pediatric Emergency Medicine)
6621 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
CINDY ANN MILLER PT
Physical Therapist
6621 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 826-1000
JENNA AUSTIN DAVIS PA-C
Physician Assistant
6621 FANNIN ST
HOUSTON, TX 77030
Harris County (804) 955-7043
RONALD EASLEY M.D.
Anesthesiology
6621 FANNIN ST
HOUSTON, TX 77030
Harris County (832) 824-1000
DENNIS BIER MD
Pediatrics (Pediatric Endocrinology)
6621 FANNIN ST
HOUSTON, TX 77030
Harris County (713) 798-7022
DR. DONALD WILLIAMS PARSONS M.D., PH.D.
Pediatrics (Pediatric Hematology-Oncology)
6621 FANNIN ST, MC 3-3320
HOUSTON, TX 77030
Harris County (832) 822-4556

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 Arianna Nassiri's NPI number?

The NPI number for Arianna Nassiri is 1477907301. It was assigned to this individual provider in the NPPES registry on April 18, 2016.

Where is Arianna Nassiri located?

Arianna Nassiri practices at 6621 Fannin St, Houston, TX 77030. The listed phone number is (832) 824-1000.

What is Arianna Nassiri's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Is Arianna Nassiri enrolled in Medicare?

Yes. Arianna Nassiri is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Arianna Nassiri's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Arianna Nassiri reassigns Medicare benefits to 2 organizations: Texas Children's Physician Group (Houston, TX) and Travis County Emergency Physicians PA (Austin, TX). Each 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 Arianna Nassiri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Arianna Nassiri accept?

Health plans from Baylor Scott and White Health Plan, Moda Health Plan, Inc., Molina Healthcare and Sendero Health Plans, Local Nonprofit list Arianna Nassiri 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 Arianna Nassiri was last updated on May 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.