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DR. MARIAM NASIR MD
NPI 1669000451
Pediatrics in Allen, TX

Active since March 29, 2020PECOS Enrolled
1710 N GREENVILLE AVE STE 110, ALLEN, TX 75002(682) 303-2600(682) 303-2601 Get Directions Write a Review

NPPES record last updated: February 18, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 18, 2025, Sep 17, 2024, Mar 29, 2020 (3 updates tracked since 2020).

About Dr. Mariam Nasir Md NPPES

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

DR. MARIAM NASIR MD (NPI 1669000451) is an individual pediatrics provider in Allen, Texas, licensed in Texas (U4283) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and maintains a secondary practice location in Frisco.

NPPES Registry Identity

NPI1669000451
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. MARIAM NASIRCredential: MD
Location Address1710 N GREENVILLE AVE STE 110Allen, TX 75002-8861
Mailing AddressPo Box 733784Dallas, TX 75373-3784 · (682) 885-6483 · Fax (682) 885-3113
Phone(682) 303-2600
Fax(682) 303-2601
Sole ProprietorNo
Enumeration DateMarch 29, 2020
Last NPPES UpdateFebruary 18, 20253 updates tracked since enumeration
NPPES CertifiedFebruary 18, 2025
✔ NPI 1669000451 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in TX · U4283
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.
1710 N GREENVILLE AVE STE 110, Allen, TX 75002
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Secondary Practice Location 1

Location 12840 Legacy Dr Ste 400Frisco, TX 75034-6055 · Phone (469) 200-6100

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mariam Nasir 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 Reassignment

Medicare enrollment records show Mariam Nasir reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cook Children's Physician Network
49 mi
Pediatrics
801 7TH AVE
Fort Worth, TX 76104
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Cook Childrens Physician Network
  • 1,186 clinicians in this Medicare group
NPI 1083472062 (682) 885-6483

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 75002 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
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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

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

JONATHAN TODD JOHNSON M.D.
Pediatrics
1710 N GREENVILLE AVE STE 110
ALLEN, TX 75002
Collin County (682) 303-2600

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 Mariam Nasir's NPI number?

The NPI number for Mariam Nasir is 1669000451. It was assigned to this individual provider in the NPPES registry on March 29, 2020.

Where is Mariam Nasir located?

Mariam Nasir practices at 1710 N Greenville Ave Ste 110, Allen, TX 75002. The listed phone number is (682) 303-2600.

What is Mariam Nasir's specialty?

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

Is Mariam Nasir enrolled in Medicare?

Yes. Mariam Nasir is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mariam Nasir's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mariam Nasir reassigns Medicare benefits to Cook Children's Physician Network (Fort Worth, TX). The 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 Mariam Nasir's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mariam Nasir was last updated on February 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.