GRISSET RIVERA DIAZ M.D.
NPI 1235361999
Pediatrics in Sugar Land, TX

Q: What is Grisset Rivera Diaz's NPI number?

The NPI number for Grisset Rivera Diaz is 1235361999. It was assigned to this individual provider in the NPPES registry on August 13, 2009.

Q: What is Grisset Rivera Diaz's specialty?

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

Active since August 13, 2009PECOS Enrolled

15551 SOUTHWEST FWY, SUGAR LAND, TX 77478(281) 325-1010 Get Directions Write a Review

NPPES record last updated: March 21, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Grisset Rivera Diaz M.d. NPPES

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

GRISSET RIVERA DIAZ M.D. (NPI 1235361999) is an individual pediatrics provider in Sugar Land, Texas, licensed in Texas (P3965) and active in the NPI registry since August 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1235361999

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameGRISSET RIVERA DIAZCredential: M.D.

Location Address15551 SOUTHWEST FWYSugar Land, TX 77478-3830

Mailing Address15551 Southwest FwySugar Land, TX 77478-3830 · (281) 325-1010

Phone(281) 325-1010

Sole ProprietorNo

Enumeration DateAugust 13, 2009

Last NPPES UpdateMarch 21, 2013

✔ NPI 1235361999 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

Licenses✔ Licensed in TX · P3965✔ Licensed in FL · ME113359

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.

15551 SOUTHWEST FWY, Sugar Land, TX 77478

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Grisset Rivera Diaz 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 Reassignment

Medicare enrollment records show Grisset Rivera Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Adventist Health System/Sunbelt, Inc

793 mi

Urgent Care

11826 STATE ROAD 54
Odessa, FL 33556

Reassigned Medicare billing, Florida enrollment
284 clinicians in this Medicare group

NPI 1144835182 (407) 200-2300

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 77478 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 12

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

ADRIANA GUERRERO NP-C

Nurse Practitioner (Family)