ROBERT SAMUEL DIAZ MD
NPI 1245816727
Psychiatry & Neurology - Psychiatry in Houston, TX

Q: What is Robert Diaz's NPI number?

The NPI number for Robert Diaz is 1245816727. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Q: What is Robert Diaz's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Robert Diaz was last updated on March 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since March 23, 2021PECOS Enrolled

2800 S MACGREGOR WAY, HOUSTON, TX 77021(971) 322-6771 Get Directions Write a Review

NPPES record last updated: March 19, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 19, 2026, Jun 13, 2025, Apr 16, 2024 and 1 more (4 updates tracked since 2021).

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About Robert Samuel Diaz Md NPPES

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

ROBERT SAMUEL DIAZ MD (NPI 1245816727) is an individual psychiatry provider in Houston, Texas, licensed in Texas (V7498) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in Portland, and is a graduate of Medical College Of Wisconsin (2021).

NPPES Registry Identity

NPI1245816727

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameROBERT SAMUEL DIAZCredential: MD

Location Address2800 S MACGREGOR WAYHouston, TX 77021-1032

Mailing Address2800 S Macgregor WayHouston, TX 77021-1032 · (971) 322-6771

Phone(971) 322-6771

Sole ProprietorNo

Medical School CMSMedical College Of WisconsinGraduated 2021

Enumeration DateMarch 23, 2021

Last NPPES UpdateMarch 19, 20264 updates tracked since enumeration

NPPES CertifiedMarch 19, 2026

✔ NPI 1245816727 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in TX · V7498

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

2800 S MACGREGOR WAY, Houston, TX 77021

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Secondary Practice Location 1

Location 13181 SW Sam Jackson Park Rd L-579Portland, OR 97239 · Phone (971) 322-6771

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Robert Samuel Diaz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1355745530

PECOS Enrollment IDI20250620003283

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77021 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

$176.98 typical visit price

range $58.24 – $176.98

Typical copayment $44.24 (range $14.56 – $44.24)

Most-billed visit code 99205

Established Patient

$72.62 typical visit price

range $18.60 – $143.93

Typical copayment $18.15 (range $4.65 – $35.98)

Most-billed visit code 99213

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 20

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

DR. IRAM KAZIMI MD

Psychiatry & Neurology (Child & Adolescent Psychiatry)