DR. ERNESTO RUIZ-HUIDOBRO MD
NPI 1790730273
Allergy & Immunology in Southlake, TX

Q: What is Ernesto Ruiz-huidobro's NPI number?

The NPI number for Ernesto Ruiz-huidobro is 1790730273. It was assigned to this individual provider in the NPPES registry on May 23, 2006.

Q: What is Ernesto Ruiz-huidobro's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Active since May 23, 2006PECOS EnrolledAccepts Medicare Assignment

900 E SOUTHLAKE BLVD STE 300, SOUTHLAKE, TX 76092(817) 421-0770(817) 421-4759 Get Directions Write a Review

NPPES record last updated: January 9, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 3, 2022, Oct 24, 2022, Dec 21, 2021 and 1 more (4 updates tracked since 2021).

On this page

About Dr. Ernesto Ruiz-huidobro Md NPPES

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

DR. ERNESTO RUIZ-HUIDOBRO MD (NPI 1790730273) is an individual allergy & immunology provider in Southlake, Texas, licensed in Texas (K2579) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Fort Worth, and is a graduate of Other (1990).

NPPES Registry Identity

NPI1790730273

Entity TypeIndividualMale

Primary Taxonomy207K00000X

Provider Legal NameDR. ERNESTO RUIZ-HUIDOBROCredential: MD

Location Address900 E SOUTHLAKE BLVD STE 300Southlake, TX 76092-6376

Mailing Address900 E Southlake Blvd Ste 300Southlake, TX 76092-6376 · (817) 421-0770 · Fax (817) 421-4759

Phone(817) 421-0770

Fax(817) 421-4759

Sole ProprietorNo

Medical School CMSOtherGraduated 1990

Enumeration DateMay 23, 2006

Last NPPES UpdateJanuary 9, 20244 updates tracked since enumeration

NPPES CertifiedJanuary 9, 2024

✔ NPI 1790730273 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians

Taxonomy Code207K00000X

License✔ Licensed in TX · K2579

Definition

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

Also ListedPediatricsTaxonomy 208000000X · License K2579 (TX)

900 E SOUTHLAKE BLVD STE 300, Southlake, TX 76092

Open in Google Maps ↗

Secondary Practice Location 1

Location 13349 Golden Triangle BlvdFort Worth, TX 76177-7165 · Phone (817) 421-0770 · Fax (817) 562-5008

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Cigna 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 and accepts Medicare assignment

Dr. Ernesto Ruiz-huidobro Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8123098639

PECOS Enrollment IDI20220726003932

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 Ernesto Ruiz-huidobro reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Texas Regional Asthma & Allergy Center

1.6 mi

Allergy

900 E SOUTHLAKE BLVD, STE 300
Southlake, TX 76092

Reassigned Medicare billing, Texas enrollment
3 clinicians in this Medicare group

NPI 1568545739 (817) 421-0770

Ssm Health Care St. Louis

536 mi

Emergency Medicine

500 MEDICAL DR
Wentzville, MO 63385

Reassigned Medicare billing, Missouri enrollment
741 clinicians in this Medicare group

NPI 1588618755 (636) 327-1117

Maria D Sabio, MD, PC

542 mi

Allergy

816 S KIRKWOOD RD, SUITE 200
Kirkwood, MO 63122

Reassigned Medicare billing, Missouri enrollment
2 clinicians in this Medicare group

NPI 1376766642 (314) 821-2100

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

Areas of Expertise CMS Part B claims 15

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, tezepelumab-ekko, 1 mg J2356

Tezepelumab-ekko is a medication given via injection to help manage severe asthma. It works by blocking a specific protein in your body that triggers asthma symptoms. This injection is typically administered under medical supervision.

11,761 services11 patients

Injection, omalizumab, 5 mg J2357

Omalizumab is a medication given via injection. It's used to treat severe allergic asthma and chronic hives when other treatments fail. The 5mg dose is determined by your doctor based on your weight and condition.

9,382 services19 patients

Test for allergy using allergenic extract 95004

An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.

4,368 services76 patients

Professional service for preparation and provision of 1 or more antigens 95165

This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.

1,904 services42 patients

Test for allergy using allergenic extract injected into skin 95024

An allergy skin test involves injecting a small amount of allergenic extract into your skin. This test helps determine if you're allergic to specific substances. If allergic, a small red bump appears at the test site. It's safe and quick.

1,261 services73 patients

Professional service for multiple injections of allergen 95117

The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.

443 services32 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

357 services28 patients

Professional service for single injection of allergen 95115

A single allergen injection is a procedure where a small amount of a specific allergen is injected into your body. This is done to test your body's reaction to the allergen or to help your immune system become less sensitive to it, reducing allergic symptoms.

282 services17 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

244 services154 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

125 services125 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

114 services75 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

96 services81 patients

Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle 96401

This procedure involves giving anti-cancer drugs, which don't contain hormones, into the muscle or under the skin. These drugs help to stop the growth of cancer cells. The process is usually quick and done by a healthcare professional.

79 services20 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

19 services18 patients

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

Albuterol and ipratropium bromide are medications used to help you breathe more easily. They work by relaxing your airways and increasing airflow to your lungs. These FDA-approved drugs are administered through a device called DME (Durable Medical Equipment) which ensures accurate dosage.

17 services15 patients

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Arformoterol, inhalation solution, fda approved final product, non-compounded, administered through dme, unit dose form, 15 micrograms J7605

DME-Drugs Administered Through DME · category DG006N

1 supplier16 claims960 services$4.62 avg. paid by Medicare

Budesonide, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose form, up to 0.5 mg J7626

DME-Drugs Administered Through DME · category DG000N

2 suppliers18 claims1,200 services$0.80 avg. paid by Medicare

Revefenacin inhalation solution, fda-approved final product, non-compounded, administered through dme, 1 microgram J7677

DME-Drugs Administered Through DME · category DG006N

1 supplier17 claims89,250 services$0.15 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

4 suppliers18 claims18 services$26.03 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

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

HAYLEE REBECCA HAUSER PA-C

Physician Assistant

900 E SOUTHLAKE BLVD STE 300
SOUTHLAKE, TX 76092

Tarrant County (817) 421-0770

ALISHA DIANE DIAZ

Allergy & Immunology

900 E SOUTHLAKE BLVD STE 300
SOUTHLAKE, TX 76092

Tarrant County (817) 421-0770

ALAYNA POWERS NP

Nurse Practitioner

900 E SOUTHLAKE BLVD STE 300
SOUTHLAKE, TX 76092

Tarrant County (817) 421-0770

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 Ernesto Ruiz-huidobro's NPI number?

The NPI number for Ernesto Ruiz-huidobro is 1790730273. It was assigned to this individual provider in the NPPES registry on May 23, 2006.

Where is Ernesto Ruiz-huidobro located?

Ernesto Ruiz-huidobro practices at 900 E Southlake Blvd Ste 300, Southlake, TX 76092. The listed phone number is (817) 421-0770.

What is Ernesto Ruiz-huidobro's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Ernesto Ruiz-huidobro enrolled in Medicare?

Yes. Ernesto Ruiz-huidobro is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ernesto Ruiz-huidobro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ernesto Ruiz-huidobro reassigns Medicare benefits to 3 organizations: Texas Regional Asthma & Allergy Center (Southlake, TX), Ssm Health Care St. Louis (Wentzville, MO) and Maria D Sabio, MD, PC (Kirkwood, MO). 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 Ernesto Ruiz-huidobro's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Ernesto Ruiz-huidobro accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Cigna Healthcare and UnitedHealthcare list Ernesto Ruiz-huidobro 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 Ernesto Ruiz-huidobro was last updated on January 9, 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.