DR. PATRICK ROY AGUILAR MD
NPI 1891011862
Internal Medicine - Pulmonary Disease in Saint Louis, MO

Q: What is Patrick Aguilar's NPI number?

The NPI number for Patrick Aguilar is 1891011862. It was assigned to this individual provider in the NPPES registry on April 15, 2010.

Q: What is Patrick Aguilar's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Patrick Aguilar was last updated on April 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 April 15, 2010PECOS EnrolledAccepts Medicare Assignment

1 BARNES JEWISH HOSPITAL PLZ, DIV IM PULMONARY AND CRITICAL CARE MEDICINE, SAINT LOUIS, MO 63110(314) 454-8917(314) 454-7524 Get Directions Write a Review

NPPES record last updated: April 15, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 7, 2023, Aug 10, 2021, Oct 26, 2017 and 1 more (4 updates tracked since 2016).

On this page

About Dr. Patrick Roy Aguilar Md NPPES

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

DR. PATRICK ROY AGUILAR MD (NPI 1891011862) is an individual pulmonary disease provider in Saint Louis, Missouri, licensed in Missouri (2013020278) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of University Of Texas Medical Branch At Galveston (2010).

NPPES Registry Identity

NPI1891011862

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameDR. PATRICK ROY AGUILARCredential: MD

Location Address1 BARNES JEWISH HOSPITAL PLZ, DIV IM PULMONARY AND CRITICAL CARE MEDICINESaint Louis, MO 63110-1003

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 454-8917 · Fax (314) 454-7524

Phone(314) 454-8917

Fax(314) 454-7524

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 2010

Enumeration DateApril 15, 2010

Last NPPES UpdateApril 15, 20254 updates tracked since enumeration

NPPES CertifiedJune 7, 2023

✔ NPI 1891011862 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in MO · 2013020278

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 2013020278 (MO)

1 BARNES JEWISH HOSPITAL PLZ, Saint Louis, MO 63110

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Other Identifiers 1

Medicaid200048012MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cox HealthPlans, Sendero Health Plans, Local Nonprofit, UnitedHealthcare.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. Patrick Roy Aguilar 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 ID6608005202

PECOS Enrollment IDI20150209000237

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 Patrick Aguilar reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Washington University

0.7 mi

Multi-Specialty

660 S EUCLID AVE
Saint Louis, MO 63110

Reassigned Medicare billing, Missouri enrollment
Also billed through NPI 1528005642 (Missouri)
1,133 clinicians in this Medicare group

NPI 1992746903 (314) 747-5192

Endeavor Health Medical Group

274 mi

Allergy & Immunology

1000 CENTRAL ST
Evanston, IL 60201

Reassigned Medicare billing, Illinois enrollment
4,841 clinicians in this Medicare group

NPI 1497701882 (847) 570-5235

Tmh Physician Associates PLLC

681 mi

Ophthalmology

6550 FANNIN ST, SUITE 447
Houston, TX 77030

Reassigned Medicare billing, Texas enrollment
2,407 clinicians in this Medicare group

NPI 1275779225 (713) 441-7389

Seton Family Of Doctors

708 mi

Family Medicine

3001 PALM WAY, D1 : 134-138
Austin, TX 78758

Reassigned Medicare billing, Texas enrollment
1,188 clinicians in this Medicare group

NPI 1225644065 (512) 324-5938

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 12

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

110 services65 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.

93 services69 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

86 services48 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

76 services76 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

76 services76 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.

73 services73 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.

58 services58 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

39 services39 patients

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

34 services29 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.

20 services20 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.

18 services18 patients

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

12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number260032

LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

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 20

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

DR. MARGARET LEIGHTON MCNAIRY MD

Hospitalist

1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1700

MS. CHERYL ANNE WOOLSEY PA

Physician Assistant

1 BARNES JEWISH HOSPITAL PLZ, DIV IM MEDICAL ONCOLOGY
SAINT LOUIS, MO 63110

St. Louis City (314) 747-1171

ANNA RABINOV ANNA RABINOV

Obstetrics & Gynecology

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

St. Louis City (314) 747-3000

MRS. MICHELLE MARIE BLOOM ACNP

Nurse Practitioner (Acute Care)

1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110

St. Louis City (800) 862-9980

DR. FARIS ADAM BAKEER MD

Hospitalist

1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1700

DR. REHAN RAIS MD

Hospitalist

1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1700

DR. RANDY OLIVIER LAINE MD

Hospitalist

1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1700

DR. BRADLEY SETH KUSHNER MD

Surgery

1 BARNES JEWISH HOSPITAL PLZ, DIV SURG VASCULAR
SAINT LOUIS, MO 63110

St. Louis City (314) 273-7373

MS. KELSEY ELISE FOGUS CRNA

Nurse Anesthetist, Certified Registered

1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110

St. Louis City (800) 862-9980

DR. YAMAN GHASSAN MKHAIMER MD

Hospitalist

1 BARNES JEWISH HOSPITAL PLZ, DIV IM HOSPITALIST
SAINT LOUIS, MO 63110

St. Louis City (314) 362-1700

MS. CLAIRA J SOUSA CRNA

Nurse Anesthetist, Certified Registered

1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110

St. Louis City (800) 862-9980

ADRIENNE VIRGINIA VISANI

Student in an Organized Health Care Education/Training Program

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

St. Louis City (314) 747-3000

ALEX RICHARD MD

Student in an Organized Health Care Education/Training Program

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

St. Louis City (314) 747-3000

DIVYA SHARMA DIVYADARSHINI MD

Internal Medicine (Nephrology)

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

St. Louis City (314) 362-9096

CHRISTINA EDDINS MOTR/L

Occupational Therapist

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

St. Louis City (314) 747-3000

ARIANNA ROTH BARNES

Clinical Nurse Specialist (Critical Care Medicine)

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

St. Louis City (314) 400-0606

RACHEL SMIGELSKI-THEISS MSN, RN, ACCNS-AG

Clinical Nurse Specialist (Medical-Surgical)

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

St. Louis City (314) 738-1457

DR. NGUYET M NGUYEN MD

Internal Medicine (Pulmonary Disease)

1 BARNES JEWISH HOSPITAL PLZ, DEPT INTERNAL MEDICINE
SAINT LOUIS, MO 63110

St. Louis City (314) 747-3000

MR. AARON M WEINZETTEL CRNA

Nurse Anesthetist, Certified Registered

1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63110

St. Louis City (800) 862-9980

DR. VORACHART AUETHAVEKIAT MD

Internal Medicine (Hematology)

1 BARNES JEWISH HOSPITAL PLZ, DIV IM HEMATOLOGY
SAINT LOUIS, MO 63110

St. Louis City (314) 362-7216

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 Patrick Aguilar's NPI number?

The NPI number for Patrick Aguilar is 1891011862. It was assigned to this individual provider in the NPPES registry on April 15, 2010.

Where is Patrick Aguilar located?

Patrick Aguilar practices at 1 Barnes Jewish Hospital Plz Div Im Pulmonary And Critical Care Medicine, Saint Louis, MO 63110. The listed phone number is (314) 454-8917.

What is Patrick Aguilar's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Patrick Aguilar enrolled in Medicare?

Yes. Patrick Aguilar 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 Patrick Aguilar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Aguilar reassigns Medicare benefits to 4 organizations: Washington University (Saint Louis, MO), Endeavor Health Medical Group (Evanston, IL), Tmh Physician Associates PLLC (Houston, TX) and Seton Family Of Doctors (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 Patrick Aguilar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Patrick Aguilar accept?

Health plans from Cox HealthPlans, Sendero Health Plans, Local Nonprofit and UnitedHealthcare list Patrick Aguilar 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.

Is Patrick Aguilar affiliated with any hospitals?

According to CMS data, Patrick Aguilar is affiliated with Barnes Jewish Hospital.

When was this NPI record last updated?

The NPPES record for Patrick Aguilar was last updated on April 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.