2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1891011862 MD
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PATRICK AGUILAR, MD

Critical Care Medicine (Internal Medicine) Physician in SAINT LOUIS, Missouri. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
209
Medicare Part D claims · 87 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
22%
generic claims · 78% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$89.23
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: PATRICK AGUILAR, MD is a Critical Care Medicine (Internal Medicine) Physician ([object Object]) practicing in SAINT LOUIS, Missouri with a Medicare Part D prescribing footprint of 209 claims across 87 beneficiaries — 78% brand-name prescribing . Industry payments of $89.23 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: PATRICK AGUILAR, MD filed 209 Medicare Part D claims in 2023 across SAINT LOUIS, Missouri. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

PATRICK AGUILAR, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

PATRICK AGUILAR, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/15/2010

NPI 1891011862

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

209 80% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

Specialty distribution in Missouri

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Missouri providers

Missouri providers

Critical Care Medicine (Internal Medicine) Physician share within Missouri

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within Missouri

Specialty board-certification context

Estimated specialty board-certified rate — Critical Care Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Critical Care Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

PATRICK AGUILAR, MD is a Critical Care Medicine (Internal Medicine) Physician provider practicing in SAINT LOUIS, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1891011862. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

PATRICK AGUILAR, MD appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD credentials at 1 BARNES JEWISH HOSPITAL PLZ, SAINT LOUIS, MO, 63110, with a listed phone of (314) 454-8917. NPI 1891011862 was issued on 04/15/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AGUILAR most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 209 prescription claims written by this provider, covering 87 Medicare beneficiaries and totaling roughly $69K in drug spend, split 78% brand-name and 22% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

Provider Details

NPI 1891011862
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials MD
Gender Male
NPI Issued 04/15/2010

Hospital and facility affiliations

Facilities where PATRICK AGUILAR, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

WASHINGTON UNIVERSITY
SAINT LOUIS, MO

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for PATRICK AGUILAR, MD. Source: openpaymentsdata.cms.gov.

Total received

$89

Largest payer

La Jolla Pharmaceutical Company

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Brand-heavy

PATRICK AGUILAR, MD — brand share 78.0%
Specialty average (est.)

78% brand-name claims vs 22% generic, on 209 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

209
Total Claims
$69K
Total Drug Cost
87
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
275
Total Day Supply
7,493
Brand vs Generic
78% brand / 22% generic
Brand Drug Cost
$67K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
74.7 years
Avg HCC Risk Score
1.62
Gender Split
67% female / 33% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Albuterol Sulfate Hfa
Albuterol Sulfate
64
Symbicort
Budesonide/Formoterol Fumarate
20
Ventolin Hfa
Albuterol Sulfate
20
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
14
Flovent Hfa
Fluticasone Propionate
12
Fluticasone Propionate
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Critical Care Medicine (Internal Medicine) Physician Overview

How PATRICK AGUILAR, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

PATRICK AGUILAR, MD's 209 claims are below the specialty average of 1,069.

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Missouri

Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as AGUILAR.

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is PATRICK AGUILAR, MD's specialty?
PATRICK AGUILAR, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in SAINT LOUIS, Missouri. Credentials: MD.
How much does PATRICK AGUILAR, MD prescribe under Medicare Part D?
In 2023, PATRICK AGUILAR, MD wrote 209 Medicare Part D claims totaling $69K in drug costs for 87 beneficiaries.
Where is PATRICK AGUILAR, MD located?
PATRICK AGUILAR, MD is located at 1 BARNES JEWISH HOSPITAL PLZ, SAINT LOUIS, MO, 63110. Phone: (314) 454-8917.
What is PATRICK AGUILAR, MD's NPI number?
PATRICK AGUILAR, MD's National Provider Identifier (NPI) is 1891011862, issued on 04/15/2010.
Does PATRICK AGUILAR, MD prescribe more brand-name or generic drugs?
PATRICK AGUILAR, MD's prescribing is 78% brand-name and 22% generic drugs by claim count, with $67K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does PATRICK AGUILAR, MD prescribe most often?
Based on 2023 Medicare Part D data, PATRICK AGUILAR, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Symbicort, Ventolin Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does PATRICK AGUILAR, MD accept Medicare?
PATRICK AGUILAR, MD appears in CMS Medicare data with 209 Part D claims and 87 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify PATRICK AGUILAR, MD's credentials?
PATRICK AGUILAR, MD's NPI is 1891011862 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology