Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ARISTOTLE GERRIT LEONHARD MD
NPI 1871086074
Internal Medicine - Pulmonary Disease in Seattle, WA

Q: What is Aristotle Leonhard's NPI number?

The NPI number for Aristotle Leonhard is 1871086074. It was assigned to this individual provider in the NPPES registry on June 12, 2018.

Q: What is Aristotle Leonhard's specialty?

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

Active since June 12, 2018PECOS Enrolled

325 9TH AVE, SEATTLE, WA 98104(206) 520-5000 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 5, 2026, Jun 12, 2018 (2 updates tracked since 2018).

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About Aristotle Gerrit Leonhard Md NPPES

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

ARISTOTLE GERRIT LEONHARD MD (NPI 1871086074) is an individual pulmonary disease provider in Seattle, Washington, licensed in Washington (MD.MD.61291621) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Wisconsin (2018).

NPPES Registry Identity

NPI1871086074

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameARISTOTLE GERRIT LEONHARDCredential: MD

Location Address325 9TH AVESeattle, WA 98104-2420

Mailing AddressPo Box 50095Seattle, WA 98145-5095 · (206) 520-5700

Phone(206) 520-5000

Sole ProprietorNo

Medical School CMSMedical College Of WisconsinGraduated 2018

Enumeration DateJune 12, 2018

Last NPPES UpdateAugust 5, 20262 updates tracked since enumeration

NPPES CertifiedAugust 5, 2026

✔ NPI 1871086074 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in WA · MD.MD.61291621

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.

325 9TH AVE, Seattle, WA 98104

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Aristotle Gerrit Leonhard Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4284981184

PECOS Enrollment IDI20260616001611

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 98104 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

$143.76 typical visit price

range $63.67 – $189.37

Typical copayment $35.94 (range $15.91 – $47.34)

Most-billed visit code 99204

Established Patient

$111.00 typical visit price

range $21.12 – $155.00

Typical copayment $27.75 (range $5.28 – $38.75)

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.

Referred Medical Equipment & Supplies CMS DME claims 15

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

Tubing with integrated heating element for use with positive airway pressure device A4604