Aristotle Gerrit Leonhard, MD
Pulmonary Disease Physician · Seattle, WA
Aristotle Gerrit Leonhard, MD is a pulmonary disease physician with a practice address in Seattle, Washington, and NPI 1871086074, issued on Jun 12, 2018. Check the license (Washington MD.MD.61291621, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Aristotle Gerrit Leonhard
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- MD.MD.61291621 WA
Self-reported in NPPES; status is on the state search - Practice location
- 325 9TH Ave, Seattle, WA 98104
- Phone
- (206) 520-5000
- Enumerated
- Jun 12, 2018
- Record last updated
- Aug 5, 2026
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 324 in Washington → Look up another NPI →
Also registered at 325 9TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Noor Aaf, PA-CMedical Physician Assistant1558394171
- Sheida Aalami, M.D.Internal Medicine Physician1730573296
- Collette AbbottHospitalist Physician1306208293
- Akrm Abdalrahman, MD, MSCritical Care Medicine (Anesthesiology) Physician1801374905
- Martin Abdo, COUNSELORCounselor1821202904
- Nauzley Abedini, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1043637408
Verify Aristotle Gerrit Leonhard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD.MD.61291621Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
143 Medicare Part D claims for 23 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 64% of claims.
Most prescribed
- Albuterol Sulfate Hfa41 claims
- Fluticasone-Salmeterol15 claims
- Spiriva Handihaler13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Aristotle Gerrit Leonhard among 324 pulmonary disease physician records in Washington
Aristotle Gerrit Leonhard, MD is one of 324 pulmonary disease physician records with a practice address in Washington. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 96% of them.
- NPI issued2018 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2026 · 72% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Washington
There are 324 pulmonary disease physician records in Washington.
All 324 in Washington → Every provider in Seattle → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Linda Anderson, M.D.Seattle, WA 981041053317222
- Jeffrey Cary, MDSeattle, WA 981041235129131
- Ann Chen, MDSeattle, WA 981041154344489
- Kristina Crothers, MDSeattle, WA 981041295718377
- Derel Finch, MDSeattle, WA 981041669469136
- David Horne, MDSeattle, WA 981041063440998
- Jon Huseby, M.D.Seattle, WA 981041285601732
- Charles Lee, MDSeattle, WA 981041659318970
Common questions
What is Aristotle Gerrit Leonhard, MD's NPI number?
Aristotle Gerrit Leonhard, MD's National Provider Identifier (NPI) is 1871086074, issued on Jun 12, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Aristotle Gerrit Leonhard, MD located?
The NPPES record lists a practice address at 325 9TH Ave, Seattle, WA, 98104. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.
How can I verify Aristotle Gerrit Leonhard, MD's license?
NPPES lists Washington license number MD.MD.61291621, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aristotle Gerrit Leonhard, MD prescribe under Medicare Part D?
In 2024, Aristotle Gerrit Leonhard, MD had 143 Medicare Part D claims for 23 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.