Aaron Steuart Cosman, FNP
Family Nurse Practitioner · Portland, OR
Aaron Steuart Cosman, FNP is a family nurse practitioner with a practice address in Portland, Oregon, and NPI 1538558242, issued on Jan 19, 2015. Check the license (Oregon 201408265NP-PP, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Aaron Steuart Cosman
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 201408265NP-PP OR
AP60522742 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1111 NE 99TH Ave Ste 301, Portland, OR 97220
- Phone
- (503) 963-2707
- Enumerated
- Jan 19, 2015
- Record last updated
- Dec 8, 2025
- Fax
- (503) 963-2802
- Medicaid IDs
- 500681135 OR
2042037 WA - Medicare enrollment
- Enrolled (PECOS I20150123002107); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1111 NE 99TH Ave Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Debbie Cheng, MDGastroenterology Physician1730576018
- Tricia Eisenbraun, RD, LDRegistered Dietitian1558554360
- Charles GabbertGastroenterology Physician1750587945
- Ian Holmes, MDGastroenterology Physician1073933099
Verify Aaron Steuart Cosman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 201408265NP-PPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average family nurse practitioner in 2024
486 Medicare Part D claims for 219 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Pantoprazole Sodium103 claims
- Omeprazole91 claims
- Sod Sulf-Potass Sulf-Mag Sulf27 claims
- Colestipol Hcl22 claims
- Peg-3350 And Electrolytes22 claims
- Gavilyte-G19 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.
Industry payments in 2024: $25.85
1 payment: food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- The Oregon Clinic, PCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
591 family nurse practitioner records list a practice address in Portland
They are 591 of the 42,088 NPPES records with a practice address in Portland, and 2,384 family nurse practitioner records in Oregon.
All 591 in Portland → All 2,384 in Oregon → Every provider in Portland →
Other family nurse practitioner records in Oregon
- April Abaecherli-Shore, FNP-CGresham, OR1881060267
- Leslie Abbott, FNPRoseburg, OR1700217064
- Samantha Abbott, FNPMilwaukie, OR1043855257
- Tristin Accuardi, DNP-FNPAstoria, OR1366970758
- Bonita Acosta, FNPCanyonville, OR1295882512
- Melissa Adair, ARNPPortland, OR1023590197
- Erika Adams, FNP-CJohn Day, OR1174163356
- Phyllis AdjeiCorvallis, OR1699220491
- Lindsey Adkisson, DNP, FNP-BCEugene, OR1386266450
- Alyssa Anthea Adriano, DNP, FNP-C, BSN-RNPortland, OR1346727179
Common questions
What is Aaron Steuart Cosman, FNP's NPI number?
Aaron Steuart Cosman, FNP's National Provider Identifier (NPI) is 1538558242, issued on Jan 19, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Steuart Cosman, FNP located?
The NPPES record lists a practice address at 1111 NE 99TH Ave Ste 301, Portland, OR, 97220. Phone: (503) 963-2707. Providers update this record themselves, so call before visiting.
How can I verify Aaron Steuart Cosman, FNP's license?
NPPES lists Oregon license number 201408265NP-PP, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Aaron Steuart Cosman, FNP prescribe under Medicare Part D?
In 2024, Aaron Steuart Cosman, FNP had 486 Medicare Part D claims for 219 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.