Alicia Ahn, MD
Internal Medicine Physician · Tualatin, OR
Alicia Ahn, MD is an internal medicine physician with a practice address in Tualatin, Oregon, and NPI 1811109283, issued on May 5, 2007. Check the license (Oregon MD27759, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Alicia Ahn
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD27759 OR
Self-reported in NPPES; status is on the state search - Practice location
- 19185 SW 90TH Ave, Tualatin, OR 97062
- Phone
- (503) 885-7300
- Enumerated
- May 5, 2007
- Entity
- Type 1 · individual
Also registered at 19185 SW 90TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alicia Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD27759Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
207 Medicare Part D claims for 100 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Metoprolol Tartrate13 claims
- Potassium Chloride12 claims
- Anastrozole11 claims
- Lisinopril11 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.
43 internal medicine physician records list a Tualatin practice address
They are 43 of the 863 NPPES records with a Tualatin practice address, and 2,511 internal medicine physician records in Oregon.
All 43 in Tualatin → All 2,511 in Oregon → Every provider in Tualatin →
Other internal medicine physician records in Oregon
- Charmaine Clarisse Abalos, M.D.Medford, OR1700376050
- Soraya Abbassian, M.D.Portland, OR1225029184
- Nicholas Abbott, M.D.Tualatin, OR1124319330
- Mohamed Abdel Khalek, M.DRoseburg, OR1972687390
- Rand AbedalweliPortland, OR1265019996
- Robert Abernathy, M.D.Bend, OR1063433449
- Hazel Jane Abool, M.D.Springfield, OR1346538360
- Mohamed Aboukhashan, MDMedford, OR1932350782
- Allison Abraham, D.O.Portland, OR1831488444
- Mary Abraham, MDCorvallis, OR1073876199
Common questions
What is Alicia Ahn, MD's NPI number?
Alicia Ahn, MD's National Provider Identifier (NPI) is 1811109283, issued on May 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Alicia Ahn, MD located?
The NPPES record lists a practice address at 19185 SW 90TH Ave, Tualatin, OR, 97062. Phone: (503) 885-7300. Providers update this record themselves, so call before visiting.
How can I verify Alicia Ahn, MD's license?
NPPES lists Oregon license number MD27759, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alicia Ahn, MD prescribe under Medicare Part D?
In 2024, Alicia Ahn, MD had 207 Medicare Part D claims for 100 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.