Casey Elizabeth Ferguson, M.D.
Internal Medicine Physician · Portland, OR
Casey Elizabeth Ferguson, M.D. is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1447375233, issued on Mar 20, 2007. Check the license (Oregon MD27372, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Casey Elizabeth Ferguson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD27372 OR
Self-reported in NPPES; status is on the state search - Practice location
- 4805 NE Glisan St, Portland, OR 97213
- Phone
- (503) 215-2392
- Enumerated
- Mar 20, 2007
- Record last updated
- May 18, 2023
- Medicaid IDs
- 243094 OR
92075355 NM - Medicare enrollment
- Enrolled (PECOS I20080219000510); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2000
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 4805 NE Glisan St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stephanie Ahmed, MDObstetrics & Gynecology Physician1447269170
- Shaghayegh Aliabadi, M.D.Surgery Physician1083785562
- Anna Apostolou-Keith, RD, LDNRegistered Dietitian1639838790
Verify Casey Elizabeth Ferguson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD27372Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,674 Medicare Part D claims for 57 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 50 claims were for opioids.
Most prescribed
- Gabapentin93 claims
- Omeprazole73 claims
- Duloxetine Hcl66 claims
- Escitalopram Oxalate57 claims
- Levothyroxine Sodium53 claims
- Trazodone Hcl50 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Legacy Clinics LLCGresham, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Casey Elizabeth Ferguson among 2,116 internal medicine physician records in Oregon
Casey Elizabeth Ferguson, M.D. is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2000 · median 2008 among the 1,232 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Andris Antoniskis, MDPortland, OR 972131528067972
- Shikha Arun, MDPortland, OR 972131306881834
- Christopher BaronePortland, OR 972131831187657
- Ruben Halperin, MDPortland, OR 972131457306763
- Kimberly Herder, MDPortland, OR 972131811975741
- Jeffrey Horacek, MDPortland, OR 972131790721215
- Shannon Jackson, MDPortland, OR 972131558301168
- William Kennedy, DOPortland, OR 972131467431452
Common questions
What is Casey Elizabeth Ferguson, M.D.'s NPI number?
Casey Elizabeth Ferguson, M.D.'s National Provider Identifier (NPI) is 1447375233, issued on Mar 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Casey Elizabeth Ferguson, M.D. located?
The NPPES record lists a practice address at 4805 NE Glisan St, Portland, OR, 97213. Phone: (503) 215-2392. Providers update this record themselves, so call before visiting.
How can I verify Casey Elizabeth Ferguson, M.D.'s license?
NPPES lists Oregon license number MD27372, 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 Casey Elizabeth Ferguson, M.D. prescribe under Medicare Part D?
In 2024, Casey Elizabeth Ferguson, M.D. had 1,674 Medicare Part D claims for 57 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Casey Elizabeth Ferguson, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.