Monica H. Demasi, M.D.
Family Medicine Physician · Corvallis, OR
Monica H. Demasi, M.D. is a family medicine physician with a practice address in Corvallis, Oregon, and NPI 1871525303, issued on Jul 7, 2006. Check the license (Oregon MD173840, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Monica H. Demasi
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- MD173840 OR
228437 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3517 NW Samaritan Dr Ste 201, Corvallis, OR 97330
- Phone
- (541) 768-5142
- Enumerated
- Jul 7, 2006
- Record last updated
- Jul 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151026000965); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 3517 NW Samaritan Dr Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Monica H. Demasi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD173840Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
537 Medicare Part D claims for 67 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Lisinopril41 claims
- Atorvastatin Calcium39 claims
- Amlodipine Besylate30 claims
- Gabapentin19 claims
- Alendronate Sodium18 claims
- Spiriva Handihaler18 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.
Bills Medicare through one group practice
- Providence Health And Services OregonMilwaukie, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Monica H. Demasi among 2,847 family medicine physician records in Oregon
Monica H. Demasi, M.D. is one of 2,847 family medicine physician records with a practice address in Oregon. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2003 · median 2009 among the 1,671 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 family medicine physician records list a practice address in Corvallis
They are 114 of the 4,096 NPPES records with a practice address in Corvallis, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Corvallis → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Daniel Barrett, M.D.Corvallis, OR 973301386694776
- Brandi Boller, DOCorvallis, OR 973301528034683
- Kristin Bradford, M.D.Corvallis, OR 973301952304396
- Bruce Byram, M.D.Corvallis, OR 973301356391445
- Margaret Carr, M.D.Corvallis, OR 973301699714782
- Bryce Cleary, M.D.Corvallis, OR 973301063461564
- Aaron David, DOCorvallis, OR 973301548236904
- Connie Graham, M.D.Corvallis, OR 973301568404135
Common questions
What is Monica H. Demasi, M.D.'s NPI number?
Monica H. Demasi, M.D.'s National Provider Identifier (NPI) is 1871525303, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Monica H. Demasi, M.D. located?
The NPPES record lists a practice address at 3517 NW Samaritan Dr Ste 201, Corvallis, OR, 97330. Phone: (541) 768-5142. Providers update this record themselves, so call before visiting.
How can I verify Monica H. Demasi, M.D.'s license?
NPPES lists Oregon license number MD173840, 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 Monica H. Demasi, M.D. prescribe under Medicare Part D?
In 2024, Monica H. Demasi, M.D. had 537 Medicare Part D claims for 67 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.