Marcia Patricia Diaz Medina, M.D.
Family Medicine Physician · Portland, OR
Marcia Patricia Diaz Medina, M.D. is a family medicine physician with a practice address in Portland, Oregon, and NPI 1467746206, issued on Jun 8, 2011. Check the license (Oregon MD166901, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marcia Patricia Diaz Medina
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD166901 OR
Self-reported in NPPES; status is on the state search - Practice location
- 8935 SE Powell Blvd, Portland, OR 97266
- Phone
- (503) 772-4335
- Enumerated
- Jun 8, 2011
- Record last updated
- Feb 4, 2022
- Fax
- (503) 772-4337
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 8935 SE Powell Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Anthony BellsmithFamily Medicine Physician1427404243
- Brook BirchardPhysician Assistant1558604611
- Elizabeth Briggs, PSY.D.Psychologist1912316407
- Laura Dean, RDN, CLT, IFNCPRegistered Dietitian1699385674
- Joseph Doherty, MSW, LCSWClinical Social Worker1073602918
Verify Marcia Patricia Diaz Medina in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD166901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% more Medicare Part D claims than the average family medicine physician in 2024
3,950 Medicare Part D claims for 314 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 242 claims were for opioids.
Most prescribed
- Atorvastatin Calcium315 claims
- Levothyroxine Sodium223 claims
- Lisinopril145 claims
- Losartan Potassium143 claims
- Amlodipine Besylate113 claims
- Hydrochlorothiazide111 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.
Marcia Patricia Diaz Medina among 2,847 family medicine physician records in Oregon
Marcia Patricia Diaz Medina, 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 2011, is newer than 65% of them.
- NPI issued2011 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2022 · 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).
561 family medicine physician records list a practice address in Portland
They are 561 of the 42,088 NPPES records with a practice address in Portland, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Portland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Marc Carey, MDPortland, OR 972661659311686
- Marietta Choe, MDPortland, OR 972661366472623
- Robert Gobbo, MDPortland, OR 972661831125566
- Melissa Hemphill, MDPortland, OR 972661801115100
- Glenn Rodriguez, MDPortland, OR 972661730110602
- Shai Rosenfeld, MDPortland, OR 972661386904837
- Evan Saulino, MDPortland, OR 972661942304464
- Thomas Schwartz, MDPortland, OR 972661346265774
Common questions
What is Marcia Patricia Diaz Medina, M.D.'s NPI number?
Marcia Patricia Diaz Medina, M.D.'s National Provider Identifier (NPI) is 1467746206, issued on Jun 8, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Marcia Patricia Diaz Medina, M.D. located?
The NPPES record lists a practice address at 8935 SE Powell Blvd, Portland, OR, 97266. Phone: (503) 772-4335. Providers update this record themselves, so call before visiting.
How can I verify Marcia Patricia Diaz Medina, M.D.'s license?
NPPES lists Oregon license number MD166901, 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 Marcia Patricia Diaz Medina, M.D. prescribe under Medicare Part D?
In 2024, Marcia Patricia Diaz Medina, M.D. had 3,950 Medicare Part D claims for 314 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.