Margaret Joanna Black, M.D.
Family Medicine Physician · Portland, OR
Margaret Joanna Black, M.D. is a family medicine physician with a practice address in Portland, Oregon, and NPI 1659699528, issued on May 17, 2010. Check the license (Oregon MD189000, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Margaret Joanna Black
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD189000 OR
Self-reported in NPPES; status is on the state search - Practice location
- 5330 NE Glisan St Ste 100, Portland, OR 97213
- Phone
- (503) 215-9700
- Enumerated
- May 17, 2010
- Record last updated
- Feb 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180828000858); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2015
- 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 5330 NE Glisan St Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Adam Rosenfeld, MDDermatology Physician1275111296
Verify Margaret Joanna Black in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD189000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average family medicine physician in 2024
1,845 Medicare Part D claims for 128 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 136 claims were for opioids.
Most prescribed
- Levothyroxine Sodium111 claims
- Atorvastatin Calcium97 claims
- Omeprazole79 claims
- Amlodipine Besylate72 claims
- Lisinopril71 claims
- Hydrocodone-Acetaminophen59 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 OregonPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Joanna Black among 2,847 family medicine physician records in Oregon
Margaret Joanna Black, 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 2010, is newer than 62% of them.
- NPI issued2010 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2015 · 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).
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
- James Buxman, MDPortland, OR 972131386673887
- James Carlisle, MDPortland, OR 972131083644660
- Laura Donaghu, MDPortland, OR 972131952331795
- Staci Eskesen, MDPortland, OR 972131689629628
- Hui-Ning Fung, M.D.Portland, OR 972131164408068
- Richard Gibson, MDPortland, OR 972131508804477
- Mindy Loebner, MDPortland, OR 972131841226438
- Molly Moran-Yandle, M.D.Portland, OR 972131538134580
Common questions
What is Margaret Joanna Black, M.D.'s NPI number?
Margaret Joanna Black, M.D.'s National Provider Identifier (NPI) is 1659699528, issued on May 17, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Joanna Black, M.D. located?
The NPPES record lists a practice address at 5330 NE Glisan St Ste 100, Portland, OR, 97213. Phone: (503) 215-9700. Providers update this record themselves, so call before visiting.
How can I verify Margaret Joanna Black, M.D.'s license?
NPPES lists Oregon license number MD189000, 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 Margaret Joanna Black, M.D. prescribe under Medicare Part D?
In 2024, Margaret Joanna Black, M.D. had 1,845 Medicare Part D claims for 128 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.