Maribeth Theresa Duffy, MD
Family Medicine Physician · Tacoma, WA
Maribeth Theresa Duffy, MD is a family medicine physician with a practice address in Tacoma, Washington, and NPI 1770669657, issued on Oct 31, 2006. Check the license (Washington MD37453, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Maribeth Theresa Duffy
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD37453 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9040-A Jackson Ave Suite B, Tacoma, WA 98431
- Phone
- (253) 968-0770
- Enumerated
- Oct 31, 2006
- Record last updated
- Nov 15, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20071106000523); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Verify Maribeth Theresa Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD37453Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family medicine physician in 2024
228 Medicare Part D claims for 161 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass27 claims
- Albuterol Sulfate Hfa21 claims
- Prednisone19 claims
- Cephalexin16 claims
- Mupirocin15 claims
- Azithromycin12 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 WashingtonOlympia, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maribeth Theresa Duffy among 5,534 family medicine physician records in Washington
Maribeth Theresa Duffy, MD is one of 5,534 family medicine physician records with a practice address in Washington. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1992 · median 2009 among the 3,294 with a school on file
- Record last updated2019 · 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
363 family medicine physician records list a practice address in Tacoma
They are 363 of the 13,715 NPPES records with a practice address in Tacoma, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Tacoma → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Hillary Arnold, D.O.Tacoma, WA 984311457340333
- Muhammad Ayub, MDTacoma, WA 984311386641694
- Gary Clark, MDTacoma, WA 984311205816543
- John Edwards, M.D., MPHTacoma, WA 984311366412983
- Diane Flynn, MDTacoma, WA 984311326028358
- Camille Gardner-Beasley, M.D.Joint Base Lewis McChord, WA 984311548246085
- Matthew Gervais, MDTacoma, WA 984311790760395
- Victoria Hughes, D.O.Tacoma, WA 984311891760856
Common questions
What is Maribeth Theresa Duffy, MD's NPI number?
Maribeth Theresa Duffy, MD's National Provider Identifier (NPI) is 1770669657, issued on Oct 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maribeth Theresa Duffy, MD located?
The NPPES record lists a practice address at 9040-A Jackson Ave Suite B, Tacoma, WA, 98431. Phone: (253) 968-0770. Providers update this record themselves, so call before visiting.
How can I verify Maribeth Theresa Duffy, MD's license?
NPPES lists Washington license number MD37453, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Maribeth Theresa Duffy, MD prescribe under Medicare Part D?
In 2024, Maribeth Theresa Duffy, MD had 228 Medicare Part D claims for 161 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.