Maribeth Duffy, MD
NPI 1770669657 · Family Medicine Physician · Tacoma, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maribeth Duffy, MD is a Family Medicine Physician provider in Tacoma, WA (NPI 1770669657).
Provider details
- NPI number
- 1770669657
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD37453 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
397 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 159 | $126 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 109 | $91 |
| Automated Urinalysis Test81003 | 47 | $2 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 39 | $16 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 29 | $35 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 21 | 18 |
| Prednisone | 19 | 19 |
| Cephalexin | 16 | 16 |
| Mupirocin | 15 | 15 |
| Azithromycin | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-31
- Last updated
- 2019-11-15
Frequently asked questions
- What is Maribeth Duffy's NPI number?
- Maribeth Duffy's National Provider Identifier (NPI) is 1770669657, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maribeth Duffy's specialty?
- Maribeth Duffy is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maribeth Duffy located?
- Maribeth Duffy's practice location on file with NPPES is 9040-A Jackson Ave Suite B, Tacoma, WA 98431-0001.
- What is Maribeth Duffy's phone number?
- The practice phone number listed in the NPPES registry for Maribeth Duffy is (253) 968-0770.
- Does Maribeth Duffy accept Medicare?
- Maribeth Duffy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maribeth Duffy's NPI active?
- Yes — Maribeth Duffy's NPI (1770669657) is active in the NPPES registry as of the last update on 2019-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.