Barbara Yap, MD
NPI 1306881479 · Family Medicine Physician · Marysville, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Barbara Yap, MD is a Family Medicine Physician provider in Marysville, WA (NPI 1306881479).
Provider details
- NPI number
- 1306881479
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00045597 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 474 | 167 |
| Losartan Potassium | 300 | 107 |
| Amlodipine Besylate | 300 | 112 |
| Levothyroxine Sodium | 276 | 90 |
| Lisinopril | 268 | 94 |
| Hydrochlorothiazide | 209 | 69 |
| Atenolol | 178 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-20
- Last updated
- 2021-12-14
Frequently asked questions
- What is Barbara Yap's NPI number?
- Barbara Yap's National Provider Identifier (NPI) is 1306881479, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barbara Yap's specialty?
- Barbara Yap is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Barbara Yap located?
- Barbara Yap's practice location on file with NPPES is 4404 80th St Ne, Marysville, WA 98270-3427.
- What is Barbara Yap's phone number?
- The practice phone number listed in the NPPES registry for Barbara Yap is (360) 659-1231.
- Does Barbara Yap accept Medicare?
- Barbara Yap is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Barbara Yap's NPI active?
- Yes — Barbara Yap's NPI (1306881479) is active in the NPPES registry as of the last update on 2021-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.