Stephen Woo, D.O.
NPI 1811256449 · Family Medicine Physician · Sequim, WA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Woo, D.O. is a Family Medicine Physician provider in Sequim, WA (NPI 1811256449).
Provider details
- NPI number
- 1811256449
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- OP60527165 (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
14 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
1,998 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 | 1,106 | $95 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 509 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 192 | $65 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 100 | $129 |
| Annual Wellness Visit; Includes a Personalized Prevention Plan of Service (pps), Initial VisitG0438 | 66 | $164 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 122 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 527 | 159 |
| Levothyroxine Sodium | 329 | 94 |
| Losartan Potassium | 301 | 83 |
| Lisinopril | 260 | 82 |
| Metoprolol Succinate | 252 | 72 |
| Amlodipine Besylate | 237 | 71 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-16
- Last updated
- 2022-05-23
- Certified
- 2022-05-23
Frequently asked questions
- What is Stephen Woo's NPI number?
- Stephen Woo's National Provider Identifier (NPI) is 1811256449, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Woo's specialty?
- Stephen Woo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Woo located?
- Stephen Woo's practice location on file with NPPES is 800 N 5th Ave Ste 101, Sequim, WA 98382-3045.
- What is Stephen Woo's phone number?
- The practice phone number listed in the NPPES registry for Stephen Woo is (360) 565-0999.
- Does Stephen Woo accept Medicare?
- Stephen Woo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Woo's NPI active?
- Yes — Stephen Woo's NPI (1811256449) is active in the NPPES registry as of the last update on 2022-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.