Jefferson Wen
NPI 1851825087 · Internal Medicine Physician · San Carlos, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jefferson Wen is a Internal Medicine Physician provider in San Carlos, CA (NPI 1851825087).
Provider details
- NPI number
- 1851825087
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A160266 (CA)
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
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
528 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 | 141 | $153 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 92 | $156 |
| 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 | 92 | $19 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 86 | $110 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 70 | $214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 167 | 54 |
| Amlodipine Besylate | 129 | 40 |
| Losartan Potassium | 80 | 24 |
| Tamsulosin Hcl | 71 | 21 |
| Rosuvastatin Calcium | 62 | 20 |
| Lisinopril | 60 | 18 |
| Simvastatin | 58 |
Practice location
Mailing address
Additional practice locations (1)
- 2351 Clay StSuite 380San Francisco, CA 94115-1931Phone: (415) 600-6000
Registry dates
- Enumerated
- 2017-04-13
- Last updated
- 2020-09-21
- Certified
- 2020-09-21
Frequently asked questions
- What is Jefferson Wen's NPI number?
- Jefferson Wen's National Provider Identifier (NPI) is 1851825087, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jefferson Wen's specialty?
- Jefferson Wen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jefferson Wen located?
- Jefferson Wen's practice location on file with NPPES is 301 Industrial Rd, San Carlos, CA 94070-2603.
- What is Jefferson Wen's phone number?
- The practice phone number listed in the NPPES registry for Jefferson Wen is (650) 596-4000.
- Does Jefferson Wen accept Medicare?
- Jefferson Wen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jefferson Wen's NPI active?
- Yes — Jefferson Wen's NPI (1851825087) is active in the NPPES registry as of the last update on 2020-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.