Jiwu Sun, MD
NPI 1619104270 · Hospitalist Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jiwu Sun, MD is a Hospitalist Physician provider in Mountain View, CA (NPI 1619104270).
Provider details
- NPI number
- 1619104270
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A106681 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
945 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 315 | $183 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 176 | $84 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 165 | $126 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 157 | $130 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 37 | $87 |
| Critical Care, First 30-74 Minutes99291 | 34 | $182 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 246 | 66 |
| Amlodipine Besylate | 183 | 61 |
| Lisinopril | 128 | 51 |
| Pantoprazole Sodium | 77 | 24 |
| Furosemide | 71 | 28 |
| Metformin Hcl | 70 | 33 |
| Simvastatin | 67 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-22
- Last updated
- 2018-01-22
Frequently asked questions
- What is Jiwu Sun's NPI number?
- Jiwu Sun's National Provider Identifier (NPI) is 1619104270, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jiwu Sun's specialty?
- Jiwu Sun is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Jiwu Sun located?
- Jiwu Sun's practice location on file with NPPES is 1902 Rock St, Mountain View, CA 94043-2567.
- What is Jiwu Sun's phone number?
- The practice phone number listed in the NPPES registry for Jiwu Sun is (831) 636-5711.
- Does Jiwu Sun accept Medicare?
- Jiwu Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jiwu Sun's NPI active?
- Yes — Jiwu Sun's NPI (1619104270) is active in the NPPES registry as of the last update on 2018-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.