Will Tseng, M.D.
NPI 1013176213 · Critical Care Medicine (Internal Medicine) Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Will Tseng, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in San Jose, CA (NPI 1013176213).
Provider details
- NPI number
- 1013176213
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A105896 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,735 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| 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 | 373 | $19 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 322 | $217 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 274 | $155 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 159 | $77 |
| Test to Determine Lung Volumes Using Sensors94726 | 157 | $75 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 144 | 25 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 100 | 44 |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 97 | 24 |
| Tiotropium Br/Olodaterol Hclbrand: Stiolto Respimat | 59 | 11 |
| Budesonide/Glycopyr/Formoterolbrand: Breztri Aerosphere | 47 | — |
| Budesonide/Formoterol Fumaratebrand: Symbicort | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$456 across 16 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-03
- Last updated
- 2016-08-18
Frequently asked questions
- What is Will Tseng's NPI number?
- Will Tseng's National Provider Identifier (NPI) is 1013176213, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Will Tseng's specialty?
- Will Tseng is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Will Tseng located?
- Will Tseng's practice location on file with NPPES is 2520 Samaritan Dr, San Jose, CA 95124-4106.
- What is Will Tseng's phone number?
- The practice phone number listed in the NPPES registry for Will Tseng is (408) 356-8400.
- Does Will Tseng accept Medicare?
- Will Tseng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Will Tseng's NPI active?
- Yes — Will Tseng's NPI (1013176213) is active in the NPPES registry as of the last update on 2016-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.