Tim Shen, M.D.
NPI 1134514995 · Internal Medicine Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tim Shen, M.D. is a Internal Medicine Physician provider in Fontana, CA (NPI 1134514995).
Provider details
- NPI number
- 1134514995
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A143876 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 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
23 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 23 | $212 |
Typical Medicare-allowed amounts for these services range $212–$212 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 199 | 93 |
| Tiotropium Bromidebrand: Spiriva Respimat | 125 | 38 |
| Fluticasone Propion/Salmeterolbrand: Wixela Inhub | 99 | 35 |
| Tiotropium Br/Olodaterol Hclbrand: Stiolto Respimat | 84 | 34 |
| Montelukast Sodium | 60 | 20 |
| Budesonide/Formoterol Fumaratebrand: Breyna | 48 | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-30
- Last updated
- 2021-11-29
- Certified
- 2021-09-20
Frequently asked questions
- What is Tim Shen's NPI number?
- Tim Shen's National Provider Identifier (NPI) is 1134514995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tim Shen's specialty?
- Tim Shen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tim Shen located?
- Tim Shen's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Tim Shen's phone number?
- The practice phone number listed in the NPPES registry for Tim Shen is (909) 427-4873.
- Does Tim Shen accept Medicare?
- Tim Shen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tim Shen's NPI active?
- Yes — Tim Shen's NPI (1134514995) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.