Chuan Fang Shih, M.D.
NPI 1578594073 · Internal Medicine Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chuan Fang Shih, M.D. is a Internal Medicine Physician provider in Fremont, CA (NPI 1578594073).
Provider details
- NPI number
- 1578594073
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A88179 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,964 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 709 | $111 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 418 | $155 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 217 | $262 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 132 | $260 |
| Administration of Influenza Virus VaccineG0008 | 95 | $34 |
| Complete Ultrasound Scan of Abdomen76700 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 66 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 598 | 221 |
| Amlodipine Besylate | 318 | 116 |
| Losartan Potassium | 243 | 85 |
| Metformin Hcl | 207 | 74 |
| Rosuvastatin Calcium | 147 | 57 |
| Alendronate Sodium | 124 | 54 |
| Valsartan | 116 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,791 across 21 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
- 2006-07-05
- Last updated
- 2016-05-25
Frequently asked questions
- What is Chuan Fang Shih's NPI number?
- Chuan Fang Shih's National Provider Identifier (NPI) is 1578594073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chuan Fang Shih's specialty?
- Chuan Fang Shih is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chuan Fang Shih located?
- Chuan Fang Shih's practice location on file with NPPES is 1860 Mowry Ave, Fremont, CA 94538-1730.
- What is Chuan Fang Shih's phone number?
- The practice phone number listed in the NPPES registry for Chuan Fang Shih is (510) 790-2202.
- Does Chuan Fang Shih accept Medicare?
- Chuan Fang Shih is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chuan Fang Shih's NPI active?
- Yes — Chuan Fang Shih's NPI (1578594073) is active in the NPPES registry as of the last update on 2016-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.