Douglas Liou, M.D.
NPI 1891052080 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Liou, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Palo Alto, CA (NPI 1891052080).
Provider details
- NPI number
- 1891052080
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A119889 (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 tenure25% of score
14 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
547 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 262 | $215 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 89 | $259 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 57 | $193 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 49 | $164 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 25 | $204 |
| Removal of Lymph Nodes of Chest Cavity Using an Endoscope |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$757 across 15 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
- 2012-04-12
- Last updated
- 2024-04-27
- Certified
- 2024-04-27
Frequently asked questions
- What is Douglas Liou's NPI number?
- Douglas Liou's National Provider Identifier (NPI) is 1891052080, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Liou's specialty?
- Douglas Liou is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Liou located?
- Douglas Liou's practice location on file with NPPES is 300 Pasteur Dr, Palo Alto, CA 94304-2203.
- What is Douglas Liou's phone number?
- The practice phone number listed in the NPPES registry for Douglas Liou is (650) 723-4000.
- Does Douglas Liou accept Medicare?
- Douglas Liou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Liou's NPI active?
- Yes — Douglas Liou's NPI (1891052080) is active in the NPPES registry as of the last update on 2024-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.