John Hau Lien M D a Professional Corporation
NPI 1538381678 · Cardiovascular Disease Physician · San Jose, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hau Lien M D a Professional Corporation is a Cardiovascular Disease Physician organization in San Jose, CA (NPI 1538381678).
Provider details
- NPI number
- 1538381678
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- John Lien, Ceo(408) 251-7900
- License
- 0G63910 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-02
- Last updated
- 2022-04-12
- Certified
- 2022-04-12
Frequently asked questions
- What is John Hau Lien M D a Professional Corporation's NPI number?
- John Hau Lien M D a Professional Corporation's National Provider Identifier (NPI) is 1538381678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John Hau Lien M D a Professional Corporation?
- John Hau Lien M D a Professional Corporation is classified in the NPPES registry as Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Hau Lien M D a Professional Corporation located?
- John Hau Lien M D a Professional Corporation's practice location on file with NPPES is 200 Jose Figueres Ave Ste 330, San Jose, CA 95116-1590.
- What is John Hau Lien M D a Professional Corporation's phone number?
- The practice phone number listed in the NPPES registry for John Hau Lien M D a Professional Corporation is (408) 251-7900.
- Does John Hau Lien M D a Professional Corporation accept Medicare?
- John Hau Lien M D a Professional Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for John Hau Lien M D a Professional Corporation?
- The authorized official listed on John Hau Lien M D a Professional Corporation's NPPES record is John Lien, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John Hau Lien M D a Professional Corporation's NPI active?
- Yes — John Hau Lien M D a Professional Corporation's NPI (1538381678) is active in the NPPES registry as of the last update on 2022-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.