Physician Profile
Unclaimed ProfileAbout LIEN
John Hau Lien, MD practices cardiovascular disease (cardiology) in San Jose, CA. John is a 1987 graduate of University of California, Irvine, California College of Medicine. John is also listed as specializing in cardiovascular disease. According to Medicare claims data, John cared for 2,122 Medicare patients across 3,234 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What is Dr. Lien's specialty?
Dr. Lien is a cardiovascular disease (cardiology) in San Jose, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CARDIOVASCULAR DISEASE (CARDIOLOGY)”.
NPI registry
Where can I find Dr. Lien?
Dr. Lien is listed at 200 JOSE FIGUERES AVE #330, San Jose, CA 95116. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Lien?
The number on file is (408) 251-7900. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Lien's NPI number?
Dr. Lien's National Provider Identifier is 1932291648. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Lien's medical education?
Dr. Lien attended University of California, Irvine, California College of Medicine, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Lien been practicing?
Dr. Lien has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Lien known for?
According to Medicare billing data, Dr. Lien performs imaging including nuclear medicine study of heart muscle blood flow by pet and nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Lien confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lien. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (408) 251-7900
- Email not available
Practice Locations
200 JOSE FIGUERES AVE #330
San Jose, CA 95116
Procedures Most Often Billed to Medicare
3,234 services · 2,122 patients · 20 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Nuclear medicine study of heart muscle blood flow by pet | Imaging | 78434 |
63 |
| Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan | Imaging | 78431 |
62 |
| Nuclear medicine studies of blood flow in heart muscle at rest and with stress | Imaging | 78492 |
54 |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
39 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
291 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
242 |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | Treatment | 93015 |
154 |
| Programming of dual lead pacemaker system | Treatment | 93280 |
53 |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | Treatment | 99152 |
17 |
| Electrocardiogram (ecg) up to 30 days continuous with transmission of patient triggered events with review and report by health care professional | Treatment | 93229 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other cardiovascular diseases in San Jose 8
Same specialty, same city.
Trained at University of California, Irvine, California College of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 1987 at University of California, Irvine, California College of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Nuclear medicine study of heart muscle blood flow by pet 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.