Physician Profile
Unclaimed ProfileAbout CAO
William Cao, MD is a hospitalist based in Santa Cruz, CA. William is a 1996 graduate of Medical College of Wisconsin. William is also listed as specializing in family medicine. Medicare claims data shows William provided 563 services to 308 patients.
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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (831) 452-5670
- Email not available
Practice Locations
1661 SOQUEL DR STE D
Santa Cruz, CA 95065
Procedures Most Often Billed to Medicare
563 services · 308 patients · 4 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
393 |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
99 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
43 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
28 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other hospitalists at this location 8
Same specialty, same street address — most likely the same department or group.
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 hospitalists in Santa Cruz 6
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Medical College of Wisconsin 8
Other providers in the same specialty who trained at the same institution.
Class of 1996 at Medical College of Wisconsin 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Cao specialize in?
Dr. Cao is a hospitalist in Santa Cruz, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “HOSPITALIST”.
NPI registry
Where is Dr. Cao located?
Dr. Cao is listed at 1661 SOQUEL DR STE D, Santa Cruz, CA 95065. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Cao's phone number?
The number on file is (831) 452-5670. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Cao?
Dr. Cao's National Provider Identifier is 1932189529. 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
Where did Dr. Cao go to medical school?
Dr. Cao attended Medical College of Wisconsin, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Cao have?
Dr. Cao has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Cao do most often?
According to Medicare billing data, Dr. Cao the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Cao's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Cao. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.