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Edit this profileAt a glance
- 39233 Liberty St, Fremont, CA 94538
About Dr. Tay
Listed in the NPI registry as a specialist, David Tay, M.D. practices in Fremont, CA. Medicare claims data shows David provided 2,594 services to 864 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, dialysis services, 4 or more physician visits per month (20 years or older), and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1962440263 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (510) 795-8186
- Email not available
Practice Locations
39233 LIBERTY ST
Fremont, CA 94538
Procedures Most Often Billed to Medicare
2,594 services · 864 patients · 15 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
675 | More than most peers in Specialist |
| Hemodialysis procedure with physician evaluation | Treatment | 90935 |
245 | More than most peers in Specialist |
| Dialysis services, 2-3 physician visits per month (20 years or older) | Treatment | 90961 |
42 | As often as other peers in Specialist |
| Hemodialysis procedure requiring repeated evaluation | Treatment | 90937 |
32 | Too few peers to compare |
| Dialysis services, 1 physician visit per month (20 years or older) | Treatment | 90962 |
18 | Less often than most peers in Specialist |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
734 | More often than most peers in Specialist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
422 | More often than most peers in Specialist |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
200 | More often than most peers in Specialist |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
65 | As often as other peers in Specialist |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
60 | As often as other peers in Specialist |
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 specialists at this location 1
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 specialists in Fremont 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1986 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Dialysis services, 4 or more physician visits per month (20 years or older) 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does David Tay specialize in?
David Tay is a specialist in Fremont, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is David Tay located?
David Tay is listed at 39233 Liberty St, Fremont, CA 94538. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is David Tay's phone number?
The number on file is (510) 795-8186. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for David Tay?
David Tay's National Provider Identifier is 1962440263. 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 David Tay train?
David Tay attended Other, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How much experience does David Tay have?
David Tay has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What does David Tay do most often?
According to Medicare billing data, David Tay provides treatments such as dialysis services, 4 or more physician visits per month and hemodialysis procedure with physician evaluation, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is David Tay's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by David Tay. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.