David Tay, M.D.
NPI 1962440263 · Specialist · Fremont, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Tay, M.D. is a Specialist provider in Fremont, CA (NPI 1962440263).
Provider details
- NPI number
- 1962440263
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G63140 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
2,594 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 734 | $93 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 675 | $427 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 422 | $158 |
| Hemodialysis Procedure With Physician Evaluation90935 | 245 | $84 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 200 | $205 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 222 | 72 |
| Allopurinol | 198 | 60 |
| Doxazosin Mesylate | 179 | 51 |
| Calcitriol | 155 | 41 |
| Dapagliflozin Propanediolbrand: Farxiga | 126 | 30 |
| Losartan Potassium | 121 | 37 |
| Empagliflozinbrand: Jardiance | 117 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,070 across 50 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
- 2006-06-02
- Last updated
- 2011-05-18
Frequently asked questions
- What is David Tay's NPI number?
- David Tay's National Provider Identifier (NPI) is 1962440263, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Tay's specialty?
- David Tay is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is David Tay located?
- David Tay's practice location on file with NPPES is 39233 Liberty St, Fremont, CA 94538-1501.
- What is David Tay's phone number?
- The practice phone number listed in the NPPES registry for David Tay is (510) 795-8186.
- Does David Tay accept Medicare?
- David Tay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Tay's NPI active?
- Yes — David Tay's NPI (1962440263) is active in the NPPES registry as of the last update on 2011-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.