Emerald Tay, M.D
NPI 1255331294 · Internal Medicine Physician · San Gabriel, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Emerald Tay, M.D is a Internal Medicine Physician provider in San Gabriel, CA (NPI 1255331294).
Provider details
- NPI number
- 1255331294
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- No
- License
- A72223 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
3,389 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 2,020 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 518 | $98 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 322 | $140 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 301 | $21 |
| Administration of Influenza Virus VaccineG0008 | 162 | $35 |
| Initial Preventive Physical Examination; Face-To-Face Visit, Services Limited to New Beneficiary During the First 12 Months of Medicare EnrollmentG0402 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 137 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 641 | 138 |
| Atorvastatin Calcium | 557 | 141 |
| Amlodipine Besylate | 410 | 103 |
| Omeprazole | 343 | 79 |
| Metformin Hcl | 290 | 62 |
| Icosapent Ethylbrand: Vascepa | 261 | 40 |
| Triamcinolone Acetonide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$381 across 13 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
- 2005-07-29
- Last updated
- 2016-12-21
Frequently asked questions
- What is Emerald Tay's NPI number?
- Emerald Tay's National Provider Identifier (NPI) is 1255331294, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Emerald Tay's specialty?
- Emerald Tay is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Emerald Tay located?
- Emerald Tay's practice location on file with NPPES is 222 E Valley Blvd, San Gabriel, CA 91776-3521.
- What is Emerald Tay's phone number?
- The practice phone number listed in the NPPES registry for Emerald Tay is (626) 307-8636.
- Does Emerald Tay accept Medicare?
- Emerald Tay is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Emerald Tay's NPI active?
- Yes — Emerald Tay's NPI (1255331294) is active in the NPPES registry as of the last update on 2016-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.