Nikhil Warrier, M.D.
NPI 1538486675 · Clinical Cardiac Electrophysiology Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Cardiac Electrophysiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nikhil Warrier, M.D. is a Clinical Cardiac Electrophysiology Physician provider in Fountain Valley, CA (NPI 1538486675).
Provider details
- NPI number
- 1538486675
- Entity type
- Individual
- Primary specialty
- Clinical Cardiac Electrophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A133900 (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
16 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
6,126 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 | 1,042 | $142 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System, Remote Up to 90 Days93294 | 798 | $31 |
| Evaluation of Cardiac Rhythm Monitor System, Remote Up to 30 Days93298 | 722 | $76 |
| Evaluation of Implantable Heart and Blood Vessel Monitoring System, Remote Up to 30 Days93297 | 710 | $49 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 686 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 706 | 195 |
| Metoprolol Succinate | 535 | 158 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 193 | 81 |
| Flecainide Acetate | 178 | 53 |
| Pantoprazole Sodium | 166 | 92 |
| Rivaroxabanbrand: Xarelto | 166 | 40 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$44,241 across 184 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
- 2010-04-29
- Last updated
- 2018-06-19
Frequently asked questions
- What is Nikhil Warrier's NPI number?
- Nikhil Warrier's National Provider Identifier (NPI) is 1538486675, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nikhil Warrier's specialty?
- Nikhil Warrier is listed in the NPPES registry with a primary specialty of Clinical Cardiac Electrophysiology Physician (Allopathic & Osteopathic Physicians).
- Where is Nikhil Warrier located?
- Nikhil Warrier's practice location on file with NPPES is 18111 Brookhurst St Ste 5100, Fountain Valley, CA 92708-6728.
- What is Nikhil Warrier's phone number?
- The practice phone number listed in the NPPES registry for Nikhil Warrier is (714) 546-2238.
- Does Nikhil Warrier accept Medicare?
- Nikhil Warrier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nikhil Warrier's NPI active?
- Yes — Nikhil Warrier's NPI (1538486675) is active in the NPPES registry as of the last update on 2018-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.