Sudarsan Kollimuttathuillam, MD
NPI 1902324528 · Hematology & Oncology Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sudarsan Kollimuttathuillam, MD is a Hematology & Oncology Physician provider in Irvine, CA (NPI 1902324528).
Provider details
- NPI number
- 1902324528
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A169385 (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
8 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,072 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 | 456 | $110 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 152 | $79 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 149 | $160 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 59 | $16 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 50 | $18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Relugolixbrand: Orgovyx | 44 | 14 |
| Apixabanbrand: Eliquis | 32 | — |
| Prednisone | 28 | 16 |
| Abiraterone Acetate | 21 | — |
| Zanubrutinibbrand: Brukinsa | 20 | — |
| Prochlorperazine Maleate | 20 | — |
| Anastrozole | 19 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,234 across 27 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
Additional practice locations (2)
- 2100 Main St Ste 300Huntington Beach, CA 92648-2489Phone: (714) 252-9415Fax: (714) 963-8407
- 1000 FivepointIrvine, CA 92618-2377Phone: (949) 671-4673Fax: (949) 671-4329
Registry dates
- Enumerated
- 2017-09-04
- Last updated
- 2024-05-30
- Certified
- 2024-05-30
Frequently asked questions
- What is Sudarsan Kollimuttathuillam's NPI number?
- Sudarsan Kollimuttathuillam's National Provider Identifier (NPI) is 1902324528, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sudarsan Kollimuttathuillam's specialty?
- Sudarsan Kollimuttathuillam is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Sudarsan Kollimuttathuillam located?
- Sudarsan Kollimuttathuillam's practice location on file with NPPES is 16300 Sand Canyon Ave Ste 207, Irvine, CA 92618-3712.
- What is Sudarsan Kollimuttathuillam's phone number?
- The practice phone number listed in the NPPES registry for Sudarsan Kollimuttathuillam is (949) 333-7580.
- Does Sudarsan Kollimuttathuillam accept Medicare?
- Sudarsan Kollimuttathuillam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sudarsan Kollimuttathuillam's NPI active?
- Yes — Sudarsan Kollimuttathuillam's NPI (1902324528) is active in the NPPES registry as of the last update on 2024-05-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.