Gnanaraj Koilpillai, M.D.
NPI 1245218064 · Family Medicine Physician · Frederick, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gnanaraj Koilpillai, M.D. is a Family Medicine Physician provider in Frederick, MD (NPI 1245218064).
Provider details
- NPI number
- 1245218064
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0057285 (MD)
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
309 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) |
|---|---|---|
| Anticoagulant Management of Patient Taking Warfarin93793 | 69 | $11 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 57 | $128 |
| Assessment of Emotional Or Behavioral Problems96127 | 38 | $5 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 37 | $3 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 28 | $34 |
| Hemoglobin A1c Level83036 | 22 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hclbrand: Metformin Hcl Er | 29 | 11 |
| Warfarin Sodium | 26 | 16 |
| Tirzepatidebrand: Mounjaro | 25 | — |
| Baclofen | 18 | — |
| Dulaglutidebrand: Trulicity | 15 | — |
| Levothyroxine Sodium | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$104 across 1 record (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
- 2006-01-03
- Last updated
- 2019-07-30
Frequently asked questions
- What is Gnanaraj Koilpillai's NPI number?
- Gnanaraj Koilpillai's National Provider Identifier (NPI) is 1245218064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gnanaraj Koilpillai's specialty?
- Gnanaraj Koilpillai is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gnanaraj Koilpillai located?
- Gnanaraj Koilpillai's practice location on file with NPPES is 194 Thomas Johnson Dr, Frederick, MD 21702-4679.
- What is Gnanaraj Koilpillai's phone number?
- The practice phone number listed in the NPPES registry for Gnanaraj Koilpillai is (240) 215-6310.
- Does Gnanaraj Koilpillai accept Medicare?
- Gnanaraj Koilpillai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gnanaraj Koilpillai's NPI active?
- Yes — Gnanaraj Koilpillai's NPI (1245218064) is active in the NPPES registry as of the last update on 2019-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.