Niraj Ajmere, M.D.
NPI 1558309856 · Gastroenterology Physician · Lisle, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Niraj Ajmere, M.D. is a Gastroenterology Physician provider in Lisle, IL (NPI 1558309856).
Provider details
- NPI number
- 1558309856
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036119583 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
713 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 136 | $130 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 72 | $9 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 66 | $83 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 56 | $120 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 50 | $100 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 226 | 72 |
| Pantoprazole Sodium | 121 | 39 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 96 | 96 |
| Famotidine | 73 | 27 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 65 | 64 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 40 | 39 |
| Dicyclomine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-02
- Last updated
- 2021-01-14
- Certified
- 2021-01-14
Frequently asked questions
- What is Niraj Ajmere's NPI number?
- Niraj Ajmere's National Provider Identifier (NPI) is 1558309856, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Niraj Ajmere's specialty?
- Niraj Ajmere is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Niraj Ajmere located?
- Niraj Ajmere's practice location on file with NPPES is 430 Warrenville Rd Ste 310, Lisle, IL 60532-1348.
- What is Niraj Ajmere's phone number?
- The practice phone number listed in the NPPES registry for Niraj Ajmere is (630) 717-2600.
- Does Niraj Ajmere accept Medicare?
- Niraj Ajmere is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Niraj Ajmere's NPI active?
- Yes — Niraj Ajmere's NPI (1558309856) is active in the NPPES registry as of the last update on 2021-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.