Rajeev Nayar, MD
NPI 1346217023 · Gastroenterology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rajeev Nayar, MD is a Gastroenterology Physician provider in Milwaukee, WI (NPI 1346217023).
Provider details
- NPI number
- 1346217023
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036096635 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
478 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 128 | $81 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 119 | $134 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 92 | $136 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 40 | $193 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 28 | $176 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High Risk |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 243 | 129 |
| Fluconazole | 20 | 12 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 12 | — |
| Metoclopramide Hcl | 12 | — |
| Cholestyramine (with Sugar)brand: Cholestyramine | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 800 N Westmoreland Rd Ste 100Lake Forest, IL 60045-1671Phone: (847) 535-6083Fax: (847) 234-4336
Registry dates
- Enumerated
- 2006-03-02
- Last updated
- 2025-11-18
- Certified
- 2025-11-18
Frequently asked questions
- What is Rajeev Nayar's NPI number?
- Rajeev Nayar's National Provider Identifier (NPI) is 1346217023, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rajeev Nayar's specialty?
- Rajeev Nayar is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Rajeev Nayar located?
- Rajeev Nayar's practice location on file with NPPES is 2801 W Kk River Pkwy, Milwaukee, WI 53215-3669.
- What is Rajeev Nayar's phone number?
- The practice phone number listed in the NPPES registry for Rajeev Nayar is (414) 908-6500.
- Does Rajeev Nayar accept Medicare?
- Rajeev Nayar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rajeev Nayar's NPI active?
- Yes — Rajeev Nayar's NPI (1346217023) is active in the NPPES registry as of the last update on 2025-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.