Raj Narayani, MD
NPI 1407821200 · Gastroenterology Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Raj Narayani, MD is a Gastroenterology Physician provider in Knoxville, TN (NPI 1407821200).
Provider details
- NPI number
- 1407821200
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD38896 (TN)
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
631 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 208 | $217 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 70 | $86 |
| Study of Esophagus to Assess Movement91010 | 55 | $57 |
| Imaging of Digestive Tract Done From the Inside of the Digestive Tract91110 | 54 | $611 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 48 | $145 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High Risk |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 153 | 149 |
| Omeprazole | 134 | 56 |
| Esomeprazole Magnesium | 110 | 38 |
| Pantoprazole Sodium | 78 | 34 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 49 | 47 |
| Famotidine | 38 | 18 |
| Metoclopramide Hcl | 26 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$43,188 across 80 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
- 2006-02-23
- Last updated
- 2017-05-04
Frequently asked questions
- What is Raj Narayani's NPI number?
- Raj Narayani's National Provider Identifier (NPI) is 1407821200, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Raj Narayani's specialty?
- Raj Narayani is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Raj Narayani located?
- Raj Narayani's practice location on file with NPPES is 1311 Dowell Springs Blvd, Knoxville, TN 37909-2454.
- What is Raj Narayani's phone number?
- The practice phone number listed in the NPPES registry for Raj Narayani is (865) 588-5121.
- Does Raj Narayani accept Medicare?
- Raj Narayani is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Raj Narayani's NPI active?
- Yes — Raj Narayani's NPI (1407821200) is active in the NPPES registry as of the last update on 2017-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.