Carlos Rollhauser, MD
NPI 1407933658 · Gastroenterology Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carlos Rollhauser, MD is a Gastroenterology Physician provider in Knoxville, TN (NPI 1407933658).
Provider details
- NPI number
- 1407933658
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD37059 (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
19 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
679 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 | 163 | $92 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 132 | $232 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 97 | $87 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 66 | $85 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 46 | $63 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 557 | 185 |
| Famotidine | 395 | 131 |
| Omeprazole | 366 | 108 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 144 | 141 |
| Ondansetron Hcl | 138 | 43 |
| Rifaximinbrand: Xifaxan | 87 | 11 |
| Esomeprazole Magnesium | 77 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17,346 across 168 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
- 2006-11-01
- Last updated
- 2010-06-18
Frequently asked questions
- What is Carlos Rollhauser's NPI number?
- Carlos Rollhauser's National Provider Identifier (NPI) is 1407933658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carlos Rollhauser's specialty?
- Carlos Rollhauser is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Carlos Rollhauser located?
- Carlos Rollhauser's practice location on file with NPPES is 1928 Alcoa Highway, Knoxville, TN 37920.
- What is Carlos Rollhauser's phone number?
- The practice phone number listed in the NPPES registry for Carlos Rollhauser is (865) 305-6570.
- Does Carlos Rollhauser accept Medicare?
- Carlos Rollhauser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carlos Rollhauser's NPI active?
- Yes — Carlos Rollhauser's NPI (1407933658) is active in the NPPES registry as of the last update on 2010-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.