Robert Gruhl, MD
NPI 1962909549 · Otolaryngology Physician · Duluth, MN
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Gruhl, MD is a Otolaryngology Physician provider in Duluth, MN (NPI 1962909549).
Provider details
- NPI number
- 1962909549
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 82388-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 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
270 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 74 | $62 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 52 | $92 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 48 | $64 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 31 | $77 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 18 | $58 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
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 |
|---|---|---|
| Oxycodone Hcl | 45 | 44 |
| Ipratropium Bromide | 43 | 28 |
| Cephalexin | 42 | 40 |
| Fluticasone Propionate | 38 | 20 |
| Ofloxacin | 32 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 28 | 24 |
| Azelastine Hcl | 18 | — |
| Triamcinolone Acetonide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-10
- Last updated
- 2023-08-15
- Certified
- 2023-08-14
Frequently asked questions
- What is Robert Gruhl's NPI number?
- Robert Gruhl's National Provider Identifier (NPI) is 1962909549, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Gruhl's specialty?
- Robert Gruhl is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Gruhl located?
- Robert Gruhl's practice location on file with NPPES is 400 E 3rd St, Duluth, MN 55805-1951.
- What is Robert Gruhl's phone number?
- The practice phone number listed in the NPPES registry for Robert Gruhl is (218) 786-3233.
- Does Robert Gruhl accept Medicare?
- Robert Gruhl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Gruhl's NPI active?
- Yes — Robert Gruhl's NPI (1962909549) is active in the NPPES registry as of the last update on 2023-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.