Karl Gruber, MD
NPI 1619944758 · Anatomic Pathology & Clinical Pathology Physician · N Charleston, SC
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Gruber, MD is a Anatomic Pathology & Clinical Pathology Physician provider in N Charleston, SC (NPI 1619944758).
Provider details
- NPI number
- 1619944758
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 17430 (SC)
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
914 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 647 | $35 |
| Special Stained Specimen Slides to Identify Organisms Including Interpretation and Report88312 | 99 | $25 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 46 | $11 |
| Evaluation of Fine Needle Aspirate With Interpretation and Report88173 | 29 | $66 |
| Cell Examination of Specimen, Selective Cellular Enhancement Technique88112 | 26 | $26 |
| Cell Examination of Body Fluid, Smears88104 | 20 | $26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-08
- Last updated
- 2008-01-17
Frequently asked questions
- What is Karl Gruber's NPI number?
- Karl Gruber's National Provider Identifier (NPI) is 1619944758, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Gruber's specialty?
- Karl Gruber is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Gruber located?
- Karl Gruber's practice location on file with NPPES is 9330 Medical Plaza Dr, N Charleston, SC 29406-9104.
- What is Karl Gruber's phone number?
- The practice phone number listed in the NPPES registry for Karl Gruber is (843) 797-4179.
- Does Karl Gruber accept Medicare?
- Karl Gruber is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Gruber's NPI active?
- Yes — Karl Gruber's NPI (1619944758) is active in the NPPES registry as of the last update on 2008-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.