Gina Johnston, MD
NPI 1790759850 · Anatomic Pathology & Clinical Pathology Physician · Germantown, TN
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gina Johnston, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Germantown, TN (NPI 1790759850).
Provider details
- NPI number
- 1790759850
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 28387 (TN)
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
1,097 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) |
|---|---|---|
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 329 | $25 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 249 | $33 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 115 | $31 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 114 | $74 |
| Preparation of Tissue for Examination By Removing Any Calcium Present88311 | 96 | $11 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 79 | $10 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-15
- Last updated
- 2019-02-22
Frequently asked questions
- What is Gina Johnston's NPI number?
- Gina Johnston's National Provider Identifier (NPI) is 1790759850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gina Johnston's specialty?
- Gina Johnston is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Gina Johnston located?
- Gina Johnston's practice location on file with NPPES is 7550 Wolf River Blvd Ste 200, Germantown, TN 38138-1778.
- What is Gina Johnston's phone number?
- The practice phone number listed in the NPPES registry for Gina Johnston is (901) 542-6801.
- Does Gina Johnston accept Medicare?
- Gina Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gina Johnston's NPI active?
- Yes — Gina Johnston's NPI (1790759850) is active in the NPPES registry as of the last update on 2019-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.