Gretchen Johns, MD
NPI 1750301172 · Clinical Pathology/Laboratory Medicine Physician · Jacksonville, FL
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gretchen Johns, MD is a Clinical Pathology/Laboratory Medicine Physician provider in Jacksonville, FL (NPI 1750301172).
Provider details
- NPI number
- 1750301172
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- ME102727 (FL)
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
19 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
17,972 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 16,273 | $9 |
| Blood Test, Clotting Time85610 | 870 | $4 |
| Blood Creatinine Level82565 | 296 | $5 |
| Automated Urinalysis Test81003 | 276 | $2 |
| Blood Glucose (sugar) Level82947 | 153 | $4 |
| Coagulation Function Screening Test With Interpretation and Report85390 | 60 | $34 |
| Coagulation Function Screening Test With Interpretation and Report |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-20
- Last updated
- 2020-10-07
- Certified
- 2020-10-07
Frequently asked questions
- What is Gretchen Johns's NPI number?
- Gretchen Johns's National Provider Identifier (NPI) is 1750301172, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Johns's specialty?
- Gretchen Johns is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gretchen Johns located?
- Gretchen Johns's practice location on file with NPPES is 4500 San Pablo Rd S, Jacksonville, FL 32224-1865.
- What is Gretchen Johns's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Johns is (904) 953-2000.
- Does Gretchen Johns accept Medicare?
- Gretchen Johns is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gretchen Johns's NPI active?
- Yes — Gretchen Johns's NPI (1750301172) is active in the NPPES registry as of the last update on 2020-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.