Zachary Fleissner, DO
NPI 1033773494 · Anesthesiology Physician · Jacksonville, FL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Fleissner, DO is a Anesthesiology Physician provider in Jacksonville, FL (NPI 1033773494).
Provider details
- NPI number
- 1033773494
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- OS19666 (FL)
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
7 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
333 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) |
|---|---|---|
| Ultrasonic Guidance for Blood Vessel Access76937 | 52 | $13 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 43 | $43 |
| Anesthesia for Lens Surgery00142 | 29 | $69 |
| Anesthesia for Extensive Surgery on Spine00670 | 27 | $388 |
| Anesthesia for Other Closed Procedure on Chest00520 | 24 | $124 |
| Anesthesia for Other Procedure on Eye00140 | 23 | $98 |
| Anesthesia for X-Ray Or Radiation Therapy |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$402 across 3 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
- 2019-04-30
- Last updated
- 2023-06-13
- Certified
- 2023-06-13
Frequently asked questions
- What is Zachary Fleissner's NPI number?
- Zachary Fleissner's National Provider Identifier (NPI) is 1033773494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Fleissner's specialty?
- Zachary Fleissner is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Fleissner located?
- Zachary Fleissner's practice location on file with NPPES is 4500 San Pablo Rd S, Jacksonville, FL 32224-1865.
- What is Zachary Fleissner's phone number?
- The practice phone number listed in the NPPES registry for Zachary Fleissner is (904) 953-2000.
- Does Zachary Fleissner accept Medicare?
- Zachary Fleissner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Fleissner's NPI active?
- Yes — Zachary Fleissner's NPI (1033773494) is active in the NPPES registry as of the last update on 2023-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.