Stephanie Dieffenthaller
NPI 1922643345 · Medical Physician Assistant · Largo, FL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Dieffenthaller is a Medical Physician Assistant provider in Largo, FL (NPI 1922643345).
Provider details
- NPI number
- 1922643345
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- PA9112980 (FL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
6 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
366 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 176 | $105 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 86 | $72 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 43 | $107 |
| Automated Urinalysis Test81003 | 22 | $2 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 21 | $167 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus and Influenza87428 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 68 | 38 |
| Atorvastatin Calcium | 54 | 25 |
| Losartan Potassium | 46 | 21 |
| Amlodipine Besylate | 42 | 23 |
| Methylprednisolone | 39 | 37 |
| Rosuvastatin Calcium | 38 | 19 |
| Albuterol Sulfate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$181 across 8 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
- 2019-11-08
- Last updated
- 2023-04-03
- Certified
- 2023-04-03
Frequently asked questions
- What is Stephanie Dieffenthaller's NPI number?
- Stephanie Dieffenthaller's National Provider Identifier (NPI) is 1922643345, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Dieffenthaller's specialty?
- Stephanie Dieffenthaller is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephanie Dieffenthaller located?
- Stephanie Dieffenthaller's practice location on file with NPPES is 8787 Bryan Dairy Rd Ste 250, Largo, FL 33777-1259.
- What is Stephanie Dieffenthaller's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Dieffenthaller is (727) 391-6296.
- Does Stephanie Dieffenthaller accept Medicare?
- Stephanie Dieffenthaller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Dieffenthaller's NPI active?
- Yes — Stephanie Dieffenthaller's NPI (1922643345) is active in the NPPES registry as of the last update on 2023-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.