William Hammesfahr, MD
NPI 1962446500 · Neurology Physician · Lady Lake, FL
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hammesfahr, MD is a Neurology Physician provider in Lady Lake, FL (NPI 1962446500).
Provider details
- NPI number
- 1962446500
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME 52212 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
85 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) |
|---|---|---|
| Administration of Psychological Or Neuropsychological Test By Technician, Each Additional 30 Minutes96139 | 13 | $41 |
| Evaluation of Brain Response to Sound for Determination of Hearing Threshold With Interpretation and Report92652 | 12 | $123 |
| Measurement of Brain Wave Activity (eeg), Awake and Drowsy95816 | 12 | $456 |
| Measurement of Nerve Conduction Using Visual Stimulation Testing With Report95930 | 12 | $77 |
| Measurement of Brain Wave Activity (eeg), Digital Analysis95957 | 12 | $332 |
| Evaluation of Neuropsychological Test, First Hour96132 | 12 | $137 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2014-03-25
Frequently asked questions
- What is William Hammesfahr's NPI number?
- William Hammesfahr's National Provider Identifier (NPI) is 1962446500, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hammesfahr's specialty?
- William Hammesfahr is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is William Hammesfahr located?
- William Hammesfahr's practice location on file with NPPES is 510 Cr 466, Lady Lake, FL 32159.
- What is William Hammesfahr's phone number?
- The practice phone number listed in the NPPES registry for William Hammesfahr is (352) 414-5322.
- Does William Hammesfahr accept Medicare?
- William Hammesfahr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hammesfahr's NPI active?
- Yes — William Hammesfahr's NPI (1962446500) is active in the NPPES registry as of the last update on 2014-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.