What is William Gaya's NPI number?

William Gaya's National Provider Identifier (NPI) is 1821183401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Gaya's specialty?

William Gaya is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).

Where is William Gaya located?

William Gaya's practice location on file with NPPES is 801 Sw 1st Ave, Ocala, FL 34471.

What is William Gaya's phone number?

The practice phone number listed in the NPPES registry for William Gaya is (352) 732-7233.

Does William Gaya accept Medicare?

William Gaya is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is William Gaya's NPI active?

Yes — William Gaya's NPI (1821183401) is active in the NPPES registry as of the last update on 2008-04-14.

IndividualActiveAccepts Medicare

William Gaya, M.D.

NPI 1821183401 · Neurology Physician · Ocala, FL

William Gaya, M.D. is a Neurology Physician provider in Ocala, FL (NPI 1821183401).

Provider details

NPI number: 1821183401
Entity type: Individual
Primary specialty: Neurology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: ME73584 (FL)

Practice location

801 Sw 1st Ave

Ocala, FL 34471

Phone: (352) 732-7233

Fax: (352) 732-0239

Street-level locationGet directions

More FL providers

Mailing address

Po Box 10

Ocala, FL 34478-0010

Specialties & taxonomies

Neurology PhysicianPrimary2084N0400XLicense ME73584 (FL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(94/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 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
1,779 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 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)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	831	$124
New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204	317	$163
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	202	$88
New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205	88	$216
Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886	76	$91
Measurement of Brain Wave Activity (eeg), Awake and Asleep

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Memantine Hcl	1,018	347
Donepezil Hcl	970	346
Levetiracetam	448	121
Gabapentin	295	130
Sertraline Hcl	278	90
Carbidopa/Levodopabrand: Carbidopa-Levodopa	270	87
Primidone	216	67
Duloxetine Hcl

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$335 across 9 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.

Enumerated: 2006-10-03
Last updated: 2008-04-14

Frequently asked questions

What is William Gaya's NPI number?: William Gaya's National Provider Identifier (NPI) is 1821183401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is William Gaya's specialty?: William Gaya is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
Where is William Gaya located?: William Gaya's practice location on file with NPPES is 801 Sw 1st Ave, Ocala, FL 34471.
What is William Gaya's phone number?: The practice phone number listed in the NPPES registry for William Gaya is (352) 732-7233.
Does William Gaya accept Medicare?: William Gaya is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is William Gaya's NPI active?: Yes — William Gaya's NPI (1821183401) is active in the NPPES registry as of the last update on 2008-04-14.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

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	831	$124
New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204	317	$163
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	202	$88
New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205	88	$216
Needle Measurement of Electrical Activity in Arm Or Leg Muscles, Complete Study95886	76	$91
Measurement of Brain Wave Activity (eeg), Awake and Asleep

Drug

Part D claims (2024)

Beneficiaries

Memantine Hcl

1,018

347

Donepezil Hcl

970

346

Levetiracetam

448

121

Gabapentin

295

130

Sertraline Hcl

278

Carbidopa/Levodopabrand: Carbidopa-Levodopa

270

Primidone

216

Duloxetine Hcl

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$335 across 9 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments