What is Mercedes Leoncio's NPI number?

Mercedes Leoncio's National Provider Identifier (NPI) is 1134358021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mercedes Leoncio's specialty?

Mercedes Leoncio is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).

Where is Mercedes Leoncio located?

Mercedes Leoncio's practice location on file with NPPES is 263 Sandy Neck Way, Vallejo, CA 94591-7851.

What is Mercedes Leoncio's phone number?

The practice phone number listed in the NPPES registry for Mercedes Leoncio is (415) 312-9344.

Is Mercedes Leoncio's NPI active?

Yes — Mercedes Leoncio's NPI (1134358021) is active in the NPPES registry as of the last update on 2012-07-25.

IndividualActive

Mercedes Leoncio, DDS

NPI 1134358021 · Dentist · Vallejo, CA

Mercedes Leoncio, DDS is a Dentist provider in Vallejo, CA (NPI 1134358021).

Provider details

NPI number: 1134358021
Entity type: Individual
Primary specialty: DentistDental Providers
Credential: DDS
Sex: Female
Sole proprietor: Yes
License: 58452 (CA)

Practice location

263 Sandy Neck Way

Vallejo, CA 94591-7851

Phone: (415) 312-9344

Street-level locationGet directions

More CA providers

Mailing address

263 Sandy Neck Way

Vallejo, CA 94591-7851

Specialties & taxonomies

DentistPrimary122300000XLicense 58452 (CA)
Dental Providers

Profile Score

Detailed profile(88/100 index)

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

Registry tenure33% of score
17 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

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 prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)	Beneficiaries
Amoxicillin	11	11

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Transparency — industry payments

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

$202 across 11 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: 2009-07-13
Last updated: 2012-07-25

Frequently asked questions

What is Mercedes Leoncio's NPI number?: Mercedes Leoncio's National Provider Identifier (NPI) is 1134358021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mercedes Leoncio's specialty?: Mercedes Leoncio is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).
Where is Mercedes Leoncio located?: Mercedes Leoncio's practice location on file with NPPES is 263 Sandy Neck Way, Vallejo, CA 94591-7851.
What is Mercedes Leoncio's phone number?: The practice phone number listed in the NPPES registry for Mercedes Leoncio is (415) 312-9344.
Is Mercedes Leoncio's NPI active?: Yes — Mercedes Leoncio's NPI (1134358021) is active in the NPPES registry as of the last update on 2012-07-25.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Frequently asked questions