NPPES file of Aug 9, 2026

Antoinette Mariano-Sabido, PA-C

Physician Assistant · Brentwood, CA

Antoinette Mariano-Sabido, PA-C is a physician assistant with a practice address in Brentwood, California, and NPI 1306328323, issued on Sep 6, 2018. Check the license (California 59419, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1306328323
Name
Antoinette Mariano-Sabido
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License numbers
59419 CA
9229 CA
9229 GA
093289 IA
Self-reported in NPPES; status is on the state search
Practice location
2221 Balfour RD, Brentwood, CA 94513
Phone
(252) 409-1169
Enumerated
Sep 6, 2018
Record last updated
Apr 2, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2221 Balfour RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Christina LacklandFamily Nurse Practitioner1023574423
  2. Timothy Ray, PA-CMedical Physician Assistant1205234606

Verify Antoinette Mariano-Sabido in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 59419
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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96% fewer Medicare Part D claims than the average physician assistant in 2024

35 Medicare Part D claims for 14 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.

  1. Antoinette Mariano-Sabido35
  2. Specialty average830

Most prescribed

  1. Xarelto13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score74.3
  2. Costout of 100 · 30%44.0
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $890.85

34 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Antoinette Mariano-Sabido$890.85
  2. Specialty average$841.65

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Antoinette Mariano-Sabido among 14,451 physician assistant records in California

Antoinette Mariano-Sabido, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 52% of them.

  • NPI issued2018 · 52% of these records are older, 44% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 50% of these records are
  • Record last updated2025 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physician Assistant providers in California

There are 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Alexis Gandarilla, PABrentwood, CA 945131164909040
  2. Floriana MasiaBrentwood, CA 945131720967045
  3. Vina Nguyen, PA-CBrentwood, CA 945131336611631
  4. Yulisa Garcia Diaz, PACalistoga, CA 945151710789946
  5. Brittany Marte, PA-CCalistoga, CA 945151336747294
  6. Joshua Pfeiffer, PA-CBenicia, CA 945101447729736
  7. Katy Alexy, PA-CAntioch, CA 945091629544556
  8. Anthony Ambrosino, P.A.Antioch, CA 945091558733451

Common questions

What is Antoinette Mariano-Sabido, PA-C's NPI number?

Antoinette Mariano-Sabido, PA-C's National Provider Identifier (NPI) is 1306328323, issued on Sep 6, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Antoinette Mariano-Sabido, PA-C located?

The NPPES record lists a practice address at 2221 Balfour RD, Brentwood, CA, 94513. Phone: (252) 409-1169. Providers update this record themselves, so call before visiting.

How can I verify Antoinette Mariano-Sabido, PA-C's license?

NPPES lists California license number 59419, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Antoinette Mariano-Sabido, PA-C prescribe under Medicare Part D?

In 2024, Antoinette Mariano-Sabido, PA-C had 35 Medicare Part D claims for 14 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Antoinette Mariano-Sabido, PA-C's MIPS final score?

The 2023 MIPS final score is 76.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.