NPPES file of Aug 9, 2026

Al R. Abad, DDS

General Practice Dentistry · San Jose, CA

Al R. Abad, DDS is a general practice dentistry with a practice address in San Jose, California, and NPI 1104992148, issued on Nov 28, 2006. Check the license (California 39588, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1104992148
Name
Al R. Abad
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
39588 CA
Self-reported in NPPES; status is on the state search
Practice location
2664 Berryessa RD, San Jose, CA 95132
Phone
(408) 272-3809
Enumerated
Nov 28, 2006
Record last updated
Feb 5, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(408) 272-3811
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 2664 Berryessa RD

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

  1. Maximilian Bautista, D.D.SGeneral Practice Dentistry1568656080
  2. William Fat, DDSDentist1730225475
  3. Dexter MassaGeneral Practice Dentistry1831356112
  4. Chi Nguyen, DDSGeneral Practice Dentistry1588616197
  5. Kalindi Patwa, D.M.D.Dentist1467667238
  6. Catherine Quach, D.M.D.General Practice Dentistry1043495336

Verify Al R. Abad 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 39588
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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83% fewer Medicare Part D claims than the average general practice dentistry in 2024

14 Medicare Part D claims, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Al Abad14
  2. Specialty average83

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.

Al R. Abad among 17,852 general practice dentistry records in California

Al R. Abad, DDS is one of 17,852 general practice dentistry records with a practice address in California. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 71% newer
  • In a Medicare fileYes · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2008 · 79% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

583 general practice dentistry records list a practice address in San Jose

They are 583 of the 20,925 NPPES records with a practice address in San Jose, and 17,852 general practice dentistry records in California.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Bernard Aitchison, D.D.S.San Jose, CA 951321346468675
  2. Alan Alvarez, D.D.S.San Jose, CA 951321952478604
  3. Vicenta Claudio, D.D.SSan Jose, CA 951321851500243
  4. Colin Ilas, D.D.S.San Jose, CA 951321215061262
  5. Darwin Naranja, D.M.DSan Jose, CA 951321710182514
  6. Chi Nguyen, DDSSan Jose, CA 951321588616197
  7. Monica Ramirez, D.D.S.San Jose, CA 951321770650350
  8. Wenqiang Rong, DDSSan Jose, CA 951321093853574

Common questions

What is Al R. Abad, DDS's NPI number?

Al R. Abad, DDS's National Provider Identifier (NPI) is 1104992148, issued on Nov 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Al R. Abad, DDS located?

The NPPES record lists a practice address at 2664 Berryessa RD, San Jose, CA, 95132. Phone: (408) 272-3809. Providers update this record themselves, so call before visiting.

How can I verify Al R. Abad, DDS's license?

NPPES lists California license number 39588, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Al R. Abad, DDS prescribe under Medicare Part D?

In 2024, Al R. Abad, DDS had 14 Medicare Part D claims; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions only.

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.