NPPES file of Aug 9, 2026

Gerald S. Simmons, B.D.S.

General Practice Dentistry · Palmdale, CA

Gerald S. Simmons, B.D.S. is a general practice dentistry with a practice address in Palmdale, California, and NPI 1578869442, issued on Feb 9, 2011. Check the license (California 31979, 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
1578869442
Name
Gerald S. Simmons
Credential
B.D.S.
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
31979 CA
Self-reported in NPPES; status is on the state search
Practice location
1029 Elizabeth Lake RD, Palmdale, CA 93551
Phone
(661) 947-3163
Enumerated
Feb 9, 2011
Record last updated
Feb 9, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(661) 947-0538
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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Verify Gerald S. Simmons 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 31979
    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
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17% fewer Medicare Part D claims than the average general practice dentistry in 2024

69 Medicare Part D claims for 42 beneficiaries, 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. Gerald Simmons69
  2. Specialty average83

Most prescribed

  1. Amoxicillin39 claims
  2. Azithromycin17 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.

Gerald S. Simmons among 17,852 general practice dentistry records in California

Gerald S. Simmons, B.D.S. 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 2011, is newer than 70% of them.

  • NPI issued2011 · 70% of these records are older, 27% 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 updated2011 · 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).

53 general practice dentistry records list a practice address in Palmdale

They are 53 of the 2,077 NPPES records with a practice address in Palmdale, and 17,852 general practice dentistry records in California.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Irmino Angeles, DMDPalmdale, CA 935511184629974
  2. Ana Maria Collantes, D.D.S.Palmdale, CA 935511538376520
  3. Joseph Fernandez, DDSPalmdale, CA 935511295965796
  4. David Gregory, DDSPalmdale, CA 935511962589986
  5. Kevin Ju, DDSPalmdale, CA 935511700952801
  6. David Kern, D.D.S.Palmdale, CA 935511487864203
  7. Roland Markarian, DMDPalmdale, CA 935511285809830
  8. Pejman Mokhtar, DDSPalmdale, CA 935511659549459

Common questions

What is Gerald S. Simmons, B.D.S.'s NPI number?

Gerald S. Simmons, B.D.S.'s National Provider Identifier (NPI) is 1578869442, issued on Feb 9, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Gerald S. Simmons, B.D.S. located?

The NPPES record lists a practice address at 1029 Elizabeth Lake RD, Palmdale, CA, 93551. Phone: (661) 947-3163. Providers update this record themselves, so call before visiting.

How can I verify Gerald S. Simmons, B.D.S.'s license?

NPPES lists California license number 31979, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Gerald S. Simmons, B.D.S. prescribe under Medicare Part D?

In 2024, Gerald S. Simmons, B.D.S. had 69 Medicare Part D claims for 42 beneficiaries; 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.