NPPES file of Aug 9, 2026

Michael Preziosi, M.D.

Infectious Disease Physician · La Jolla, CA

Michael Preziosi, M.D. is an infectious disease physician with a practice address in La Jolla, California, and NPI 1942485883, issued on Jan 9, 2008. Check the license (California A99585, as entered in NPPES) on the Medical Board of California; 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
1942485883
Name
Michael Preziosi
Credential
M.D.
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
A99585 CA
Self-reported in NPPES; status is on the state search
Practice location
9898 Genesee Ave, La Jolla, CA 92037
Phone
(858) 824-5484
Enumerated
Jan 9, 2008
Record last updated
Jun 15, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20090720000521); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →

Also registered at 9898 Genesee Ave

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

  1. Omar Al-Nouri, D.O.Vascular Surgery Physician1770742264
  2. Bella Albakova, PASurgical Physician Assistant1013020809
  3. Rawaa Almukhtar, M.D., MPHDermatology Physician1003202409
  4. Eneh-Lieh Ancheta, NPNurse Practitioner1477067981
  5. Bruce Armstrong, P.A.-C. , MHSPhysician Assistant1003915042
  6. Anshuman Bansal, M.D.Vascular & Interventional Radiology Physician1366685273

Verify Michael Preziosi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A99585    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
Open 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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43% fewer Medicare Part D claims than the average infectious disease physician in 2024

391 Medicare Part D claims for 94 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.

  1. Michael Preziosi391
  2. Specialty average689

Most prescribed

  1. Doxycycline Hyclate43 claims
  2. Biktarvy36 claims
  3. Penicillin V Potassium31 claims
  4. Amoxicillin19 claims
  5. Valacyclovir16 claims
  6. Amikacin Sulfate14 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.

Industry payments in 2024: $24.78

1 payment: food and beverage; the largest payer was ViiV Healthcare Company. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Preziosi$24.78
  2. Specialty average$4,362.19

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

Bills Medicare through one group practice

  1. Scripps HealthLa Jolla, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Michael Preziosi among 1,119 infectious disease physician records in California

Michael Preziosi, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 59% of them.

  • NPI issued2008 · 59% of these records are older, 34% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2005 · median 2003 among the 735 with a school on file
  • Record last updated2016 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in California

There are 1,119 infectious disease physician records in California.

All 1,119 in California → Every provider in La Jolla → Infectious Disease Physician nationwide →

The 8 infectious disease physician records with the nearest ZIP codes

  1. Alina Adeel, M.DLa Jolla, CA 920371831453596
  2. Wun-Ling Chang, M.D.La Jolla, CA 920371194734111
  3. Anne Cowell, M.D.La Jolla, CA 920371639494420
  4. Michael Doud, MDLa Jolla, CA 920371457812489
  5. Miguel Goicoechea, M.D.La Jolla, CA 920371588678775
  6. Theo Kirkland, M.D.La Jolla, CA 920371528079795
  7. Monika Kumaraswamy, M.D.La Jolla, CA 920371891938106
  8. Herman Miller, MDLa Jolla, CA 920371881631158

Common questions

What is Michael Preziosi, M.D.'s NPI number?

Michael Preziosi, M.D.'s National Provider Identifier (NPI) is 1942485883, issued on Jan 9, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Michael Preziosi, M.D. located?

The NPPES record lists a practice address at 9898 Genesee Ave, La Jolla, CA, 92037. Phone: (858) 824-5484. Providers update this record themselves, so call before visiting.

How can I verify Michael Preziosi, M.D.'s license?

NPPES lists California license number A99585, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Michael Preziosi, M.D. prescribe under Medicare Part D?

In 2024, Michael Preziosi, M.D. had 391 Medicare Part D claims for 94 beneficiaries; the average among infectious disease physician prescribers was 689. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.