NPPES file of Aug 9, 2026

Lee Jeffrey Horwitz, M.D.

Family Medicine Physician · Oakdale, CA

Lee Jeffrey Horwitz, M.D. is a family medicine physician with a practice address in Oakdale, California, and NPI 1922096411, issued on Oct 10, 2005. Check the license (California A76767, 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
1922096411
Name
Lee Jeffrey Horwitz
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A76767 CA
Self-reported in NPPES; status is on the state search
Practice location
1425 W H St, Oakdale, CA 95361
Phone
(209) 848-1005
Enumerated
Oct 10, 2005
Record last updated
Feb 18, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(209) 845-8918
Medicaid ID
00A767670 CA
Medicare enrollment
Enrolled (PECOS I20070710000631); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 1996
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 family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 1425 W H St

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

  1. Andres Arellano, M.D.Internal Medicine Physician1306917430
  2. Upinder Basi, MDInternal Medicine Physician1891782009
  3. Krystyna Belski, M.D.Pediatrics Physician1366478414
  4. Bruce Blackhart, M.D.Family Medicine Physician1700874286
  5. Mark Cook, M.D.Family Medicine Physician1750379236
  6. Rebecca Day, PA - FNPFamily Nurse Practitioner1740292739

Verify Lee Jeffrey Horwitz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A76767    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

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45% more Medicare Part D claims than the average family medicine physician in 2024

5,141 Medicare Part D claims for 293 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 264 claims were for opioids.

  1. Lee Horwitz5,141
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium294 claims
  2. Levothyroxine Sodium213 claims
  3. Losartan Potassium203 claims
  4. Hydrocodone-Acetaminophen175 claims
  5. Lisinopril146 claims
  6. Metoprolol Succinate129 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: $188.58

11 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lee Horwitz$188.58
  2. Specialty average$902.55

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

Lee Jeffrey Horwitz among 17,133 family medicine physician records in California

Lee Jeffrey Horwitz, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 94% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1996 · median 2005 among the 10,652 with a school on file
  • Record last updated2010 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 family medicine physician records list a practice address in Oakdale

They are 7 of the 207 NPPES records with a practice address in Oakdale, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Oakdale → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Bruce Blackhart, M.D.Oakdale, CA 953611700874286
  2. Mark Cook, M.D.Oakdale, CA 953611750379236
  3. David Fuller, M.D.Oakdale, CA 953611033149448
  4. Albert Gelders, M.D.Oakdale, CA 953611417945999
  5. Kenneth Phenow, MD, MPHOakdale, CA 953611174144653
  6. Gretchen Webb-Kummer, M.D.Oakdale, CA 953611356475347
  7. Alessandra D'Avanzo, MDNewman, CA 953601962694208
  8. Divya Gangwar, M.D.Newman, CA 953601578795464

Common questions

What is Lee Jeffrey Horwitz, M.D.'s NPI number?

Lee Jeffrey Horwitz, M.D.'s National Provider Identifier (NPI) is 1922096411, issued on Oct 10, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Lee Jeffrey Horwitz, M.D. located?

The NPPES record lists a practice address at 1425 W H St, Oakdale, CA, 95361. Phone: (209) 848-1005. Providers update this record themselves, so call before visiting.

How can I verify Lee Jeffrey Horwitz, M.D.'s license?

NPPES lists California license number A76767, 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 Lee Jeffrey Horwitz, M.D. prescribe under Medicare Part D?

In 2024, Lee Jeffrey Horwitz, M.D. had 5,141 Medicare Part D claims for 293 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.