Registry data as of Aug 27, 2026

Jack Nadler, M.D.

Family Medicine Physician · Lake Isabella, CA

Jack Nadler, M.D. is a family medicine physician with a practice address in Lake Isabella, California, and NPI 1164511051, issued on Oct 11, 2006. Check the license (California AO63717, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1164511051
Name
Jack Nadler
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
AO63717 CA
Self-reported in NPPES; status is on the state search
Practice location
4300 Birch Street, Lake Isabella, CA 93240
Phone
(760) 379-1791
Enumerated
Oct 11, 2006
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 4300 Birch Street

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

  1. Linda Block, MFTMarriage & Family Therapist1992971188
  2. Samantha Mongar, DOCritical Care Medicine (Internal Medicine) Physician1235115015

Verify Jack Nadler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license AO63717
    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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

88% more Medicare Part D claims than the average family medicine physician in 2024

6,604 Medicare Part D claims for 718 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 274 claims were for opioids.

  1. Jack Nadler6,604
  2. Specialty average3,519

Most prescribed

  1. Atorvastatin Calcium747 claims
  2. Levothyroxine Sodium278 claims
  3. Tamsulosin Hcl216 claims
  4. Lisinopril215 claims
  5. Losartan Potassium215 claims
  6. Amlodipine Besylate167 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.

Family Medicine Physician providers in California

There are 16,272 family medicine physician records in California.

Other family medicine physician records in California

  1. Omer Aba-Omer, MDSanta Monica, CA1649702093
  2. Michelle Ababa, MDWilmington, CA1710922513
  3. Anna Tzeitel Abalos, MDRoseville, CA1720200017
  4. Adan Abarca, MDAnaheim, CA1760553689
  5. Vanessa Abarca, DOVentura, CA1952040859
  6. Lorraine Abate, M.D.Sacramento, CA1104840008
  7. Robert Abatecola, MDCastro Valley, CA1669551719
  8. Romeo Abaya, M.D.Cottonwood, CA1598053506
  9. Effiem Abbah, MD, MPHSan Francisco, CA1821185133
  10. Khuzeman Abbasi, MDSanta Rosa, CA1841979952

Common questions

What is Jack Nadler, M.D.'s NPI number?

Jack Nadler, M.D.'s National Provider Identifier (NPI) is 1164511051, issued on Oct 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jack Nadler, M.D. located?

The NPPES record lists a practice address at 4300 Birch Street, Lake Isabella, CA, 93240. Phone: (760) 379-1791. Providers update this record themselves, so call before visiting.

How can I verify Jack Nadler, M.D.'s license?

NPPES lists California license number AO63717, 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 Jack Nadler, M.D. prescribe under Medicare Part D?

In 2024, Jack Nadler, M.D. had 6,604 Medicare Part D claims for 718 beneficiaries; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.