NPPES file of Aug 9, 2026

Andre Michael Ishak, M.D.

Orthopaedic Hand Surgery Physician · Oxnard, CA

Andre Michael Ishak, M.D. is an orthopaedic hand surgery physician with a practice address in Oxnard, California, and NPI 1639135445, issued on Apr 21, 2006. Check the license (California G81316, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639135445
Name
Andre Michael Ishak
Credential
M.D.
Primary taxonomy
Orthopaedic Hand Surgery Physician 207XS0106X
License number
G81316 CA
Self-reported in NPPES; status is on the state search
Practice location
2221 Wankel Way, Oxnard, CA 93030
Phone
(805) 988-9366
Enumerated
Apr 21, 2006
Record last updated
Jan 20, 2026
Fax
(805) 483-3747
Medicare enrollment
Enrolled (PECOS I20041201000221); accepts Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 1993
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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Also registered at 2221 Wankel Way

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

  1. Andrew Armstrong, PA-C, MPASPhysician Assistant1306196316
  2. Christian CastellanosPhysician Assistant1346027828
  3. Kevin Deitel, MDOrthopaedic Surgery of the Spine Physician1033111380
  4. Deborah Fuqua Cuen, OTR/LOccupational Therapist1366544751
  5. Mark Ghilarducci, M.D.Sports Medicine (Orthopaedic Surgery) Physician1922063700
  6. Nicola GrunOccupational Therapist1245760776

Verify Andre Michael Ishak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G81316
    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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83% more Medicare Part D claims than the average orthopaedic hand surgery physician in 2024

341 Medicare Part D claims for 211 beneficiaries, against an average of 186 among the 2,203 providers of this specialty who prescribed in Part D. 164 claims were for opioids.

  1. Andre Ishak341
  2. Specialty average186

Most prescribed

  1. Meloxicam128 claims
  2. Acetaminophen-Codeine125 claims
  3. Hydrocodone-Acetaminophen30 claims
  4. Methylprednisolone21 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.

No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $222.14

4 payments; by number, the most common kind was food and beverage; the largest payer was Skeletal Dynamics Inc. The 1,819 providers of this specialty with any payment received $5,529.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Andre Ishak$222.14
  2. Specialty average$5,529.86

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. Ventura Orthopedics Medical Group IncOxnard, CA

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

Andre Michael Ishak among 288 orthopaedic hand surgery physician records in California

Andre Michael Ishak, M.D. is one of 288 orthopaedic hand surgery physician records with a practice address in California. 85% 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 11% of them.

  • NPI issued2006 · 11% of these records are older, 52% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1993 · median 2004 among the 214 with a school on file
  • Record last updated2026 · 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 207XS0106X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Hand Surgery Physician providers in California

There are 288 orthopaedic hand surgery physician records in California.

The 8 orthopaedic hand surgery physician records with the nearest ZIP codes

  1. Lorenzo Walker, M.D.Oxnard, CA 930361649210725
  2. Joshua Gluck, MDVentura, CA 930031538336573
  3. Sahil Vohra, D.O.Ventura, CA 930031629428792
  4. Joanne Wang, MDSimi Valley, CA 930651255727285
  5. Michael Behrman, MDSanta Barbara, CA 931051932217411
  6. Dennis Phelps, M.D.Santa Barbara, CA 931051912991662
  7. Adam Rives, M.D.Santa Barbara, CA 931051508084690
  8. Robert Ruth, MDSanta Barbara, CA 931051730273681

Common questions

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

Andre Michael Ishak, M.D.'s National Provider Identifier (NPI) is 1639135445, issued on Apr 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Andre Michael Ishak, M.D. located?

The NPPES record lists a practice address at 2221 Wankel Way, Oxnard, CA, 93030. Phone: (805) 988-9366. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number G81316, 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 Andre Michael Ishak, M.D. prescribe under Medicare Part D?

In 2024, Andre Michael Ishak, M.D. had 341 Medicare Part D claims for 211 beneficiaries; the average among orthopaedic hand surgery physician prescribers was 186. Part D covers Medicare prescriptions only.

What is Andre Michael Ishak, M.D.'s MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.