George Ishak, MD - Medicare Internal Medicine in Thousand Oaks, CA

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George Ishak, MD is a medicare enrolled "Internal Medicine" physician in Thousand Oaks, California. He graduated from medical school in 2014 and has 12 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice North East Medical Services, Life Medical Practitioners, Clarkian Hospitalist Corporation and his current practice location is 215 W Janss Rd, Thousand Oaks, California. You can reach out to his office (for appointments etc.) via phone at (805) 497-2727.

George Ishak is licensed to practice in California (license number A145111) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1790190825.

Contact Information

George Ishak, MD
215 W Janss Rd,
Thousand Oaks, CA 91360-1847
(805) 497-2727
Not Available

Map and Direction




Physician's Profile

Full NameGeorge Ishak
GenderMale
SpecialityInternal Medicine
Experience12 Years
Location215 W Janss Rd, Thousand Oaks, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • George Ishak graduated from medical school in 2014
  NPI Data:
  • NPI Number: 1790190825
  • Provider Enumeration Date: 06/27/2014
  • Last Update Date: 09/13/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 4486925062
  • Enrollment ID: I20170731002336

Medical Identifiers

Medical identifiers for George Ishak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1790190825NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist A145111 (California)Secondary
207R00000XInternal Medicine A145111 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Seton Medical CenterDaly city, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North East Medical Services4284520529121
Life Medical Practitioners569813674520
Clarkian Hospitalist Corporation711331098812

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. George Ishak allows following entities to bill medicare on his behalf.
Entity NameNorth East Medical Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1518911304
PECOS PAC ID: 4284520529
Enrollment ID: O20040224001157
Entity NameHospitalist Medicine Physicians Of California Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184663965
PECOS PAC ID: 8426062027
Enrollment ID: O20060202000956
Entity NameInpatient Specialists Of California Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952792475
PECOS PAC ID: 3476864448
Enrollment ID: O20150617000915
Entity NameAdvantage Hospitalists, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1801269881
PECOS PAC ID: 7810291531
Enrollment ID: O20160201000977
Entity NameHospital Medicine Of California Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770037236
PECOS PAC ID: 4688952906
Enrollment ID: O20161020001556
Entity NameNes Western Group A Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1487125019
PECOS PAC ID: 4587902952
Enrollment ID: O20190208002821
Entity NameJaspreet Somal M.d., A.p.c.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154917318
PECOS PAC ID: 0840604690
Enrollment ID: O20210205002333
Entity NameClarkian Hospitalist Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1780353227
PECOS PAC ID: 7113310988
Enrollment ID: O20220201000088
Entity NameLife Medical Practitioners
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821799164
PECOS PAC ID: 5698136745
Enrollment ID: O20230804002693

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. George Ishak is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
George Ishak, MD
211 Eastmoor Ave,
Daly City, CA 94015-2036

Ph: () -		George Ishak, MD
215 W Janss Rd,
Thousand Oaks, CA 91360-1847

Ph: (805) 497-2727

Reviews and Comments


Internal Medicine Doctors in Thousand Oaks, CA

Dr. Ishaque Ali Syed, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 215 W Janss Rd, Thousand Oaks, CA 91360
Phone: 619-573-4511    
Sidney George Iriana, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 317 S Moorpark Rd, Thousand Oaks, CA 91361
Phone: 805-557-9930    Fax: 805-557-9940
Dr. Anthony Capparelli, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 375 Rolling Oaks Dr, Suite 100, Thousand Oaks, CA 91361
Phone: 805-497-7775    Fax: 805-557-1074
John Y. Hess, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 2220 Lynn Rd, 201, Thousand Oaks, CA 91360
Phone: 805-494-9494    Fax: 805-374-9994
Dr. David Paul Pryor, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1683 Calle Rochelle, Thousand Oaks, CA 91360
Phone: 805-558-7059    
Dzenana Cabaravdic, MD
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 215 W Janss Rd, Thousand Oaks, CA 91360
Phone: 805-497-2727    
Dr. Saibal Kar, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 227 W Janss Rd Ste 340, Thousand Oaks, CA 91360
Phone: 805-852-9100    Fax: 805-852-9101

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.