Keith A Leibowitz, MD - Medicare Internal Medicine in Modesto, CA

Keith A Leibowitz, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Modesto, California. He went to New York Medical College and graduated in 1985 and has 39 years of diverse experience with area of expertise as Internal Medicine. His current practice location is 700 17th St Ste 102, Modesto, California. You can reach out to his office (for appointments etc.) via phone at (209) 522-6100.

Keith A Leibowitz is licensed to practice in California (license number G129017) 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 1083689335.

Contact Information

Keith A Leibowitz, MD
700 17th St Ste 102,
Modesto, CA 95354-1248
(209) 522-6100
(209) 522-6110

Map and Direction




Physician's Profile

Full NameKeith A Leibowitz
GenderMale
SpecialityInternal Medicine
Experience39 Years
Location700 17th St Ste 102, Modesto, 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:
  • Keith A Leibowitz attended and graduated from New York Medical College in 1985
  NPI Data:
  • NPI Number: 1083689335
  • Provider Enumeration Date: 02/21/2006
  • Last Update Date: 05/31/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6305889148
  • Enrollment ID: I20151123001316

Medical Identifiers

Medical identifiers for Keith A Leibowitz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1083689335NPI-NPPES
192063OtherVAANTHEM
P00313962OtherRR/MEDICARE
010251338MedicaidVA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 0101239026 (Virginia)Secondary
207RG0100XInternal Medicine - Gastroenterology G129017 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Doctors Medical CenterModesto, CAHospital
Emanuel Medical CenterTurlock, CAHospital
Stanislaus Surgical HospitalModesto, CAHospital
Adventist Health SonoraSonora, CAHospital

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. Keith A Leibowitz allows following entities to bill medicare on his behalf.
Entity NameCentral Valley Gastroenterology Associates, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659531317
PECOS PAC ID: 1658433578
Enrollment ID: O20081230000511

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. Keith A Leibowitz 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
Keith A Leibowitz, MD
4120 Dale Rd., Suite J8-240,
Modesto, CA 95356

Ph: (209) 522-6100
Keith A Leibowitz, MD
700 17th St Ste 102,
Modesto, CA 95354-1248

Ph: (209) 522-6100

Reviews and Comments


Internal Medicine Doctors in Modesto, CA

Brian E. Dolnick, DO
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 4601 Dale Rd, Modesto, CA 95356
Phone: 209-557-1000    
Dr. Joshua Mckee Anderson, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 4601 Dale Rd, Modesto, CA 95356
Phone: 209-735-7200    
Sulman Razzaq,
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Practice Location: 1409 E Briggsmore Ave, Modesto, CA 95355
Phone: 209-550-4750    
Alvin K Eng, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 1540 Florida Ave, # 100, Modesto, CA 95350
Phone: 209-577-5557    Fax: 209-577-8125
Esra Olgun, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 600 Coffee Rd, Modesto, CA 95355
Phone: 209-521-6097    
Ronak Chandrakant Shah, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 600 Coffee Rd, Modesto, CA 95355
Phone: 209-521-6097    
Dr. Paul Golden, M.D.
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 1330 Nelson Ave, Suite C, Modesto, CA 95350
Phone: 209-576-1547    Fax: 209-576-2736

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.