Dr Maciej Gerard Ossowski, M D - Medicare Family Practice in Merced, CA

Dr Maciej Gerard Ossowski, M D is a medicare enrolled "Family Medicine" physician in Merced, California. He graduated from medical school in 1973 and has 51 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Provident Primary Care Inc and his current practice location is 3349 G St Ste D, Suite D, Merced, California. You can reach out to his office (for appointments etc.) via phone at (209) 722-8040.

Dr Maciej Gerard Ossowski is licensed to practice in California (license number 00A383800) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1346207883.

Contact Information

Dr Maciej Gerard Ossowski, M D
3349 G St Ste D, Suite D,
Merced, CA 95340-0978
(209) 722-8040
(209) 722-0287

Map and Direction




Physician's Profile

Full NameDr Maciej Gerard Ossowski
GenderMale
SpecialityFamily Practice
Experience51 Years
Location3349 G St Ste D, Merced, California
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Maciej Gerard Ossowski graduated from medical school in 1973
  NPI Data:
  • NPI Number: 1346207883
  • Provider Enumeration Date: 04/27/2006
  • Last Update Date: 07/19/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 3173701299
  • Enrollment ID: I20110620000592

Medical Identifiers

Medical identifiers for Dr Maciej Gerard Ossowski such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1346207883NPI-NPPES
1740575182OtherCANPI

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 00A383800 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Provident Primary Care Inc86283508739

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. Dr Maciej Gerard Ossowski allows following entities to bill medicare on his behalf.
Entity NameProvident Primary Care Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154785517
PECOS PAC ID: 8628350873
Enrollment ID: O20170123002171

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. Dr Maciej Gerard Ossowski 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
Dr Maciej Gerard Ossowski, M D
3349 G St Ste D, Suite D,
Merced, CA 95340-0978

Ph: (209) 722-8040
Dr Maciej Gerard Ossowski, M D
3349 G St Ste D, Suite D,
Merced, CA 95340-0978

Ph: (209) 722-8040

Reviews and Comments


Family Medicine Doctors in Merced, CA

Charlie Loc Kano, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 127 W El Portal Dr, Merced, CA 95348
Phone: 209-723-3704    Fax: 209-723-0272
Dr. Eduardo Trinidad Villarama, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 847 W Childs Ave Ste C, Merced, CA 95341
Phone: 209-722-4842    
Roger Quach, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 315 Mercy Ave Ste 400, Merced, CA 95340
Phone: 209-564-3700    Fax: 209-564-3799
Leonard Mark Oestreicher, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 374 W Olive Avenue, Suite B, Merced, CA 95348
Phone: 209-383-3076    Fax: 209-383-6301
Humberto Barragan, DO
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 220 E 13th St, Merced, CA 95341
Phone: 209-383-3381    Fax: 209-722-2025
Jared Arthur Paskin, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 535 W 25th St, Merced, CA 95340
Phone: 209-722-9066    Fax: 209-383-1522
Dr. Kim Marie Hartwig, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 535 W 25th St, Merced, CA 95340
Phone: 209-722-9066    Fax: 209-383-1522

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.