Dr John Robert Rostkowski, MD - Medicare Psychiatry in Concord, CA

Dr John Robert Rostkowski, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Concord, California. He went to New York University School Of Medicine and graduated in 1969 and has 56 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Contra Costa County and his current practice location is 1420 Willow Pass Rd # 200, Concord, California. You can reach out to his office (for appointments etc.) via phone at (925) 899-3883.

Dr John Robert Rostkowski is licensed to practice in California (license number G24111) 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 1861424665.

Contact Information

Dr John Robert Rostkowski, MD
1420 Willow Pass Rd # 200,
Concord, CA 94520-5823
(925) 899-3883
(925) 229-9037

Map and Direction




Physician's Profile

Full NameDr John Robert Rostkowski
GenderMale
SpecialityPsychiatry
Experience56 Years
Location1420 Willow Pass Rd # 200, Concord, 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:
  • Dr John Robert Rostkowski attended and graduated from New York University School Of Medicine in 1969
  NPI Data:
  • NPI Number: 1861424665
  • Provider Enumeration Date: 07/06/2006
  • Last Update Date: 03/01/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 1557536919
  • Enrollment ID: I20111213000647

Medical Identifiers

Medical identifiers for Dr John Robert Rostkowski such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1861424665NPI-NPPES
00G241110MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry G24111 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Contra Costa County862805297457

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 John Robert Rostkowski allows following entities to bill medicare on his behalf.
Entity NameContra Costa County
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376620336
PECOS PAC ID: 8628052974
Enrollment ID: O20050707001058

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 John Robert Rostkowski 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 John Robert Rostkowski, MD
1150 Arlington Way,
Martinez, CA 94553-2322

Ph: (925) 899-3883
Dr John Robert Rostkowski, MD
1420 Willow Pass Rd # 200,
Concord, CA 94520-5823

Ph: (925) 899-3883

Reviews and Comments


Psychiatry & Neurology Doctors in Concord, CA

Dr. Ross Bennett Andelman, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 2425 Bisso Ln, Site 280, Concord, CA 94520
Phone: 925-646-5915    Fax: 925-646-5811
Marie Ruth Champlin, D.O.
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 1420 Willow Pass Rd Ste 200, Concord, CA 94520
Phone: 925-646-5480    
Satbir Singh, MD
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 2740 Grant St, Concord, CA 94520
Phone: 925-674-4100    
Dr. Jennifer Miles, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 2351 Olivera Rd, Concord, CA 94520
Phone: 925-603-1961    
Dr. Philip Shain, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 2630 Salvio St, Concord, CA 94519
Phone: 925-676-8260    Fax: 925-253-7596
Jessica Lee, M.D., MPH
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 2425 Bisso Ln, Suite 200, Concord, CA 94520
Phone: 925-521-5758    
Vivian Sun, MD
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 1420 Willow Pass Rd, Suite 200, Concord, CA 94520
Phone: 925-646-5480    

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).

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