Dr John D Mesaros, MD - Medicare Psychiatry in Berkeley, CA

Dr John D Mesaros, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Berkeley, California. He went to Michigan State University College Of Human Medicine and graduated in 1992 and has 32 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice The Guidance Center and his current practice location is 2006 Dwight Way, #101, Berkeley, California. You can reach out to his office (for appointments etc.) via phone at (925) 448-2958.

Dr John D Mesaros is licensed to practice in California (license number G131019) 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 1669587580.

Contact Information

Dr John D Mesaros, MD
2006 Dwight Way, #101,
Berkeley, CA 94704-2633
(925) 448-2958
Not Available

Map and Direction




Physician's Profile

Full NameDr John D Mesaros
GenderMale
SpecialityPsychiatry
Experience32 Years
Location2006 Dwight Way, Berkeley, 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 D Mesaros attended and graduated from Michigan State University College Of Human Medicine in 1992
  NPI Data:
  • NPI Number: 1669587580
  • Provider Enumeration Date: 08/20/2006
  • Last Update Date: 05/03/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 2769451012
  • Enrollment ID: I20041001001089

Medical Identifiers

Medical identifiers for Dr John D Mesaros such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1669587580NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry G131019 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The Guidance Center802217173530

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 D Mesaros allows following entities to bill medicare on his behalf.
Entity NameMontcalm Care Network
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710074448
PECOS PAC ID: 8123000932
Enrollment ID: O20040623001391
Entity NameThe Guidance Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1609947027
PECOS PAC ID: 8022171735
Enrollment ID: O20090107000136

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 D Mesaros 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 D Mesaros, MD
225 Coggins Dr, Apt 252,
Pleasant Hill, CA 94523-4402

Ph: (925) 448-2958
Dr John D Mesaros, MD
2006 Dwight Way, #101,
Berkeley, CA 94704-2633

Ph: (925) 448-2958

Reviews and Comments


Psychiatry & Neurology Doctors in Berkeley, CA

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Dr. Daiana J Harper, M.D.
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Phone: 510-204-4635    

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.

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