Dr Maha B Toma, MD - Medicare Internal Medicine in Lafayette, CA

Dr Maha B Toma, MD is a medicare enrolled "Internal Medicine" physician in Lafayette, California. She graduated from medical school in 1985 and has 39 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice John Muir Physician Network and her current practice location is 3466 Mt Diablo Blvd, Suite C-104, Lafayette, California. You can reach out to her office (for appointments etc.) via phone at (925) 284-4442.

Dr Maha B Toma is licensed to practice in California (license number C51245) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1427108125.

Contact Information

Dr Maha B Toma, MD
3466 Mt Diablo Blvd, Suite C-104,
Lafayette, CA 94549-7106
(925) 284-4442
(925) 283-8687

Map and Direction




Physician's Profile

Full NameDr Maha B Toma
GenderFemale
SpecialityInternal Medicine
Experience39 Years
Location3466 Mt Diablo Blvd, Lafayette, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Maha B Toma graduated from medical school in 1985
  NPI Data:
  • NPI Number: 1427108125
  • Provider Enumeration Date: 01/12/2007
  • Last Update Date: 08/27/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 2567568520
  • Enrollment ID: I20131230001052

Medical Identifiers

Medical identifiers for Dr Maha B Toma such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1427108125NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine K5229 (Texas)Secondary
207R00000XInternal Medicine C51245 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
John Muir Medical Center - Walnut Creek CampusWalnut creek, CAHospital
Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CAHospital
John Muir Medical Center - Concord CampusConcord, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
John Muir Physician Network6608789813442

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 Maha B Toma allows following entities to bill medicare on her behalf.
Entity NameJohn Muir Physician Network
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841407665
PECOS PAC ID: 6608789813
Enrollment ID: O20031226000143

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 Maha B Toma 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 Maha B Toma, MD
Dept 34929, P.o. Box 39000,
San Francisco, CA 94139-0001

Ph: (925) 952-2828
Dr Maha B Toma, MD
3466 Mt Diablo Blvd, Suite C-104,
Lafayette, CA 94549-7106

Ph: (925) 284-4442

Reviews and Comments


Internal Medicine Doctors in Lafayette, CA

Dr. Michael Stoskopf Ascher, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1515 El Sombro, Lafayette, CA 94549
Phone: 925-283-7134    Fax: 925-299-1755
Dr. Christopher A Simmons, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3466 Mt Diablo Blvd, Suite C-104, Lafayette, CA 94549
Phone: 925-284-4442    Fax: 925-283-8687
Dr. James Earl Pennington, M.D.
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 4 Toledo Dr, Lafayette, CA 94549
Phone: 925-899-5922    Fax: 925-283-7876
Leonard Mario Saputo, MD
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 3799 Mt Diablo Blvd, Lafayette, CA 94549
Phone: 925-962-3799    Fax: 925-962-3700
Janice E Manjuck, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3687 Mt Diablo Blvd, Lafayette, CA 94549
Phone: 925-962-6602    Fax: 925-299-6849
Aimee Keyashian, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3466 Mt Diablo Blvd, Lafayette, CA 94549
Phone: 925-296-7490    

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.