Mary Margaret Ewing, MD, MBA - Medicare Psychiatry & Neurology in La Jolla, CA

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Mary Margaret Ewing, MD, MBA is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in La Jolla, California. Her current practice location is 1120 Silverado St Ste 203, La Jolla, California. You can reach out to her office (for appointments etc.) via phone at (858) 412-5141.

Mary Margaret Ewing is licensed to practice in California (license number A112699) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1073652004.

Contact Information

Mary Margaret Ewing, MD, MBA
1120 Silverado St Ste 203,
La Jolla, CA 92037-4524
(858) 412-5141
Not Available

Map and Direction




Physician's Profile

Full NameMary Margaret Ewing
GenderFemale
SpecialityPsychiatry & Neurology - Psychiatry
Location1120 Silverado St Ste 203, La Jolla, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1073652004
  • Provider Enumeration Date: 02/06/2007
  • Last Update Date: 03/30/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 9739375346
  • Enrollment ID: I20101122000902

Medical Identifiers

Medical identifiers for Mary Margaret Ewing such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1073652004NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry 2006-0220 (New Mexico)Secondary
2084P0800XPsychiatry & Neurology - Psychiatry A112699 (California)Primary

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. Mary Margaret Ewing allows following entities to bill medicare on her behalf.
Entity NameCounty Of Solano
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508072588
PECOS PAC ID: 7911893177
Enrollment ID: O20040224001362
Entity NameCounty Of Sonoma
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952637027
PECOS PAC ID: 4688658651
Enrollment ID: O20040616001152
Entity NameTms Neurohealth West Professional Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326598244
PECOS PAC ID: 1254605140
Enrollment ID: O20170915000702

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. Mary Margaret Ewing 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
Mary Margaret Ewing, MD, MBA
7660 Fay Ave # 352,
La Jolla, CA 92037-0021

Ph: (619) 549-4025		Mary Margaret Ewing, MD, MBA
1120 Silverado St Ste 203,
La Jolla, CA 92037-4524

Ph: (858) 412-5141

Reviews and Comments


Psychiatry & Neurology Doctors in La Jolla, CA

Dr. Nicholas N Jonas, M.D.
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Practice Location: 9898 Genesee Ave, La Jolla, CA 92037
Phone: 858-824-5400    
Dr. Hohui Wang, M.D.
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Practice Location: 9500 Gilman Dr # 9116a, La Jolla, CA 92093
Phone: 858-534-4040    Fax: 848-822-0231
Dr. Elizabeth Ann Bevins, MD, PHD
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Practice Location: Uc San Diego Center For Brain Health, 9444 Medical Center Dr, La Jolla, CA 92037
Phone: 858-657-8540    
Abigail Clark,
Psychiatry & Neurology
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Practice Location: 9500 Gilman Dr # 9116a, La Jolla, CA 92093
Phone: 619-471-0259    
Dr. Jody Corey-bloom, MD, PHD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 8950 Villa La Jolla Dr, C129, La Jolla, CA 92037
Phone: 858-246-1288    Fax: 858-246-1283
Dr. David Feifel, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 3252 Holiday Ct Ste 112, La Jolla, CA 92037
Phone: 858-412-4130    Fax: 858-412-5088

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.