Pei Lily Mulroy, DO - Medicare Hospitalist in Los Alamitos, CA

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Pei Lily Mulroy, DO is a medicare enrolled "Hospitalist" physician in Los Alamitos, California. She graduated from medical school in 2012 and has 13 years of diverse experience with area of expertise as Hospitalist. She is a member of the group practice Prohealth Partners, A Medical Group and her current practice location is 3751 Katella Ave, Los Alamitos, California. You can reach out to her office (for appointments etc.) via phone at (562) 246-6822.

Pei Lily Mulroy is licensed to practice in California (license number 20A13031) 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 1568892115.

Contact Information

Pei Lily Mulroy, DO
3751 Katella Ave,
Los Alamitos, CA 90720-3113
(562) 246-6822
Not Available

Map and Direction




Physician's Profile

Full NamePei Lily Mulroy
GenderFemale
SpecialityHospitalist
Experience13 Years
Location3751 Katella Ave, Los Alamitos, 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:
  • Pei Lily Mulroy graduated from medical school in 2012
  NPI Data:
  • NPI Number: 1568892115
  • Provider Enumeration Date: 11/19/2013
  • Last Update Date: 08/29/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 4284855065
  • Enrollment ID: I20141020001554

Medical Identifiers

Medical identifiers for Pei Lily Mulroy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1568892115NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist 20A13031 (California)Primary
207Q00000XFamily Medicine 20A13031 (California)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Vitas Healthcare Corporation Of CaliforniaSan diego, CAHospice
Los Alamitos Medical CenterLos alamitos, CAHospital
Lakewood Regional Medical CenterLakewood, CAHospital
University Of California Irvine Medical CenterOrange, CAHospital
Long Beach Memorial Medical CenterLong beach, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Prohealth Partners, A Medical Group2769388412237

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. Pei Lily Mulroy allows following entities to bill medicare on her behalf.
Entity NameProhealth Partners, A Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003949975
PECOS PAC ID: 2769388412
Enrollment ID: O20031211000927
Entity NamePioneer Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548303589
PECOS PAC ID: 1759317696
Enrollment ID: O20050712001246

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. Pei Lily Mulroy 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
Pei Lily Mulroy, DO
1606 Beech Ave,
Torrance, CA 90501-3116

Ph: (415) 412-8665		Pei Lily Mulroy, DO
3751 Katella Ave,
Los Alamitos, CA 90720-3113

Ph: (562) 246-6822

Reviews and Comments


Hospitalist Doctors in Los Alamitos, CA


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.