Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Pei Lily Mulroy, DO

Individual provider Family Medicine Physician · NPI 1568892115

Pei Lily Mulroy, DO is a Hospitalist in Orange, California. Qualified in 2012, 14 years ago. Practices with The Regents of the University of California-Irvine, a 104-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
14
Licensed in
CA
In the registry since
2013
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

101 The City Dr S
Orange, CA 92868-3201
Phone: (714) 456-8888
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3751 Katella Ave, Los Alamitos, CA 90720-3113 — (562) 246-6822

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 20A13031 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 20A13031 (CA)

Record details

NPI number1568892115
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedNovember 19, 2013
Last updated in NPPESMay 11, 2026
Certification dateMay 11, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Also practisesFAMILY PRACTICE
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice The Regents Of The University Of California-Irvine — 104 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients294
Services billed 1,136 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at The Regents of the University of California-Irvine

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 104 clinicians in the practice; 12 are shown here.

Other providers in Orange