MARGARET MAHAFFA
NPI 1215557426
Emergency Medicine in Walnut Creek, CA
About Margaret Mahaffa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET MAHAFFA (NPI 1215557426) is an individual emergency medicine provider in Walnut Creek, California, licensed in California (A186494) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Buffalo, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Margaret Mahaffa is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94596 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94596
WALNUT CREEK, CA 94596
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Margaret Mahaffa's NPI number?
The NPI number for Margaret Mahaffa is 1215557426. It was assigned to this individual provider in the NPPES registry on April 17, 2020.
Where is Margaret Mahaffa located?
Margaret Mahaffa practices at 1425 S Main St, Walnut Creek, CA 94596. The listed phone number is (925) 295-4000.
What is Margaret Mahaffa's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Margaret Mahaffa enrolled in Medicare?
Yes. Margaret Mahaffa is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Margaret Mahaffa was last updated on August 2, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Margaret Mahaffa · NPI 1215557426
Emergency Medicine physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since April 17, 2020.
## Identity
- **NPI:** 1215557426 (Entity type: Individual)
- **Enumerated:** April 17, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A186494 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1425 S MAIN ST, Walnut Creek, CA 94596-5318
- **Phone:** (925) 295-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** August 2, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1215557426) · Data from the CMS NPPES public registry.