MARY HAYWOOD DO
NPI 1184121501
Pediatrics - Pediatric Emergency Medicine in Phoenix, AZ
About Mary Haywood Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY HAYWOOD DO (NPI 1184121501) is an individual pediatric emergency medicine provider in Phoenix, Arizona, licensed in Arizona (011212) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Kansas City, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mary Haywood Do 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.
Medicare Billing Reassignments
2Medicare enrollment records show Mary Haywood reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85016
- Reassigned Medicare billing, Arizona enrollment
- 1,416 clinicians in this Medicare group
Kansas City, MO 64108
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: The Childrens Mercy Hospital
- 603 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
PHOENIX, AZ 85016
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 Mary Haywood's NPI number?
The NPI number for Mary Haywood is 1184121501. It was assigned to this individual provider in the NPPES registry on April 11, 2018.
Where is Mary Haywood located?
Mary Haywood practices at 1919 E Thomas Rd, Phoenix, AZ 85016. The listed phone number is (602) 933-1000.
What is Mary Haywood's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.
Is Mary Haywood enrolled in Medicare?
Yes. Mary Haywood 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.
Which organizations bill Medicare for Mary Haywood's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Haywood reassigns Medicare benefits to 2 organizations: Phoenix Children's Hospital (Phoenix, AZ) and The Children's Mercy Hospital (Kansas City, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Haywood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Haywood accept?
Health plans from Antidote Health Plan of Arizona, Inc. and Imperial Insurance Companies, Inc. list Mary Haywood as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mary Haywood was last updated on September 3, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Mary Haywood, DO · NPI 1184121501
Pediatric Emergency Medicine physician in Phoenix, Arizona. Individual provider, active in the CMS NPPES registry since April 11, 2018.
## Identity
- **NPI:** 1184121501 (Entity type: Individual)
- **Enumerated:** April 11, 2018
- **Primary specialty:** Pediatrics - Pediatric Emergency Medicine · taxonomy 2080P0204X
- **State license:** 011212 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 1919 E THOMAS RD, Phoenix, AZ 85016-7710
- **Phone:** (602) 933-1000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Phoenix Children's Hospital (NPI 1922112044, Phoenix, AZ); The Children's Mercy Hospital (NPI 1851437719, Kansas City, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** September 3, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1184121501) · Data from the CMS NPPES public registry.