MICHAEL L HAYDON MD
NPI 1679584676
Obstetrics & Gynecology - Maternal & Fetal Medicine in Irvine, CA
About Michael L Haydon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL L HAYDON MD (NPI 1679584676) is an individual maternal & fetal medicine provider in Irvine, California, licensed in California (A78308) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Michael L Haydon Md 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 Michael Haydon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newport Beach, CA 92663
- Reassigned Medicare billing, California enrollment
- 529 clinicians in this Medicare group
Long Beach, CA 90806
- Reassigned Medicare billing, California enrollment
- 191 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92618 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IRVINE, CA 92618
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 Michael Haydon's NPI number?
The NPI number for Michael Haydon is 1679584676. It was assigned to this individual provider in the NPPES registry on August 11, 2006.
Where is Michael Haydon located?
Michael Haydon practices at 16305 Sand Canyon Ave Ste 225, Irvine, CA 92618. The listed phone number is (714) 488-6690.
What is Michael Haydon's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Michael Haydon enrolled in Medicare?
Yes. Michael Haydon 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 Michael Haydon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Haydon reassigns Medicare benefits to 2 organizations: Hoag Clinic (Newport Beach, CA) and Magella Medical Group, Inc. (Long Beach, CA). 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 Michael Haydon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Haydon was last updated on September 27, 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.
# Michael L Haydon, MD · NPI 1679584676
Maternal & Fetal Medicine physician in Irvine, California. Individual provider, active in the CMS NPPES registry since August 11, 2006.
## Identity
- **NPI:** 1679584676 (Entity type: Individual)
- **Enumerated:** August 11, 2006
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** A78308 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 16305 SAND CANYON AVE STE 225, Irvine, CA 92618-3795
- **Phone:** (714) 488-6690
## 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): Hoag Clinic (NPI 1942799523, Newport Beach, CA); Magella Medical Group, Inc. (NPI 1376640086, Long Beach, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 2000
## Record status
- **NPPES last updated:** September 27, 2024
- **Other identifiers:** Medicaid 00A783080 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1679584676) · Data from the CMS NPPES public registry.