KATHERINE MERCELIA MACKENZIE MD
NPI 1194963959
Psychiatry & Neurology - Neurology with Special Qualifications in Child Neurology in Palo Alto, CA
About Katherine Mercelia Mackenzie Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHERINE MERCELIA MACKENZIE MD (NPI 1194963959) is an individual neurology with special qualifications in child neurology provider in Palo Alto, California, licensed in California (A104126) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Katherine Mercelia Mackenzie Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Katherine Mackenzie reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94304
- Reassigned Medicare billing, California enrollment
- 3,617 clinicians in this Medicare group
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 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 94304 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.
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 Katherine Mackenzie's NPI number?
The NPI number for Katherine Mackenzie is 1194963959. It was assigned to this individual provider in the NPPES registry on January 30, 2009.
Where is Katherine Mackenzie located?
Katherine Mackenzie practices at 725 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 497-8000.
What is Katherine Mackenzie's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology with Special Qualifications in Child Neurology, with taxonomy code 2084N0402X.
Is Katherine Mackenzie enrolled in Medicare?
Yes. Katherine Mackenzie is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Katherine Mackenzie's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Mackenzie reassigns Medicare benefits to 2 organizations: Lpch Medical Group Div Of Lucile (Palo Alto, CA) and Stanford Health Care (Stanford, 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 Katherine Mackenzie'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 Katherine Mackenzie was last updated on November 10, 2023. 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.
# Katherine Mercelia Mackenzie, MD · NPI 1194963959
Neurology with Special Qualifications in Child Neurology physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since January 30, 2009.
## Identity
- **NPI:** 1194963959 (Entity type: Individual)
- **Enumerated:** January 30, 2009
- **Primary specialty:** Psychiatry & Neurology - Neurology with Special Qualifications in Child Neurology · taxonomy 2084N0402X
- **State license:** A104126 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 725 WELCH RD, Palo Alto, CA 94304-1601
- **Phone:** (650) 497-8000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Lpch Medical Group Div Of Lucile (NPI 1417907940, Palo Alto, CA); Stanford Health Care (NPI 1437292927, Stanford, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 10, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1194963959) · Data from the CMS NPPES public registry.