DR. HEIDEMARIE ERNST M.D.
NPI 1790819472
Psychiatry & Neurology - Psychiatry in Menlo Park, CA
About Dr. Heidemarie Ernst M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HEIDEMARIE ERNST M.D. (NPI 1790819472) is an individual psychiatry provider in Menlo Park, California, licensed in California (A73163) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Redwood City, and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Dr. Heidemarie Ernst M.d. 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 Heidemarie Ernst reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Menlo Park, CA 94025
- Reassigned Medicare billing, California enrollment
- 597 clinicians in this Medicare group
San Jose, CA 95131
- Reassigned Medicare billing, California enrollment
- 21 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 94025 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MENLO PARK, CA 94025
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 Heidemarie Ernst's NPI number?
The NPI number for Heidemarie Ernst is 1790819472. It was assigned to this individual provider in the NPPES registry on March 15, 2007.
Where is Heidemarie Ernst located?
Heidemarie Ernst practices at 1220 University Dr Ste 103, Menlo Park, CA 94025. The listed phone number is (650) 323-1317.
What is Heidemarie Ernst's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Heidemarie Ernst enrolled in Medicare?
Yes. Heidemarie Ernst 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 Heidemarie Ernst's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Heidemarie Ernst reassigns Medicare benefits to 2 organizations: County Of San Mateo (Menlo Park, CA) and Community Solutions For Children, Families And Individuals (San Jose, 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 Heidemarie Ernst'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 Heidemarie Ernst was last updated on March 22, 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.
# Dr. Heidemarie Ernst, M.D. · NPI 1790819472
Psychiatry physician in Menlo Park, California. Individual provider, active in the CMS NPPES registry since March 15, 2007.
## Identity
- **NPI:** 1790819472 (Entity type: Individual)
- **Enumerated:** March 15, 2007
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** A73163 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1220 UNIVERSITY DR STE 103, Menlo Park, CA 94025-4265
- **Phone:** (650) 323-1317
## 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): County Of San Mateo (NPI 1336239052, Menlo Park, CA); Community Solutions For Children, Families And Individuals (NPI 1699927319, San Jose, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** March 22, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1790819472) · Data from the CMS NPPES public registry.