Heidemarie Ernst, M.D.
NPI 1790819472 · Psychiatry Physician · Menlo Park, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Heidemarie Ernst, M.D. is a Psychiatry Physician provider in Menlo Park, CA (NPI 1790819472).
Provider details
- NPI number
- 1790819472
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A73163 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Quetiapine Fumarate | 53 |
| Gabapentin | 48 |
| Mirtazapine | 38 |
| Trazodone Hcl | 36 |
| Lorazepam | 35 |
| Bupropion Hclbrand: Bupropion Hcl Sr | 26 |
| Clonazepam | 24 |
| Lamotrigine | 21 |
| Fluoxetine Hcl | 21 |
Practice location
Mailing address
Additional practice locations (1)
- 802 Brewster AveRedwood City, CA 94063-1510Phone: (650) 363-4111
Registry dates
- Enumerated
- 2007-03-15
- Last updated
- 2023-03-22
- Certified
- 2023-03-22
Frequently asked questions
- What is Heidemarie Ernst's NPI number?
- Heidemarie Ernst's National Provider Identifier (NPI) is 1790819472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Heidemarie Ernst's specialty?
- Heidemarie Ernst is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Heidemarie Ernst located?
- Heidemarie Ernst's practice location on file with NPPES is 1220 University Dr Ste 103, Menlo Park, CA 94025-4265.
- What is Heidemarie Ernst's phone number?
- The practice phone number listed in the NPPES registry for Heidemarie Ernst is (650) 323-1317.
- Does Heidemarie Ernst accept Medicare?
- Heidemarie Ernst is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Heidemarie Ernst's NPI active?
- Yes — Heidemarie Ernst's NPI (1790819472) is active in the NPPES registry as of the last update on 2023-03-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.