Garrett Halweg, M.D.
NPI 1982844064 · Psychiatry Physician · Corona Del Mar, CA
Garrett Halweg, M.D. is a Psychiatry Physician provider in Corona Del Mar, CA (NPI 1982844064).
Provider details
- NPI number
- 1982844064
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A73217 (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
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 38 |
| Escitalopram Oxalate | 23 |
| Propranolol Hcl | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-03-02
- Last updated
- 2009-03-02
Frequently asked questions
- What is Garrett Halweg's NPI number?
- Garrett Halweg's National Provider Identifier (NPI) is 1982844064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garrett Halweg's specialty?
- Garrett Halweg is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Garrett Halweg located?
- Garrett Halweg's practice location on file with NPPES is 2600 E Coast Hwy, Corona Del Mar, CA 92625-2117.
- What is Garrett Halweg's phone number?
- The practice phone number listed in the NPPES registry for Garrett Halweg is (949) 338-1865.
- Is Garrett Halweg's NPI active?
- Yes — Garrett Halweg's NPI (1982844064) is active in the NPPES registry as of the last update on 2009-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.