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DR. GARRETT M HALWEG M.D.
NPI 1982844064
Psychiatry & Neurology - Psychiatry in Corona Del Mar, CA

Active since March 02, 2009Opted out of Medicare · through Nov 17, 2026
2600 E COAST HWY, SUITE 150, CORONA DEL MAR, CA 92625(949) 338-1865 Get Directions Write a Review

NPPES record last updated: March 2, 2009. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Garrett M Halweg M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GARRETT M HALWEG M.D. (NPI 1982844064) is an individual psychiatry provider in Corona Del Mar, California, licensed in California (A73217) and active in the NPI registry since March 2009. He has opted out of Medicare through November 17, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1982844064
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. GARRETT M HALWEGCredential: M.D.
Location Address2600 E COAST HWY, SUITE 150Corona Del Mar, CA 92625-2117
Mailing AddressPo Box 1734Laguna Beach, CA 92652-1734 · (949) 338-1865
Phone(949) 338-1865
Sole ProprietorYes
Enumeration DateMarch 2, 2009
✔ NPI 1982844064 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A73217
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
2600 E COAST HWY, Corona Del Mar, CA 92625
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HMSA.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

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Opted out of Medicare

Dr. Garrett M Halweg M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from November 17, 2016 through November 17, 2026.

Opt-Out Effective DateNovember 17, 2016
Opt-Out In Effect ThroughNovember 17, 2026Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92625 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JEFFREY FRACALOSY DPT
Physical Therapist (Orthopedic)
2600 E COAST HWY
CORONA DEL MAR, CA 92625
Orange County (949) 640-2121
DR. WILLIAM S. FLANAGAN III L.AC.
Acupuncturist
2600 E COAST HWY, SUITE 150
CORONA DEL MAR, CA 92625
Orange County (949) 244-5170
MADELINE L MILLER MD A MEDICAL CORPORATION
Dermatology
2600 E COAST HWY, SUITE 200
CORONA DEL MAR, CA 92625
Orange County (949) 721-4161

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 Garrett Halweg's NPI number?

The NPI number for Garrett Halweg is 1982844064. It was assigned to this individual provider in the NPPES registry on March 2, 2009.

Where is Garrett Halweg located?

Garrett Halweg practices at 2600 E Coast Hwy Suite 150, Corona Del Mar, CA 92625. The listed phone number is (949) 338-1865.

What is Garrett Halweg's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Garrett Halweg enrolled in Medicare?

No. Garrett Halweg has opted out of Medicare through November 17, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

What insurance does Garrett Halweg accept?

Health plans from HMSA list Garrett Halweg as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Garrett Halweg was last updated on March 2, 2009. NPI Profile syncs with the weekly NPPES data releases published by CMS.