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DANIELLE ALEXANDRA LENAHAN MD
NPI 1417583345
Psychiatry & Neurology - Psychiatry in Santa Monica, CA

Active since March 23, 2020Opted out of Medicare · through Aug 13, 2027
1112 MONTANA AVE STE C406, SANTA MONICA, CA 90403(323) 686-1551 Get Directions Write a Review

NPPES record last updated: February 11, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 17, 2025, Apr 11, 2024, Mar 10, 2022 and 1 more (4 updates tracked since 2020).

About Danielle Alexandra Lenahan Md NPPES

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

DANIELLE ALEXANDRA LENAHAN MD (NPI 1417583345) is an individual psychiatry provider in Santa Monica, California, licensed in California (A182032) and active in the NPI registry since March 2020. She has opted out of Medicare through August 13, 2027 and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1417583345
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameDANIELLE ALEXANDRA LENAHANCredential: MD
Location Address1112 MONTANA AVE STE C406Santa Monica, CA 90403-1652
Mailing Address1112 Montana Ave Ste C406Santa Monica, CA 90403-1652 · (323) 686-1551
Phone(323) 686-1551
Sole ProprietorNo
Enumeration DateMarch 23, 2020
Last NPPES UpdateFebruary 11, 20264 updates tracked since enumeration
NPPES CertifiedFebruary 11, 2026
✔ NPI 1417583345 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 · A182032
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.
1112 MONTANA AVE STE C406, Santa Monica, CA 90403
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Secondary Practice Locations 2

Location 11925 E Dakota AveFresno, CA 93726-4821 · Phone (323) 686-1551
Location 210323 Santa Monica Blvd Ste 111Los Angeles, CA 90025-5056 · Phone (323) 897-1125 · Fax (971) 233-6443

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Danielle Alexandra Lenahan Md 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 August 13, 2025 through August 13, 2027.

Opt-Out Effective DateAugust 13, 2025
Opt-Out In Effect ThroughAugust 13, 2027Opt-out affidavits renew automatically every two years unless cancelled

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 Danielle Lenahan's NPI number?

The NPI number for Danielle Lenahan is 1417583345. It was assigned to this individual provider in the NPPES registry on March 23, 2020.

Where is Danielle Lenahan located?

Danielle Lenahan practices at 1112 Montana Ave Ste C406, Santa Monica, CA 90403. The listed phone number is (323) 686-1551.

What is Danielle Lenahan's specialty?

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

Is Danielle Lenahan enrolled in Medicare?

No. Danielle Lenahan has opted out of Medicare through August 13, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Danielle Lenahan was last updated on February 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.