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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

GRETCHEN LOUISE SELBY LMSW
NPI 1457396137
Social Worker in Los Alamos, NM

Active since June 18, 2006Opted out of Medicare · through Jan 1, 2027
1505 15TH ST, LOS ALAMOS, NM 87544(505) 662-3264(505) 662-9707 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Gretchen Louise Selby Lmsw NPPES

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

GRETCHEN LOUISE SELBY LMSW (NPI 1457396137) is an individual social worker in Los Alamos, New Mexico, licensed in New Mexico (M-057777) and active in the NPI registry since June 2006. She has opted out of Medicare through January 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1457396137
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameGRETCHEN LOUISE SELBYCredential: LMSW
Location Address1505 15TH STLos Alamos, NM 87544-3000
Mailing Address1505 15th StLos Alamos, NM 87544-3000 · (505) 662-3264 · Fax (505) 662-9707
Phone(505) 662-3264
Fax(505) 662-9707
Sole ProprietorNo
Enumeration DateJune 18, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1457396137 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in NM · M-057777
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
1505 15TH ST, Los Alamos, NM 87544
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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

Gretchen Louise Selby Lmsw 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 January 1, 2013 through January 1, 2027.

Opt-Out Effective DateJanuary 1, 2013
Opt-Out In Effect ThroughJanuary 1, 2027Opt-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.

Other Providers at the Same Location NPPES 5

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

ARACELI MARIA CASTILLO LISW
Social Worker
1505 15TH ST, SUITE A
LOS ALAMOS, NM 87544
Los Alamos County (505) 662-3264
STEVEN KOCH M.A., LPCC
Counselor (Professional)
1505 15TH ST, SUITE C
LOS ALAMOS, NM 87544
Los Alamos County (505) 662-3264
MR. RICK L CHURCH L.P.C.C.
Counselor (Mental Health)
1505 15TH ST
LOS ALAMOS, NM 87544
Los Alamos County (505) 662-3264
MS. LAVERNE L RODRIGUEZ LMSW
Social Worker (Clinical)
1505 15TH ST, SUITE A
LOS ALAMOS, NM 87544
Los Alamos County (505) 662-3264
AMANDA STOREY MA, LPCC
Counselor (Mental Health)
1505 15TH ST, SUITE C
LOS ALAMOS, NM 87544
Los Alamos County (505) 662-3264

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 Gretchen Selby's NPI number?

The NPI number for Gretchen Selby is 1457396137. It was assigned to this individual provider in the NPPES registry on June 18, 2006.

Where is Gretchen Selby located?

Gretchen Selby practices at 1505 15th St, Los Alamos, NM 87544. The listed phone number is (505) 662-3264.

What is Gretchen Selby's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Gretchen Selby enrolled in Medicare?

No. Gretchen Selby has opted out of Medicare through January 1, 2027. 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.

When was this NPI record last updated?

The NPPES record for Gretchen Selby was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.