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MRS. ANN MARIE BOSS CNM
NPI 1376204503
Midwife in Rancho Palos Verdes, CA

Active since January 10, 2022Opted out of Medicare · through Nov 20, 2027
30057 AVENIDA TRANQUILA, RANCHO PALOS VERDES, CA 90275(310) 947-9902(424) 251-5972 Get Directions Write a Review

NPPES record last updated: August 20, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 8, 2025, Jan 10, 2022 (2 updates tracked since 2022).

About Mrs. Ann Marie Boss Cnm NPPES

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

MRS. ANN MARIE BOSS CNM (NPI 1376204503) is an individual midwife in Rancho Palos Verdes, California, licensed in California (1231) and active in the NPI registry since January 2022. She has opted out of Medicare through November 20, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1376204503
Entity TypeIndividualFemale
Primary Taxonomy176B00000X
Provider Legal NameMRS. ANN MARIE BOSSCredential: CNM
Location Address30057 AVENIDA TRANQUILARancho Palos Verdes, CA 90275-4514
Mailing Address30057 Avenida TranquilaRancho Palos Verdes, CA 90275-4514 · (310) 947-9902
Phone(310) 947-9902
Fax(424) 251-5972
Sole ProprietorYes
Enumeration DateJanuary 10, 2022
Last NPPES UpdateAugust 20, 20252 updates tracked since enumeration
NPPES CertifiedAugust 20, 2025
✔ NPI 1376204503 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyMidwifeOther Service Providers
Taxonomy Code176B00000X
License✔ Licensed in CA · 1231
Definition
A Midwife is a trained professional with special expertise in supporting women to maintain a healthy pregnancy birth, offering expert individualized care, education, counseling, and support to a woman and her newborn throughout the childbearing cycle. A Midwife is a skilled and independent practitioner who has undergone formalized training. Midwives are not required to be nurses and may be trained via multiple routes of education (apprenticeship, workshop, formal classes, or programs, etc., usually a combination). The educational background requirements and licensing requirements vary by state. The Midwife may or may not be certified by a state or national organization.
Also ListedAdvanced Practice MidwifeTaxonomy 367A00000X · License APRN-557-0 (HI)
30057 AVENIDA TRANQUILA, Rancho Palos Verdes, CA 90275
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Mrs. Ann Marie Boss Cnm 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 20, 2025 through November 20, 2027.

Opt-Out Effective DateNovember 20, 2025
Opt-Out In Effect ThroughNovember 20, 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.

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 Ann Boss's NPI number?

The NPI number for Ann Boss is 1376204503. It was assigned to this individual provider in the NPPES registry on January 10, 2022.

Where is Ann Boss located?

Ann Boss practices at 30057 Avenida Tranquila, Rancho Palos Verdes, CA 90275. The listed phone number is (310) 947-9902.

What is Ann Boss's specialty?

The primary specialty registered for this NPI is Midwife with taxonomy code 176B00000X.

Is Ann Boss enrolled in Medicare?

No. Ann Boss has opted out of Medicare through November 20, 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 Ann Boss was last updated on August 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.