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HELEN STOSEL MD INC
NPI 1366646986
Internal Medicine - Endocrinology, Diabetes & Metabolism in Mission Viejo, CA

Active since June 14, 2007
26047 ACERO, SUITE 110, MISSION VIEJO, CA 92691(949) 951-7100(949) 951-7110 Get Directions Write a Review

NPPES record last updated: April 1, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Helen Stosel Md Inc NPPES

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

HELEN STOSEL MD INC (NPI 1366646986) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Mission Viejo, California and active in the NPI registry since June 2007. The organization lists Helen Stosel, Owner, as its authorized official.

NPPES Registry Identity

NPI1366646986
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NameHELEN STOSEL MD INC
Location Address26047 ACERO, SUITE 110Mission Viejo, CA 92691-7950
Mailing Address26047 Acero, Suite 110Mission Viejo, CA 92691-7950 · (949) 951-7100 · Fax (949) 951-7110
Phone(949) 951-7100
Fax(949) 951-7110
Organization SubpartNo
Authorized OfficialHelen StoselOwner · (949) 951-7100
Enumeration DateJune 14, 2007
Last NPPES UpdateApril 1, 2008
✔ NPI 1366646986 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · G68931
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
26047 ACERO, Mission Viejo, CA 92691
Open in Google Maps ↗

Other Identifiers 4

OtherW20990CA · Group Ptan
Medicare PINWG68931DCA
Medicaid00G689310CA
Medicare UPINF14004CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Helen Stosel Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Helen Stosel MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Helen Stosel, M.D.
Endocrinology
NPI 1952337362
25910 ACERO STE 250
Mission Viejo, CA 92691
(949) 951-7100
✔ PECOS0.2 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Helen Stosel MD Inc's NPI number?

The NPI number for Helen Stosel MD Inc is 1366646986. It was assigned to this organization in the NPPES registry on June 14, 2007.

Where is Helen Stosel MD Inc located?

Helen Stosel MD Inc is located at 26047 Acero Suite 110, Mission Viejo, CA 92691. The listed phone number is (949) 951-7100.

What is Helen Stosel MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Helen Stosel MD Inc enrolled in Medicare?

Yes. Helen Stosel MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Helen Stosel MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Endocrinology) reassigns their Medicare billing to Helen Stosel MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Helen Stosel MD Inc was last updated on April 1, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.