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PAUL MAISTROS, M.D.,INC.
NPI 1932382553
Psychiatry & Neurology - Sleep Medicine in Fountain Valley, CA

Active since December 06, 2007
11160 WARNER AVENUE, SUITE 121, FOUNTAIN VALLEY, CA 92708(714) 437-1246(714) 437-1354 Get Directions Write a Review

NPPES record last updated: December 6, 2007. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Paul Maistros, M.d.,inc. NPPES

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

PAUL MAISTROS, M.D.,INC. (NPI 1932382553) is a healthcare organization registered as a sleep medicine in Fountain Valley, California and active in the NPI registry since December 2007. The organization lists Susan Ortiz, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1932382553
Entity TypeOrganization
Primary Taxonomy2084S0012X
Legal Business NamePAUL MAISTROS, M.D.,INC.
Location Address11160 WARNER AVENUE, SUITE 121Fountain Valley, CA 92708
Mailing AddressP.o. Box 20139Fountain Valley, CA 92708 · (714) 437-1246 · Fax (714) 437-1354
Phone(714) 437-1246
Fax(714) 437-1354
Organization SubpartNo
Authorized OfficialSusan OrtizOffice Manager · (714) 437-1246
Enumeration DateDecember 6, 2007
✔ NPI 1932382553 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2084S0012X
License✔ Licensed in CA · A44496
Definition
A Psychiatrist or Neurologist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.
11160 WARNER AVENUE, Fountain Valley, CA 92708
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Other Identifiers 2

Medicare UPINE73331CA
Medicaid00A444961CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Paul Maistros, M.d.,inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by February 28, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20080718000342Non-DME Part B · Clinic/Group PracticeDue dateFebruary 28, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Paul Maistros, M.D.,inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Paul Maistros, M.D.
Neurology
NPI 1275532301
11160 WARNER AVE SUITE 121
Fountain Valley, CA 92708
(714) 437-1246
✔ PECOS✔ Accepts Medicare0.1 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 Paul Maistros, M.D.,inc.'s NPI number?

The NPI number for Paul Maistros, M.D.,inc. is 1932382553. It was assigned to this organization in the NPPES registry on December 6, 2007.

Where is Paul Maistros, M.D.,inc. located?

Paul Maistros, M.D.,inc. is located at 11160 Warner Avenue Suite 121, Fountain Valley, CA 92708. The listed phone number is (714) 437-1246.

What is Paul Maistros, M.D.,inc.'s specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Sleep Medicine, with taxonomy code 2084S0012X.

Is Paul Maistros, M.D.,inc. enrolled in Medicare?

Yes. Paul Maistros, M.D.,inc. is registered in the Medicare PECOS enrollment system.

When is Paul Maistros, M.D.,inc.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Paul Maistros, M.D.,inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Neurology) reassigns their Medicare billing to Paul Maistros, M.D.,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 Paul Maistros, M.D.,inc. was last updated on December 6, 2007. 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.