DR. MICHEL-ANN R DIAS M.D.
NPI 1154557890
Surgery in Yreka, CA

Q: What is Michel-ann Dias's NPI number?

The NPI number for Michel-ann Dias is 1154557890. It was assigned to this individual provider in the NPPES registry on June 9, 2009.

Q: What is Michel-ann Dias's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Michel-ann Dias was last updated on July 5, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since June 09, 2009PECOS Enrolled

475 BRUCE ST, YREKA, CA 96097(732) 306-6507 Get Directions Write a Review

NPPES record last updated: July 5, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Michel-ann R Dias M.d. NPPES

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

DR. MICHEL-ANN R DIAS M.D. (NPI 1154557890) is an individual surgery provider in Yreka, California, licensed in California (A117271) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1154557890

Entity TypeIndividualFemale

Primary Taxonomy208600000X

Provider Legal NameDR. MICHEL-ANN R DIASCredential: M.D.

Location Address475 BRUCE STYreka, CA 96097-3474

Mailing Address475 Bruce StYreka, CA 96097-3474 · (732) 306-6507

Phone(732) 306-6507

Sole ProprietorYes

Enumeration DateJune 9, 2009

Last NPPES UpdateJuly 5, 2016

✔ NPI 1154557890 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in CA · A117271

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

475 BRUCE ST, Yreka, CA 96097

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Michel-ann R Dias M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Michel-ann Dias reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Siskiyou Hospital, Inc.

0.1 mi

Critical Access

444 BRUCE ST
Yreka, CA 96097

Reassigned Medicare billing, California enrollment
140 clinicians in this Medicare group

NPI 1093892275 (530) 842-4121

Signify Health Medical Associates Of California, PC

271 mi

General Practice

505 MONTGOMERY ST, FL 10 & 11
San Francisco, CA 94111

Reassigned Medicare billing, California enrollment
407 clinicians in this Medicare group

NPI 1124685169 (972) 715-3800

Signify Health Medical Associates, PLLC

1,537 mi

General Practice

4055 VALLEY VIEW LN STE 700
Dallas, TX 75244

Reassigned Medicare billing, Washington enrollment
317 clinicians in this Medicare group

NPI 1750845863 (972) 715-3800

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96097 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$90.32 typical visit price

range $58.87 – $176.60

Typical copayment $22.58 (range $14.71 – $44.15)

Most-billed visit code 99203

Established Patient

$73.16 typical visit price

range $19.28 – $144.60

Typical copayment $18.29 (range $4.82 – $36.15)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

JEAN L. WEATHERS R.N. , C.M.W.

Nurse Practitioner (Obstetrics & Gynecology)

475 BRUCE ST
YREKA, CA 96097

Siskiyou County (530) 842-4337

RICHARD SLARVE M.D.

Family Medicine

475 BRUCE ST
YREKA, CA 96097

Siskiyou County (530) 842-3507

JON EDWIN MUNDALL MD

Family Medicine

475 BRUCE ST, SUITE 700
YREKA, CA 96097

Siskiyou County (530) 842-4445

MS. CHARDILAINE WHITLOCK FNP-C

Nurse Practitioner (Family)

475 BRUCE ST
YREKA, CA 96097

Siskiyou County (530) 842-4121

MRS. CHARITY ANN BRADLEY FNP

Nurse Practitioner (Family)

475 BRUCE ST
YREKA, CA 96097

Siskiyou County (530) 841-4980

PETER A. BEORIS MD

Emergency Medicine

475 BRUCE ST
YREKA, CA 96097

Siskiyou County (530) 842-3507

SISKIYOU HOSPITAL INC

Dental Hygienist

475 BRUCE ST
YREKA, CA 96097

Siskiyou County (530) 842-3507

JUSTIN HADALLER

Physician Assistant

475 BRUCE ST
YREKA, CA 96097

Siskiyou County (530) 842-4121

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 Michel-ann Dias's NPI number?

The NPI number for Michel-ann Dias is 1154557890. It was assigned to this individual provider in the NPPES registry on June 9, 2009.

Where is Michel-ann Dias located?

Michel-ann Dias practices at 475 Bruce St, Yreka, CA 96097. The listed phone number is (732) 306-6507.

What is Michel-ann Dias's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Michel-ann Dias enrolled in Medicare?

Yes. Michel-ann Dias is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Michel-ann Dias's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michel-ann Dias reassigns Medicare benefits to 3 organizations: Siskiyou Hospital, Inc. (Yreka, CA), Signify Health Medical Associates Of California, PC (San Francisco, CA) and Signify Health Medical Associates, PLLC (Dallas, TX). Each 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 Michel-ann Dias's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michel-ann Dias was last updated on July 5, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.