SIENNA SABLAN GO M.D.
NPI 1295759298
Family Medicine in Costa Mesa, CA

Q: What is Sienna Go's NPI number?

The NPI number for Sienna Go is 1295759298. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Q: What is Sienna Go's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Sienna Go was last updated on December 4, 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.

Active since July 26, 2006PECOS Enrolled

1 MARK LN, COSTA MESA, CA 92626(714) 457-4545(714) 957-5520 Get Directions Write a Review

NPPES record last updated: December 4, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Sienna Sablan Go M.d. NPPES

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

SIENNA SABLAN GO M.D. (NPI 1295759298) is an individual family medicine provider in Costa Mesa, California, licensed in California (A053859) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295759298

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameSIENNA SABLAN GOCredential: M.D.

Location Address1 MARK LNCosta Mesa, CA 92626-6718

Mailing Address1 Mark LnCosta Mesa, CA 92626-6718 · (714) 457-4545 · Fax (714) 957-5520

Phone(714) 457-4545

Fax(714) 957-5520

Sole ProprietorNo

Enumeration DateJuly 26, 2006

Last NPPES UpdateDecember 4, 2025

NPPES CertifiedDecember 4, 2025

✔ NPI 1295759298 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in CA · A053859

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

1 MARK LN, Costa Mesa, CA 92626

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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)

Sienna Sablan Go 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 Reassignment

Medicare enrollment records show Sienna Go reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

State Of California - Department Of Developmental Services

0.1 mi

General Acute Care Hospital

2501 HARBOR BLVD
Costa Mesa, CA 92626

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

NPI 1225089592 (714) 957-5000

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 92626 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

Most-billed visit code 99214

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

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 Sienna Go's NPI number?

The NPI number for Sienna Go is 1295759298. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is Sienna Go located?

Sienna Go practices at 1 Mark Ln, Costa Mesa, CA 92626. The listed phone number is (714) 457-4545.

What is Sienna Go's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Sienna Go enrolled in Medicare?

Yes. Sienna Go is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sienna Go's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sienna Go reassigns Medicare benefits to State Of California - Department Of Developmental Services (Costa Mesa, CA). The 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 Sienna Go'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 Sienna Go was last updated on December 4, 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.