DR. GREGORY TODD THIER MD
NPI 1922088558
Family Medicine in Anaheim, CA

Q: What is Gregory Thier's NPI number?

The NPI number for Gregory Thier is 1922088558. It was assigned to this individual provider in the NPPES registry on January 19, 2006.

Q: What is Gregory Thier'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 Gregory Thier was last updated on October 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 January 19, 2006PECOS Enrolled

1038 S SUNSTREAM LN, ANAHEIM, CA 92808(843) 540-3114 Get Directions Write a Review

NPPES record last updated: October 23, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Dr. Gregory Todd Thier Md NPPES

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

DR. GREGORY TODD THIER MD (NPI 1922088558) is an individual family medicine provider in Anaheim, California, licensed in California (A65305) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922088558

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. GREGORY TODD THIERCredential: MD

Location Address1038 S SUNSTREAM LNAnaheim, CA 92808-2517

Mailing Address1038 S Sunstream LnAnaheim, CA 92808-2517

Phone(843) 540-3114

Sole ProprietorNo

Enumeration DateJanuary 19, 2006

Last NPPES UpdateOctober 23, 2025

NPPES CertifiedOctober 23, 2025

✔ NPI 1922088558 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 · A65305

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.

1038 S SUNSTREAM LN, Anaheim, CA 92808

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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. Gregory Todd Thier Md 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 Gregory Thier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

American Current Care Of California, A Medical Corporation

17 mi

Urgent Care

40 CENTERPOINTE DR
La Palma, CA 90623

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

NPI 1932534609 (714) 522-8020

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 92808 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 Gregory Thier's NPI number?

The NPI number for Gregory Thier is 1922088558. It was assigned to this individual provider in the NPPES registry on January 19, 2006.

Where is Gregory Thier located?

Gregory Thier practices at 1038 S Sunstream Ln, Anaheim, CA 92808. The listed phone number is (843) 540-3114.

What is Gregory Thier's specialty?

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

Is Gregory Thier enrolled in Medicare?

Yes. Gregory Thier is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gregory Thier's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Thier reassigns Medicare benefits to American Current Care Of California, A Medical Corporation (La Palma, 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 Gregory Thier'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 Gregory Thier was last updated on October 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.