MS. TRACY ANN SIEGFRIED M.D.
NPI 1366598591
Internal Medicine in Laguna Hills, CA
About Ms. Tracy Ann Siegfried M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. TRACY ANN SIEGFRIED M.D. (NPI 1366598591) is an individual internal medicine provider in Laguna Hills, California, licensed in California (A62919) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Laguna Hills, and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Tracy Ann Siegfried M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Tracy Siegfried reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- 86 clinicians in this Medicare group
Laguna Hills, CA 92653
- Reassigned Medicare billing, California enrollment
- 22 clinicians in this Medicare group
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 2,052 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 8
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92637 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Tracy Siegfried's NPI number?
The NPI number for Tracy Siegfried is 1366598591. It was assigned to this individual provider in the NPPES registry on January 29, 2007.
Where is Tracy Siegfried located?
Tracy Siegfried practices at 24331 El Toro Rd Ste 330, Laguna Hills, CA 92637. The listed phone number is (949) 716-0833.
What is Tracy Siegfried's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Tracy Siegfried enrolled in Medicare?
Yes. Tracy Siegfried is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Tracy Siegfried's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tracy Siegfried reassigns Medicare benefits to 3 organizations: Saddleback Medical Group Inc (Laguna Hills, CA), Scke, Inc (Laguna Hills, CA) and Healthcare Partners Affiliates Medical Group (Tustin, CA). 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 Tracy Siegfried'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 Tracy Siegfried was last updated on July 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Ms. Tracy Ann Siegfried, M.D. · NPI 1366598591
Internal Medicine physician in Laguna Hills, California. Individual provider, active in the CMS NPPES registry since January 29, 2007.
## Identity
- **NPI:** 1366598591 (Entity type: Individual)
- **Enumerated:** January 29, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A62919 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 24331 EL TORO RD STE 330, Laguna Hills, CA 92637-2754
- **Phone:** (949) 716-0833 · **Fax:** (949) 716-0830
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Saddleback Medical Group Inc (NPI 1386605822, Laguna Hills, CA); Scke, Inc (NPI 1831144104, Laguna Hills, CA); Healthcare Partners Affiliates Medical Group (NPI 1891981502, Tustin, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** July 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1366598591) · Data from the CMS NPPES public registry.