Tracy Siegfried, M.D.
NPI 1366598591 · Internal Medicine Physician · Laguna Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tracy Siegfried, M.D. is a Internal Medicine Physician provider in Laguna Hills, CA (NPI 1366598591).
Provider details
- NPI number
- 1366598591
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A62919 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,081 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 438 | $138 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 231 | $27 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 221 | $140 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 105 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 26 | $98 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 104 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 534 | 155 |
| Levothyroxine Sodium | 483 | 135 |
| Amlodipine Besylate | 395 | 114 |
| Losartan Potassium | 321 | 87 |
| Rosuvastatin Calcium | 243 | 84 |
| Lisinopril | 235 | 63 |
| Simvastatin |
Practice location
Mailing address
Additional practice locations (1)
- 24221 Calle De La LouisaSuite 400Laguna Hills, CA 92653-7638Phone: (949) 465-8155Fax: (949) 465-8159
Registry dates
- Enumerated
- 2007-01-29
- Last updated
- 2025-11-28
- Certified
- 2025-11-28
Frequently asked questions
- What is Tracy Siegfried's NPI number?
- Tracy Siegfried's National Provider Identifier (NPI) is 1366598591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tracy Siegfried's specialty?
- Tracy Siegfried is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tracy Siegfried located?
- Tracy Siegfried's practice location on file with NPPES is 24331 El Toro Rd Ste 330, Laguna Hills, CA 92637-2754.
- What is Tracy Siegfried's phone number?
- The practice phone number listed in the NPPES registry for Tracy Siegfried is (949) 716-0833.
- Does Tracy Siegfried accept Medicare?
- Tracy Siegfried is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tracy Siegfried's NPI active?
- Yes — Tracy Siegfried's NPI (1366598591) is active in the NPPES registry as of the last update on 2025-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.