Mark Tzagournis, MD
NPI 1689745580 · Family Medicine Physician · Anaheim, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Tzagournis, MD is a Family Medicine Physician provider in Anaheim, CA (NPI 1689745580).
Provider details
- NPI number
- 1689745580
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A75689 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 72 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 373 | 165 |
| Rosuvastatin Calcium | 218 | 95 |
| Amlodipine Besylate | 132 | 58 |
| Metoprolol Tartrate | 121 | 39 |
| Losartan Potassium | 120 | 54 |
| Atenolol | 115 | 41 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2021-11-29
Frequently asked questions
- What is Mark Tzagournis's NPI number?
- Mark Tzagournis's National Provider Identifier (NPI) is 1689745580, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Tzagournis's specialty?
- Mark Tzagournis is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Tzagournis located?
- Mark Tzagournis's practice location on file with NPPES is 441 N Lakeview Ave, Anaheim, CA 92807-3028.
- What is Mark Tzagournis's phone number?
- The practice phone number listed in the NPPES registry for Mark Tzagournis is (888) 988-2800.
- Does Mark Tzagournis accept Medicare?
- Mark Tzagournis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Tzagournis's NPI active?
- Yes — Mark Tzagournis's NPI (1689745580) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.