Theodore Mazer, M.D.
NPI 1598768327 · Otolaryngology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theodore Mazer, M.D. is a Otolaryngology Physician provider in San Diego, CA (NPI 1598768327).
Provider details
- NPI number
- 1598768327
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A43828 (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
21 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-24
- Last updated
- 2020-02-19
- Certified
- 2020-02-19
Frequently asked questions
- What is Theodore Mazer's NPI number?
- Theodore Mazer's National Provider Identifier (NPI) is 1598768327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodore Mazer's specialty?
- Theodore Mazer is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Theodore Mazer located?
- Theodore Mazer's practice location on file with NPPES is 6699 Alvarado Rd, San Diego, CA 92120-5240.
- What is Theodore Mazer's phone number?
- The practice phone number listed in the NPPES registry for Theodore Mazer is (619) 583-8990.
- Does Theodore Mazer accept Medicare?
- Theodore Mazer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theodore Mazer's NPI active?
- Yes — Theodore Mazer's NPI (1598768327) is active in the NPPES registry as of the last update on 2020-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.