Brett Lowenthal, M.D.
NPI 1740668003 · Anatomic Pathology & Clinical Pathology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brett Lowenthal, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in San Diego, CA (NPI 1740668003).
Provider details
- NPI number
- 1740668003
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A128364 (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
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
42 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 42 | $37 |
Typical Medicare-allowed amounts for these services range $37–$37 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-05-07
- Last updated
- 2021-11-30
- Certified
- 2020-06-24
Frequently asked questions
- What is Brett Lowenthal's NPI number?
- Brett Lowenthal's National Provider Identifier (NPI) is 1740668003, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brett Lowenthal's specialty?
- Brett Lowenthal is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Brett Lowenthal located?
- Brett Lowenthal's practice location on file with NPPES is 4647 Zion Ave, San Diego, CA 92120-2507.
- What is Brett Lowenthal's phone number?
- The practice phone number listed in the NPPES registry for Brett Lowenthal is (619) 528-5346.
- Does Brett Lowenthal accept Medicare?
- Brett Lowenthal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brett Lowenthal's NPI active?
- Yes — Brett Lowenthal's NPI (1740668003) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.