Brian Greenberg, M.D.
NPI 1821023201 · Pediatric Allergy/Immunology Physician · Tarzana, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Greenberg, M.D. is a Pediatric Allergy/Immunology Physician provider in Tarzana, CA (NPI 1821023201).
Provider details
- NPI number
- 1821023201
- Entity type
- Individual
- Primary specialty
- Pediatric Allergy/Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G61421 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,531 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 29525 Canwood St Ste 250Agoura, CA 91301-4231Phone: (818) 735-5555
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2022-03-02
- Certified
- 2022-03-02
Frequently asked questions
- What is Brian Greenberg's NPI number?
- Brian Greenberg's National Provider Identifier (NPI) is 1821023201, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Greenberg's specialty?
- Brian Greenberg is listed in the NPPES registry with a primary specialty of Pediatric Allergy/Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Greenberg located?
- Brian Greenberg's practice location on file with NPPES is 18370 Burbank Blvd, Tarzana, CA 91356-2804.
- What is Brian Greenberg's phone number?
- The practice phone number listed in the NPPES registry for Brian Greenberg is (818) 996-6000.
- Does Brian Greenberg accept Medicare?
- Brian Greenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Greenberg's NPI active?
- Yes — Brian Greenberg's NPI (1821023201) is active in the NPPES registry as of the last update on 2022-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.