Walter S. Siporin, M.D. Inc.
NPI 1255656450 · Allergy & Immunology Physician · Woodland Hills, CA
Walter S. Siporin, M.D. Inc. is a Allergy & Immunology Physician organization in Woodland Hills, CA (NPI 1255656450).
Provider details
- NPI number
- 1255656450
- Entity type
- Organization
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Walter Siporin, Owner(818) 884-8660
- License
- A29048 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
- 2010-03-30
- Last updated
- 2010-08-06
Frequently asked questions
- What is Walter S. Siporin, M.D. Inc.'s NPI number?
- Walter S. Siporin, M.D. Inc.'s National Provider Identifier (NPI) is 1255656450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Walter S. Siporin, M.D. Inc.?
- Walter S. Siporin, M.D. Inc. is classified in the NPPES registry as Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Walter S. Siporin, M.D. Inc. located?
- Walter S. Siporin, M.D. Inc.'s practice location on file with NPPES is 6325 Topanga Canyon Blvd., Woodland Hills, CA 91367-2010.
- What is Walter S. Siporin, M.D. Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Walter S. Siporin, M.D. Inc. is (818) 884-8660.
- Who is the authorized official for Walter S. Siporin, M.D. Inc.?
- The authorized official listed on Walter S. Siporin, M.D. Inc.'s NPPES record is Walter Siporin, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Walter S. Siporin, M.D. Inc.'s NPI active?
- Yes — Walter S. Siporin, M.D. Inc.'s NPI (1255656450) is active in the NPPES registry as of the last update on 2010-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.