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William Rassman, M.D.
NPI 1598931313 · Surgery Physician · Los Angeles, CA
William Rassman, M.D. is a Surgery Physician provider in Los Angeles, CA (NPI 1598931313).
Provider details
- NPI number
- 1598931313
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G57255 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
5757 Wilshire Blvd
Promenade 2
Los Angeles, CA 90036-5810
Phone: (310) 553-9113
Fax: (323) 904-4048
Street-level locationGet directions
Mailing address
5757 Wilshire Blvd
Los Angeles, CA 90036-5810
Registry dates
- Enumerated
- 2008-05-01
- Last updated
- 2012-11-28
Frequently asked questions
- What is William Rassman's NPI number?
- William Rassman's National Provider Identifier (NPI) is 1598931313, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Rassman's specialty?
- William Rassman is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Rassman located?
- William Rassman's practice location on file with NPPES is 5757 Wilshire Blvd, Los Angeles, CA 90036-5810.
- What is William Rassman's phone number?
- The practice phone number listed in the NPPES registry for William Rassman is (310) 553-9113.
- Is William Rassman's NPI active?
- Yes — William Rassman's NPI (1598931313) is active in the NPPES registry as of the last update on 2012-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.