William H. Isacoff, M.D. Inc.
NPI 1538235189 · Hematology & Oncology Physician · Santa Monica, CA
William H. Isacoff, M.D. Inc. is a Hematology & Oncology Physician organization in Santa Monica, CA (NPI 1538235189).
Provider details
- NPI number
- 1538235189
- Entity type
- Organization
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- William Isacoff, Owner(310) 824-4133
- License
- G24596 (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
19 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
- 2006-11-27
- Last updated
- 2021-05-03
- Certified
- 2021-05-03
Frequently asked questions
- What is William H. Isacoff, M.D. Inc.'s NPI number?
- William H. Isacoff, M.D. Inc.'s National Provider Identifier (NPI) is 1538235189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William H. Isacoff, M.D. Inc.?
- William H. Isacoff, M.D. Inc. is classified in the NPPES registry as Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is William H. Isacoff, M.D. Inc. located?
- William H. Isacoff, M.D. Inc.'s practice location on file with NPPES is 2811 Wilshire Blvd Ste 414, Santa Monica, CA 90403-4804.
- What is William H. Isacoff, M.D. Inc.'s phone number?
- The practice phone number listed in the NPPES registry for William H. Isacoff, M.D. Inc. is (310) 824-4133.
- Who is the authorized official for William H. Isacoff, M.D. Inc.?
- The authorized official listed on William H. Isacoff, M.D. Inc.'s NPPES record is William Isacoff, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William H. Isacoff, M.D. Inc.'s NPI active?
- Yes — William H. Isacoff, M.D. Inc.'s NPI (1538235189) is active in the NPPES registry as of the last update on 2021-05-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.