Orange County Hematology-Oncology Medical Group PC
NPI 1730416298 · Hematology & Oncology Physician · Santa Ana, CA
Orange County Hematology-Oncology Medical Group PC is a Hematology & Oncology Physician organization in Santa Ana, CA (NPI 1730416298).
Provider details
- NPI number
- 1730416298
- Entity type
- Organization
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Herbert Duvivier, Owner(714) 953-6246
- License
- G67229 (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
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
- 2009-11-04
- Last updated
- 2010-11-23
Frequently asked questions
- What is Orange County Hematology-Oncology Medical Group PC's NPI number?
- Orange County Hematology-Oncology Medical Group PC's National Provider Identifier (NPI) is 1730416298, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Orange County Hematology-Oncology Medical Group PC?
- Orange County Hematology-Oncology Medical Group PC is classified in the NPPES registry as Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Orange County Hematology-Oncology Medical Group PC located?
- Orange County Hematology-Oncology Medical Group PC's practice location on file with NPPES is 1401 N Tustin Ave, Santa Ana, CA 92705-8644.
- What is Orange County Hematology-Oncology Medical Group PC's phone number?
- The practice phone number listed in the NPPES registry for Orange County Hematology-Oncology Medical Group PC is (714) 953-6246.
- Who is the authorized official for Orange County Hematology-Oncology Medical Group PC?
- The authorized official listed on Orange County Hematology-Oncology Medical Group PC's NPPES record is Herbert Duvivier, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Orange County Hematology-Oncology Medical Group PC's NPI active?
- Yes — Orange County Hematology-Oncology Medical Group PC's NPI (1730416298) is active in the NPPES registry as of the last update on 2010-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.