Lloyd Nagasawa, M.D.
NPI 1487647335 · Hematology & Oncology Physician · Mission Viejo, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lloyd Nagasawa, M.D. is a Hematology & Oncology Physician provider in Mission Viejo, CA (NPI 1487647335).
Provider details
- NPI number
- 1487647335
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G50164 (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
20 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
- 2005-08-25
- Last updated
- 2011-12-19
Frequently asked questions
- What is Lloyd Nagasawa's NPI number?
- Lloyd Nagasawa's National Provider Identifier (NPI) is 1487647335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lloyd Nagasawa's specialty?
- Lloyd Nagasawa is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Lloyd Nagasawa located?
- Lloyd Nagasawa's practice location on file with NPPES is 26691 Plaza, Mission Viejo, CA 92691-6329.
- What is Lloyd Nagasawa's phone number?
- The practice phone number listed in the NPPES registry for Lloyd Nagasawa is (949) 347-0600.
- Does Lloyd Nagasawa accept Medicare?
- Lloyd Nagasawa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lloyd Nagasawa's NPI active?
- Yes — Lloyd Nagasawa's NPI (1487647335) is active in the NPPES registry as of the last update on 2011-12-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.