OrganizationActive
Dennis R. Long, M.D. Inc.
NPI 1407954852 · Legal Medicine · Orange, CA
Dennis R. Long, M.D. Inc. is a Legal Medicine organization in Orange, CA (NPI 1407954852).
Provider details
- NPI number
- 1407954852
- Entity type
- Organization
- Primary specialty
- Legal MedicineOther Service Providers
- Organization subpart
- No
- Authorized official
- Sandi Williamson, Office Manager(951) 532-5005
- License
- 00G472430 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(91/100 index)
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
2601 E Chapman Ave
Orange, CA 92869-3206
Phone: (951) 532-5005
Street-level locationGet directions
Mailing address
Po Box 68
Norco, CA 92860-0068
Registry dates
- Enumerated
- 2006-09-20
- Last updated
- 2009-04-16
Frequently asked questions
- What is Dennis R. Long, M.D. Inc.'s NPI number?
- Dennis R. Long, M.D. Inc.'s National Provider Identifier (NPI) is 1407954852, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dennis R. Long, M.D. Inc.?
- Dennis R. Long, M.D. Inc. is classified in the NPPES registry as Legal Medicine (Other Service Providers).
- Where is Dennis R. Long, M.D. Inc. located?
- Dennis R. Long, M.D. Inc.'s practice location on file with NPPES is 2601 E Chapman Ave, Orange, CA 92869-3206.
- What is Dennis R. Long, M.D. Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Dennis R. Long, M.D. Inc. is (951) 532-5005.
- Who is the authorized official for Dennis R. Long, M.D. Inc.?
- The authorized official listed on Dennis R. Long, M.D. Inc.'s NPPES record is Sandi Williamson, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dennis R. Long, M.D. Inc.'s NPI active?
- Yes — Dennis R. Long, M.D. Inc.'s NPI (1407954852) is active in the NPPES registry as of the last update on 2009-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.