Mark D Allison MD a Professional Corp
NPI 1962524538 · Internal Medicine Physician · Riverside, CA
Mark D Allison MD a Professional Corp is a Internal Medicine Physician organization in Riverside, CA (NPI 1962524538).
Provider details
- NPI number
- 1962524538
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Allison, President(951) 788-8332
- License
- C50568 (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
- 2007-04-04
- Last updated
- 2012-06-18
Frequently asked questions
- What is Mark D Allison MD a Professional Corp's NPI number?
- Mark D Allison MD a Professional Corp's National Provider Identifier (NPI) is 1962524538, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark D Allison MD a Professional Corp?
- Mark D Allison MD a Professional Corp is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark D Allison MD a Professional Corp located?
- Mark D Allison MD a Professional Corp's practice location on file with NPPES is 4100 Central Ave, Riverside, CA 92506-2933.
- What is Mark D Allison MD a Professional Corp's phone number?
- The practice phone number listed in the NPPES registry for Mark D Allison MD a Professional Corp is (951) 788-8332.
- Who is the authorized official for Mark D Allison MD a Professional Corp?
- The authorized official listed on Mark D Allison MD a Professional Corp's NPPES record is Mark Allison, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark D Allison MD a Professional Corp's NPI active?
- Yes — Mark D Allison MD a Professional Corp's NPI (1962524538) is active in the NPPES registry as of the last update on 2012-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.