Marathon Medical Group Inc
NPI 1366455875 · Internal Medicine Physician · Anaheim Hills, CA
Marathon Medical Group Inc is a Internal Medicine Physician organization in Anaheim Hills, CA (NPI 1366455875).
Provider details
- NPI number
- 1366455875
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Donna Frisch, President(714) 282-6934
- License
- G76025 (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
- 2006-08-14
- Last updated
- 2012-11-20
Frequently asked questions
- What is Marathon Medical Group Inc's NPI number?
- Marathon Medical Group Inc's National Provider Identifier (NPI) is 1366455875, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Marathon Medical Group Inc?
- Marathon Medical Group Inc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marathon Medical Group Inc located?
- Marathon Medical Group Inc's practice location on file with NPPES is 500 S Anaheim Hills Rd, Anaheim Hills, CA 92807.
- What is Marathon Medical Group Inc's phone number?
- The practice phone number listed in the NPPES registry for Marathon Medical Group Inc is (714) 282-6934.
- Who is the authorized official for Marathon Medical Group Inc?
- The authorized official listed on Marathon Medical Group Inc's NPPES record is Donna Frisch, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Marathon Medical Group Inc's NPI active?
- Yes — Marathon Medical Group Inc's NPI (1366455875) is active in the NPPES registry as of the last update on 2012-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.