Mark Nathan, MD
NPI 1013947670 · Interventional Cardiology Physician · Walnut Creek, CA
Mark Nathan, MD is a Interventional Cardiology Physician provider in Walnut Creek, CA (NPI 1013947670).
Provider details
- NPI number
- 1013947670
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G35395 (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
- 2006-07-03
- Last updated
- 2010-06-25
Frequently asked questions
- What is Mark Nathan's NPI number?
- Mark Nathan's National Provider Identifier (NPI) is 1013947670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Nathan's specialty?
- Mark Nathan is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Nathan located?
- Mark Nathan's practice location on file with NPPES is 106 La Casa Via, Walnut Creek, CA 94598-3086.
- What is Mark Nathan's phone number?
- The practice phone number listed in the NPPES registry for Mark Nathan is (925) 274-2860.
- Is Mark Nathan's NPI active?
- Yes — Mark Nathan's NPI (1013947670) is active in the NPPES registry as of the last update on 2010-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.