Karl Sun, M.D. Inc.
NPI 1801258843 · Cardiovascular Disease Physician · San Diego, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Sun, M.D. Inc. is a Cardiovascular Disease Physician organization in San Diego, CA (NPI 1801258843).
Provider details
- NPI number
- 1801258843
- Entity type
- Organization
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Karl Sun, Physician/Owner(619) 287-7060
- License
- A68612 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2016-03-28
- Last updated
- 2016-03-28
Frequently asked questions
- What is Karl Sun, M.D. Inc.'s NPI number?
- Karl Sun, M.D. Inc.'s National Provider Identifier (NPI) is 1801258843, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Karl Sun, M.D. Inc.?
- Karl Sun, M.D. Inc. is classified in the NPPES registry as Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Sun, M.D. Inc. located?
- Karl Sun, M.D. Inc.'s practice location on file with NPPES is 5555 Reservoir Drive, San Diego, CA 92120.
- What is Karl Sun, M.D. Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Karl Sun, M.D. Inc. is (619) 287-7060.
- Does Karl Sun, M.D. Inc. accept Medicare?
- Karl Sun, M.D. Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Karl Sun, M.D. Inc.?
- The authorized official listed on Karl Sun, M.D. Inc.'s NPPES record is Karl Sun, Physician/Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Karl Sun, M.D. Inc.'s NPI active?
- Yes — Karl Sun, M.D. Inc.'s NPI (1801258843) is active in the NPPES registry as of the last update on 2016-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.