Sundar Natarajan, M.D.
NPI 1588794085 · Internal Medicine Physician · Stockton, CA
Sundar Natarajan, M.D. is a Internal Medicine Physician provider in Stockton, CA (NPI 1588794085).
Provider details
- NPI number
- 1588794085
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A84407 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$337 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-06
- Last updated
- 2009-06-17
Frequently asked questions
- What is Sundar Natarajan's NPI number?
- Sundar Natarajan's National Provider Identifier (NPI) is 1588794085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sundar Natarajan's specialty?
- Sundar Natarajan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sundar Natarajan located?
- Sundar Natarajan's practice location on file with NPPES is 1800 N California St, Stockton, CA 95204-6019.
- What is Sundar Natarajan's phone number?
- The practice phone number listed in the NPPES registry for Sundar Natarajan is (209) 534-4127.
- Is Sundar Natarajan's NPI active?
- Yes — Sundar Natarajan's NPI (1588794085) is active in the NPPES registry as of the last update on 2009-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.