Ronald G. Jan, M.D. Inc
NPI 1982129961 · Surgical Oncology Physician · Sacramento, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald G. Jan, M.D. Inc is a Surgical Oncology Physician organization in Sacramento, CA (NPI 1982129961).
Provider details
- NPI number
- 1982129961
- Entity type
- Organization
- Primary specialty
- Surgical Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ronald Jan, President(916) 288-0055
- License
- G22975 (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
8 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
- 2017-08-10
- Last updated
- 2017-08-10
Frequently asked questions
- What is Ronald G. Jan, M.D. Inc's NPI number?
- Ronald G. Jan, M.D. Inc's National Provider Identifier (NPI) is 1982129961, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ronald G. Jan, M.D. Inc?
- Ronald G. Jan, M.D. Inc is classified in the NPPES registry as Surgical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald G. Jan, M.D. Inc located?
- Ronald G. Jan, M.D. Inc's practice location on file with NPPES is 5025 J St, Sacramento, CA 95819.
- What is Ronald G. Jan, M.D. Inc's phone number?
- The practice phone number listed in the NPPES registry for Ronald G. Jan, M.D. Inc is (916) 288-0055.
- Does Ronald G. Jan, M.D. Inc accept Medicare?
- Ronald G. Jan, 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 Ronald G. Jan, M.D. Inc?
- The authorized official listed on Ronald G. Jan, M.D. Inc's NPPES record is Ronald Jan, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ronald G. Jan, M.D. Inc's NPI active?
- Yes — Ronald G. Jan, M.D. Inc's NPI (1982129961) is active in the NPPES registry as of the last update on 2017-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.