DR. JOHN NONE LIN DO
NPI 1780328203
Internal Medicine - Sleep Medicine in Concord, CA
About Dr. John None Lin Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN NONE LIN DO (NPI 1780328203) is an individual sleep medicine provider in Concord, California, licensed in California (20A25418) and active in the NPI registry since April 2022. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John None Lin Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Lin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Concord, CA 94519
- Reassigned Medicare billing, California enrollment
- 66 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94520 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CONCORD, CA 94520
CONCORD, CA 94520
CONCORD, CA 94520
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Lin's NPI number?
The NPI number for John Lin is 1780328203. It was assigned to this individual provider in the NPPES registry on April 21, 2022.
Where is John Lin located?
John Lin practices at 2182 East St, Concord, CA 94520. The listed phone number is (925) 310-8978.
What is John Lin's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.
Is John Lin enrolled in Medicare?
Yes. John Lin is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Lin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Lin reassigns Medicare benefits to Jiva Health, Inc (Concord, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Lin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Lin was last updated on July 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John None Lin, DO · NPI 1780328203
Sleep Medicine physician in Concord, California. Individual provider, active in the CMS NPPES registry since April 21, 2022.
## Identity
- **NPI:** 1780328203 (Entity type: Individual)
- **Enumerated:** April 21, 2022
- **Primary specialty:** Internal Medicine - Sleep Medicine · taxonomy 207RS0012X
- **State license:** 20A25418 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2182 EAST ST, Concord, CA 94520-2012
- **Phone:** (925) 310-8978 · **Fax:** (925) 310-8978
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Jiva Health, Inc (NPI 1285223552, Concord, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1780328203) · Data from the CMS NPPES public registry.