John None Lin, DO
Sleep Medicine (Internal Medicine) Physician · Concord, CA
John None Lin, DO is a sleep medicine (internal medicine) physician with a practice address in Concord, California, and NPI 1780328203, issued on Apr 21, 2022. Check the license (California 20A25418, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John None Lin
- Credential
- DO
- Primary taxonomy
- Sleep Medicine (Internal Medicine) Physician 207RS0012X
- License number
- 20A25418 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2182 East St, Concord, CA 94520
- Phone
- (925) 310-8978
- Enumerated
- Apr 21, 2022
- Record last updated
- Jul 22, 2026
- Fax
- (925) 310-8978
- Entity
- Type 1 · individual
8 nearest sleep medicine (internal medicine) physician records → All 129 in California → Look up another NPI →
Also registered at 2182 East St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kristi Elliott, FNP-C, RNFamily Nurse Practitioner1972981835
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Verify John None Lin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A25418Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average sleep medicine (internal medicine) physician in 2024
99 Medicare Part D claims for 43 beneficiaries, against an average of 585 among the 852 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Pantoprazole Sodium11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John None Lin among 129 sleep medicine (internal medicine) physician records in California
John None Lin, DO is one of 129 sleep medicine (internal medicine) physician records with a practice address in California. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileNo · 82% of these records are
- Record last updated2026 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RS0012X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Internal Medicine) Physician providers in California
There are 129 sleep medicine (internal medicine) physician records in California.
All 129 in California → Every provider in Concord → Sleep Medicine (Internal Medicine) Physician nationwide →
The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes
- Parham Gharagozlou, M.D.Concord, CA 945191225059306
- Puja Thakkar, D.O.Danville, CA 945261558665562
- Yema JalalFremont, CA 945381255919775
- Steven RussoMartinez, CA 945531932659059
- Aditya Bhargava, M.D.Dublin, CA 945681114938032
- Navjot GrewalSan Ramon, CA 945831245646231
- Jatinder Marwaha, M.D.San Ramon, CA 945831417910407
- Connie Singh, MDPleasanton, CA 945881427212653
Common questions
What is John None Lin, DO's NPI number?
John None Lin, DO's National Provider Identifier (NPI) is 1780328203, issued on Apr 21, 2022. An NPI identifies a provider in billing; it is not a license.
Where is John None Lin, DO located?
The NPPES record lists a practice address at 2182 East St, Concord, CA, 94520. Phone: (925) 310-8978. Providers update this record themselves, so call before visiting.
How can I verify John None Lin, DO's license?
NPPES lists California license number 20A25418, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John None Lin, DO prescribe under Medicare Part D?
In 2024, John None Lin, DO had 99 Medicare Part D claims for 43 beneficiaries; the average among sleep medicine (internal medicine) physician prescribers was 585. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.