NPPES file of Aug 9, 2026

Jack Y S Luo, MD

Nephrology Physician · Fairfield, CA

Jack Y S Luo, MD is a nephrology physician with a practice address in Fairfield, California, and NPI 1851920854, issued on Apr 2, 2020. Check the license (California A182033, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851920854
Name
Jack Y S Luo
Credential
MD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
A182033 CA
Self-reported in NPPES; status is on the state search
Practice location
1411 Oliver RD Ste 250, Fairfield, CA 94534
Phone
(707) 426-5407
Enumerated
Apr 2, 2020
Record last updated
Jul 17, 2026
Fax
(707) 426-6376
Medicare enrollment
Enrolled (PECOS I20250710002470); accepts Medicare assignment
Medical or professional school
F H Netter, M.D. School Of Med At Quinnipiac Univ, 2020
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1411 Oliver RD Ste 250

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Steven Ong, MDNephrology Physician1225006349
  2. Oleg Rubin, MDNephrology Physician1790762763

Verify Jack Y S Luo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A182033
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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93% fewer Medicare Part D claims than the average nephrology physician in 2024

109 Medicare Part D claims for 23 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.

  1. Jack Luo109
  2. Specialty average1,465

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.

Industry payments in 2024: $363.04

3 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jack Luo$363.04
  2. Specialty average$3,091.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Ong Rubin Shahmir A Medical CorporationFairfield, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jack Y S Luo among 1,468 nephrology physician records in California

Jack Y S Luo, MD is one of 1,468 nephrology physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 97% of them.

  • NPI issued2020 · 97% of these records are older, 1% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 77% of these records are
  • Graduated2020 · median 2001 among the 1,128 with a school on file
  • Record last updated2026 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in California

There are 1,468 nephrology physician records in California.

The 8 nephrology physician records with the nearest ZIP codes

  1. Steven Ong, MDFairfield, CA 945341225006349
  2. Oleg Rubin, MDFairfield, CA 945341790762763
  3. John Baron, D.O.Travis Afb, CA 945351861471591
  4. Todd Bruno, M.D.Travis Afb, CA 945351407059702
  5. Madison Calder, MDFairfield, CA 945351336773571
  6. Fedoua Er Rbii, MDTravis Afb, CA 945351871150680
  7. Huyen Nguyen, M.D.Travis Afb, CA 945351528502895
  8. Steven Tolkan, MDFairfield, CA 945331871554766

Common questions

What is Jack Y S Luo, MD's NPI number?

Jack Y S Luo, MD's National Provider Identifier (NPI) is 1851920854, issued on Apr 2, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Jack Y S Luo, MD located?

The NPPES record lists a practice address at 1411 Oliver RD Ste 250, Fairfield, CA, 94534. Phone: (707) 426-5407. Providers update this record themselves, so call before visiting.

How can I verify Jack Y S Luo, MD's license?

NPPES lists California license number A182033, 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 Jack Y S Luo, MD prescribe under Medicare Part D?

In 2024, Jack Y S Luo, MD had 109 Medicare Part D claims for 23 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.