Luis Rey Gasca, MD
Sleep Medicine (Internal Medicine) Physician · Redwood City, CA
Luis Rey Gasca, MD is a sleep medicine (internal medicine) physician with a practice address in Redwood City, California, and NPI 1740920784, issued on Mar 29, 2022. Check the license (California A202105, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Luis Rey Gasca
- Credential
- MD
- Primary taxonomy
- Sleep Medicine (Internal Medicine) Physician 207RS0012X
- License numbers
- A202105 CA
32551 MN
74646 MN
Self-reported in NPPES; status is on the state search - Practice location
- 450 Broadway St FL 2, Redwood City, CA 94063
- Phone
- (650) 723-6601
- Enumerated
- Mar 29, 2022
- Record last updated
- Jul 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20230815002145); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2022
- Entity
- Type 1 · individual
8 nearest sleep medicine (internal medicine) physician records → All 129 in California → Look up another NPI →
Also registered at 450 Broadway St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christine Brennan, MDSleep Medicine (Internal Medicine) Physician1629657473
- Shantha Gowda, PSYDPsychologist1992367882
- Krystal Jin, MDStudent in an Organized Health Care Education/Training Program1821618018
- Andrea Nguyen, MDSleep Medicine (Internal Medicine) Physician1417698929
- Hope Wang, MDStudent in an Organized Health Care Education/Training Program1225615636
Verify Luis Rey Gasca in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A202105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average sleep medicine (internal medicine) physician in 2024
257 Medicare Part D claims for 45 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
- Atorvastatin Calcium25 claims
- Pantoprazole Sodium16 claims
- Mounjaro14 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.
Bills Medicare through one group practice
- Mayo ClinicRochester, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Luis Rey Gasca among 129 sleep medicine (internal medicine) physician records in California
Luis Rey Gasca, MD 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 fileYes · 82% of these records are
- Graduated2022 · median 2006 among the 106 with a school on file
- Record last updated2025 · 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 Redwood City → Sleep Medicine (Internal Medicine) Physician nationwide →
The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes
- Christine Brennan, MDRedwood City, CA 940631629657473
- Andrea Nguyen, MDRedwood City, CA 940631417698929
- Joshua Lo, DOSan Carlos, CA 940701295313880
- Mahesh Shetty, MDSunnyvale, CA 940851295954121
- Kin Yuen, MDMountain View, CA 940401881759660
- Robert Ang, MDSunnyvale, CA 940871225219025
- Vadim Kagramanov, MDSunnyvale, CA 940871396792552
- Fan Mo, DOSunnyvale, CA 940871083111405
Common questions
What is Luis Rey Gasca, MD's NPI number?
Luis Rey Gasca, MD's National Provider Identifier (NPI) is 1740920784, issued on Mar 29, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Luis Rey Gasca, MD located?
The NPPES record lists a practice address at 450 Broadway St FL 2, Redwood City, CA, 94063. Phone: (650) 723-6601. Providers update this record themselves, so call before visiting.
How can I verify Luis Rey Gasca, MD's license?
NPPES lists California license number A202105, 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 Luis Rey Gasca, MD prescribe under Medicare Part D?
In 2024, Luis Rey Gasca, MD had 257 Medicare Part D claims for 45 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.