Kyi Lay San, MD
Internal Medicine Physician · Manteca, CA
Kyi Lay San, MD is an internal medicine physician with a practice address in Manteca, California, and NPI 1851742118, issued on Jun 28, 2016. Check the license (California A159779, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kyi Lay San
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A159779 CA
Self-reported in NPPES; status is on the state search - Practice location
- 165 Saint Dominics Dr Ste 201, Manteca, CA 95337
- Phone
- (209) 823-2345
- Enumerated
- Jun 28, 2016
- Record last updated
- Dec 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (209) 239-1154
- Medicare enrollment
- Enrolled (PECOS I20190805002612); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 165 Saint Dominics Dr Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kyi Lay San in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A159779Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% more Medicare Part D claims than the average internal medicine physician in 2024
5,882 Medicare Part D claims for 677 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 262 claims were for opioids.
Most prescribed
- Atorvastatin Calcium463 claims
- Amlodipine Besylate223 claims
- Losartan Potassium221 claims
- Lisinopril218 claims
- Levothyroxine Sodium207 claims
- Albuterol Sulfate Hfa167 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
- Permanente Medical Group IncStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kyi Lay San among 17,696 internal medicine physician records in California
Kyi Lay San, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2003 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 internal medicine physician records list a practice address in Manteca
They are 21 of the 1,017 NPPES records with a practice address in Manteca, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Manteca → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Allen, MDManteca, CA 953371306924212
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- Pallavi Prakash ChaurasiaManteca, CA 953371750021788
- Samuel Galicia, M.D.Manteca, CA 953371104238104
- William King, MDManteca, CA 953371427136324
- Mitchell Maccready, MDManteca, CA 953371821593104
- Eh Mu, MDManteca, CA 953371134207038
- Michael Nguyen, MDManteca, CA 953371871671685
Common questions
What is Kyi Lay San, MD's NPI number?
Kyi Lay San, MD's National Provider Identifier (NPI) is 1851742118, issued on Jun 28, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Kyi Lay San, MD located?
The NPPES record lists a practice address at 165 Saint Dominics Dr Ste 201, Manteca, CA, 95337. Phone: (209) 823-2345. Providers update this record themselves, so call before visiting.
How can I verify Kyi Lay San, MD's license?
NPPES lists California license number A159779, 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 Kyi Lay San, MD prescribe under Medicare Part D?
In 2024, Kyi Lay San, MD had 5,882 Medicare Part D claims for 677 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.