Morris M. Li, MD
Internal Medicine Physician · Vacaville, CA
Morris M. Li, MD is an internal medicine physician with a practice address in Vacaville, California, and NPI 1700964442, issued on Nov 1, 2006. Check the license (California A64210, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Morris M. Li
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A64210 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Quality Dr, Vacaville, CA 95688
- Phone
- (707) 624-4000
- Enumerated
- Nov 1, 2006
- Record last updated
- Aug 17, 2022
- Medicaid ID
- 00A642100 CA
- Medicare enrollment
- Enrolled (PECOS I20110510000787); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1 Quality Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Morris M. Li in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A64210Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
198 Medicare Part D claims for 137 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 46 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen38 claims
- Prednisone30 claims
- Nabumetone16 claims
- Amoxicillin-Clavulanate Potass13 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 IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Morris M. Li among 17,696 internal medicine physician records in California
Morris M. Li, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1996 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 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).
53 internal medicine physician records list a practice address in Vacaville
They are 53 of the 1,903 NPPES records with a practice address in Vacaville, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Vacaville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kyaw Aung, MDVacaville, CA 956881386722114
- Hon Chan, M.D.Vacaville, CA 956881265529549
- Anne Chen, M.D.Vacaville, CA 956881003852708
- Thomas Fashinell, MDVacaville, CA 956881609926419
- Andleeb Judge, M.D.Vacaville, CA 956881932141124
- Frank Karneges, DOVacaville, CA 956881336220581
- Richard Lasslo, MDVacaville, CA 956881467526780
- James Lee, MDVacaville, CA 956881134279847
Common questions
What is Morris M. Li, MD's NPI number?
Morris M. Li, MD's National Provider Identifier (NPI) is 1700964442, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Morris M. Li, MD located?
The NPPES record lists a practice address at 1 Quality Dr, Vacaville, CA, 95688. Phone: (707) 624-4000. Providers update this record themselves, so call before visiting.
How can I verify Morris M. Li, MD's license?
NPPES lists California license number A64210, 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 Morris M. Li, MD prescribe under Medicare Part D?
In 2024, Morris M. Li, MD had 198 Medicare Part D claims for 137 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.