Constance Wenjui Lo, MD
Internal Medicine Physician · San Jose, CA
Constance Wenjui Lo, MD is an internal medicine physician with a practice address in San Jose, California, and NPI 1033175997, issued on Apr 20, 2006. Check the license (California A72854, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Constance Wenjui Lo
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A72854 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2400 Moorpark Ave, San Jose, CA 95128
- Phone
- (408) 885-5000
- Enumerated
- Apr 20, 2006
- Record last updated
- Apr 29, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 00A728540 CA
- Medicare enrollment
- Enrolled (PECOS I20090206000266); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2400 Moorpark Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Senait AbrahaCase Manager/Care Coordinator1609152156
- Lalitha AcharyaMental Health Counselor1891928149
- Jamal AdamCase Manager/Care Coordinator1285910836
- Y Klong Adrong, MHCMental Health Counselor1871633180
- Sheilah Altomare, M.S., R.D.Registered Dietitian1740512912
- Evanthia Antonakopoulou, RN, PHN, NPRegistered Nurse1073945903
Verify Constance Wenjui Lo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A72854Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% more Medicare Part D claims than the average internal medicine physician in 2024
6,269 Medicare Part D claims for 481 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 237 claims were for opioids.
Most prescribed
- Atorvastatin Calcium510 claims
- Amlodipine Besylate345 claims
- Levothyroxine Sodium222 claims
- Metformin Hcl220 claims
- Omeprazole183 claims
- Gabapentin150 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 80.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- County OF Santa ClaraSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Constance Wenjui Lo among 17,696 internal medicine physician records in California
Constance Wenjui Lo, 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
- Graduated1999 · median 2004 among the 11,065 with a school on file
- Record last updated2008 · 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).
428 internal medicine physician records list a practice address in San Jose
They are 428 of the 20,925 NPPES records with a practice address in San Jose, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Jose → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Alfonso Banuelos, MDSan Jose, CA 951281295720613
- Kimberly Bazar, MDSan Jose, CA 951281447225206
- Andrea Cervenka, MDSan Jose, CA 951281609841774
- Stephanie Chan, MDSan Jose, CA 951281639144538
- Alexander Chyorny, MDSan Jose, CA 951281750358016
- Sarah Cody, MDSan Jose, CA 951281568425437
- Vijaya Dudyala, M.DSan Jose, CA 951281477522589
- Eamonn Dunphy, MDSan Jose, CA 951281003878182
Common questions
What is Constance Wenjui Lo, MD's NPI number?
Constance Wenjui Lo, MD's National Provider Identifier (NPI) is 1033175997, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Constance Wenjui Lo, MD located?
The NPPES record lists a practice address at 2400 Moorpark Ave, San Jose, CA, 95128. Phone: (408) 885-5000. Providers update this record themselves, so call before visiting.
How can I verify Constance Wenjui Lo, MD's license?
NPPES lists California license number A72854, 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 Constance Wenjui Lo, MD prescribe under Medicare Part D?
In 2024, Constance Wenjui Lo, MD had 6,269 Medicare Part D claims for 481 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Constance Wenjui Lo, MD's MIPS final score?
The 2023 MIPS final score is 80.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.