Calvin C. Ly, DO
Emergency Medicine Physician · Hercules, CA
Calvin C. Ly, DO is an emergency medicine physician with a practice address in Hercules, California, and NPI 1376761767, issued on Apr 23, 2007. Check the license (California 20A 10209, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Calvin C. Ly
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 20A 10209 CA
58001776 OH
Self-reported in NPPES; status is on the state search - Practice location
- 600 Alfred Nobel Dr Ste A, Hercules, CA 94547
- Phone
- (510) 984-1103
- Enumerated
- Apr 23, 2007
- Record last updated
- Jun 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081021000376); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Med & Biosciences, College Of Osteo Med, 2005
- Entity
- Type 1 · individual
Also registered at 600 Alfred Nobel Dr Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Boris Brand, NPCritical Care Medicine (Internal Medicine) Physician1710282629
- Amy ChoyPhysician Assistant1063822187
- Leocarlo De CastroNurse Practitioner1396434874
- Ogochukwu Nwosu, DNP, FNP-BC,PMHNP-BCFamily Nurse Practitioner1265994818
- Daniel Tsegay, DNP, FNP-BCFamily Nurse Practitioner1306344825
Verify Calvin C. Ly in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A 10209Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60.7 times the Medicare Part D claims of the average emergency medicine physician in 2024
13,709 Medicare Part D claims for 298 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 111 claims were for opioids.
Most prescribed
- Atorvastatin Calcium628 claims
- Amlodipine Besylate490 claims
- Levothyroxine Sodium459 claims
- Eliquis402 claims
- Divalproex Sodium351 claims
- Gabapentin345 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 MIPS final score for 2023 (Medicare payment program): 10.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Snf Specialists Medical CorporationFairfield, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
Other emergency medicine physician records in California
- Cooper Aakhus, MDStanford, CA1194351007
- Pyra Aarden, MDMartinez, CA1417058199
- Neal Aaron, D.O.Encinitas, CA1114283520
- Eric AaserudeWalnut Creek, CA1811491194
- Nader Abas, MDBarstow, CA1346288305
- Michael Abbo, MDNovato, CA1205819042
- Daniel Abbott, MDFullerton, CA1518907864
- Paul-Andre Abboud, M.D.Oakland, CA1710065503
- Mostafa Abdel-Hamid, MDStanford, CA1457918740
- Ashraf Abdel-KerimChino, CA1396961538
Common questions
What is Calvin C. Ly, DO's NPI number?
Calvin C. Ly, DO's National Provider Identifier (NPI) is 1376761767, issued on Apr 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Calvin C. Ly, DO located?
The NPPES record lists a practice address at 600 Alfred Nobel Dr Ste A, Hercules, CA, 94547. Phone: (510) 984-1103. Providers update this record themselves, so call before visiting.
How can I verify Calvin C. Ly, DO's license?
NPPES lists California license number 20A 10209, 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 Calvin C. Ly, DO prescribe under Medicare Part D?
In 2024, Calvin C. Ly, DO had 13,709 Medicare Part D claims for 298 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Calvin C. Ly, DO's MIPS final score?
The 2023 MIPS final score is 10.9 of 100. 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.