Lloyd Charles Cassidy, MD
Family Medicine Physician · Green Bay, WI
Lloyd Charles Cassidy, MD is a family medicine physician with a practice address in Green Bay, Wisconsin, and NPI 1457795569, issued on Apr 18, 2013. Check the license (Wisconsin 70125, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Lloyd Charles Cassidy
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 70125 WI
036144493 IL
Q6620 TX
Self-reported in NPPES; status is on the state search - Practice location
- 124 Siegler St, Green Bay, WI 54303
- Phone
- (920) 605-3115
- Enumerated
- Apr 18, 2013
- Record last updated
- Jan 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (920) 486-6826
- Medicare enrollment
- Enrolled (PECOS I20190418001271); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 124 Siegler St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Jenson, M.D.Family Medicine Physician1598727000
- Matthew Jenson, MDFamily Medicine Physician1063917243
Verify Lloyd Charles Cassidy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 70125Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average family medicine physician in 2024
6,137 Medicare Part D claims for 613 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 124 claims were for opioids.
Most prescribed
- Atorvastatin Calcium437 claims
- Lisinopril273 claims
- Amlodipine Besylate224 claims
- Omeprazole209 claims
- Tamsulosin Hcl199 claims
- Metoprolol Succinate195 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 2 group practices
- Apogee Medical Group Wisconsin SCGreen Bay, WI
- St Gianna Molla Clinic, IncDe Pere, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lloyd Charles Cassidy among 3,765 family medicine physician records in Wisconsin
Lloyd Charles Cassidy, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · median 2007 among the 2,347 with a school on file
- Record last updated2021 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
94 family medicine physician records list a practice address in Green Bay
They are 94 of the 4,619 NPPES records with a practice address in Green Bay, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Green Bay → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Julie Bonnin, MDGreen Bay, WI 543031497770473
- Alejandro Cabello, DOGreen Bay, WI 543031700527843
- Megan Grimm, DNP FNP-BCGreen Bay, WI 543031073359709
- John Hale, MDGreen Bay, WI 543031518016880
- Mark Jenson, M.D.Green Bay, WI 543031598727000
- Matthew Jenson, MDGreen Bay, WI 543031063917243
- Julie Magnin, M.D.Green Bay, WI 543031093776023
- Jeremy Metzler, MDGreen Bay, WI 543031356388086
Common questions
What is Lloyd Charles Cassidy, MD's NPI number?
Lloyd Charles Cassidy, MD's National Provider Identifier (NPI) is 1457795569, issued on Apr 18, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Lloyd Charles Cassidy, MD located?
The NPPES record lists a practice address at 124 Siegler St, Green Bay, WI, 54303. Phone: (920) 605-3115. Providers update this record themselves, so call before visiting.
How can I verify Lloyd Charles Cassidy, MD's license?
NPPES lists Wisconsin license number 70125, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lloyd Charles Cassidy, MD prescribe under Medicare Part D?
In 2024, Lloyd Charles Cassidy, MD had 6,137 Medicare Part D claims for 613 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.