Clifford Robert Poplar, M.D.
Internal Medicine Physician · Delavan, WI
Clifford Robert Poplar, M.D. is an internal medicine physician with a practice address in Delavan, Wisconsin, and NPI 1942396718, issued on Oct 5, 2006. Check the license (Wisconsin 28415, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Clifford Robert Poplar
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 28415 WI
Self-reported in NPPES; status is on the state search - Practice location
- 915 Geneva Street, Delavan, WI 53115
- Phone
- (262) 728-2651
- Enumerated
- Oct 5, 2006
- Record last updated
- Nov 10, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (262) 728-2728
- Medicaid ID
- 30856400 WI
- Medicare enrollment
- Enrolled (PECOS I20080829000234); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Verify Clifford Robert Poplar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 28415Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average internal medicine physician in 2024
16,223 Medicare Part D claims for 668 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 411 claims were for opioids.
Most prescribed
- Atorvastatin Calcium842 claims
- Levothyroxine Sodium630 claims
- Amlodipine Besylate498 claims
- Losartan Potassium498 claims
- Furosemide434 claims
- Metoprolol Succinate392 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.
Industry payments in 2024: $30.02
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Clifford Robert Poplar among 2,078 internal medicine physician records in Wisconsin
Clifford Robert Poplar, M.D. is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1984 · median 2002 among the 1,098 with a school on file
- Record last updated2009 · 55% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Wisconsin
There are 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Delavan → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Susan Felsenthal, MDCudahy, WI 531101437264512
- Michael Nunag, D.O.Cudahy, WI 531101588827729
- Armando Nunag, MDCudahy, WI 531101649385139
- Meenaxi Shah, MDCudahy, WI 531101932217155
- Javed SheikhCudahy, WI 531101790888931
- Jack Tertadian, M.D.Cudahy, WI 531101689780462
- Rossana Madamba, MDElkhorn, WI 531211427165984
- Brooke Crotty, M.D.Elm Grove, WI 531221144487521
Common questions
What is Clifford Robert Poplar, M.D.'s NPI number?
Clifford Robert Poplar, M.D.'s National Provider Identifier (NPI) is 1942396718, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Clifford Robert Poplar, M.D. located?
The NPPES record lists a practice address at 915 Geneva Street, Delavan, WI, 53115. Phone: (262) 728-2651. Providers update this record themselves, so call before visiting.
How can I verify Clifford Robert Poplar, M.D.'s license?
NPPES lists Wisconsin license number 28415, 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 Clifford Robert Poplar, M.D. prescribe under Medicare Part D?
In 2024, Clifford Robert Poplar, M.D. had 16,223 Medicare Part D claims for 668 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.