John Lloyd Loewen, M.D.
Family Medicine Physician · Niagara, WI
John Lloyd Loewen, M.D. is a family medicine physician with a practice address in Niagara, Wisconsin, and NPI 1376693770, issued on Jan 10, 2007. Check the license (Wisconsin 20876 020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Lloyd Loewen
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20876 020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 615 Washington Ave, Niagara, WI 54151
- Phone
- (715) 251-3104
- Enumerated
- Jan 10, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (715) 251-1693
- Medicaid IDs
- 4673320 MI
32240900 WI - Medicare enrollment
- Enrolled (PECOS I20100216000950); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Verify John Lloyd Loewen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 20876 020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% more Medicare Part D claims than the average family medicine physician in 2024
6,472 Medicare Part D claims for 286 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 148 claims were for opioids.
Most prescribed
- Pravastatin Sodium290 claims
- Metoprolol Succinate229 claims
- Levothyroxine Sodium216 claims
- Pantoprazole Sodium209 claims
- Prednisone178 claims
- Metformin Hcl177 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): 85.5 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).
Industry payments in 2024: $141.15
6 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 55,478 providers of this specialty with any payment received $902.55 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.
John Lloyd Loewen among 3,765 family medicine physician records in Wisconsin
John Lloyd Loewen, M.D. 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 2007, is newer than 54% of them.
- NPI issued2007 · 54% of these records are older, 41% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1975 · median 2007 among the 2,347 with a school on file
- Record last updated2007 · 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).
1 family medicine physician record lists a practice address in Niagara
They are 1 of the 21 NPPES records with a practice address in Niagara, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Niagara → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michael Brenner, M.D.Oconto, WI 541531659781441
- Douglas Gremban, MDMountain, WI 541491316940927
- Charles Heyka, MDOconto, WI 541531083721286
- John Honish, MDOconto, WI 541531255364543
- Thomas Knutson, MDOconto, WI 541531760462352
- Elizabeth Russell, M.D.Oconto, WI 541531851301253
- Matthew Andreoli, MDOconto Falls, WI 541541538621917
- Luz Balmadrid, M.D.Oconto Falls, WI 541541477532943
Common questions
What is John Lloyd Loewen, M.D.'s NPI number?
John Lloyd Loewen, M.D.'s National Provider Identifier (NPI) is 1376693770, issued on Jan 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Lloyd Loewen, M.D. located?
The NPPES record lists a practice address at 615 Washington Ave, Niagara, WI, 54151. Phone: (715) 251-3104. Providers update this record themselves, so call before visiting.
How can I verify John Lloyd Loewen, M.D.'s license?
NPPES lists Wisconsin license number 20876 020, 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 John Lloyd Loewen, M.D. prescribe under Medicare Part D?
In 2024, John Lloyd Loewen, M.D. had 6,472 Medicare Part D claims for 286 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is John Lloyd Loewen, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.5 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.