William Laine Sinnett, M.D.
Internal Medicine Physician · Minneapolis, MN
William Laine Sinnett, M.D. is an internal medicine physician with a practice address in Minneapolis, Minnesota, and NPI 1912327719, issued on Apr 18, 2014. Check the license (Minnesota 61799, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- William Laine Sinnett
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 61799 MN
Self-reported in NPPES; status is on the state search - Practice location
- 701 Park Ave South, Minneapolis, MN 55415
- Phone
- (612) 873-6963
- Enumerated
- Apr 18, 2014
- Record last updated
- Aug 15, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (612) 904-4358
- Medicare enrollment
- Enrolled (PECOS I20170601001081); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 2014
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 701 Park Ave South
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Laine Sinnett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 61799Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,053 Medicare Part D claims for 142 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 55 claims were for opioids.
Most prescribed
- Atorvastatin Calcium203 claims
- Amlodipine Besylate122 claims
- Levothyroxine Sodium71 claims
- Losartan Potassium71 claims
- Gabapentin69 claims
- Hydrochlorothiazide64 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): 91.4 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
- Hennepin Healthcare System IncMinneapolis, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Laine Sinnett among 2,632 internal medicine physician records in Minnesota
William Laine Sinnett, M.D. is one of 2,632 internal medicine physician records with a practice address in Minnesota. 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 2014, is newer than 66% of them.
- NPI issued2014 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2014 · median 2008 among the 1,700 with a school on file
- Record last updated2017 · 57% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
653 internal medicine physician records list a practice address in Minneapolis
They are 653 of the 22,918 NPPES records with a practice address in Minneapolis, and 2,632 internal medicine physician records in Minnesota.
All 2,632 in Minnesota → Every provider in Minneapolis → Internal Medicine Physician nationwide →
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Common questions
What is William Laine Sinnett, M.D.'s NPI number?
William Laine Sinnett, M.D.'s National Provider Identifier (NPI) is 1912327719, issued on Apr 18, 2014. An NPI identifies a provider in billing; it is not a license.
Where is William Laine Sinnett, M.D. located?
The NPPES record lists a practice address at 701 Park Ave South, Minneapolis, MN, 55415. Phone: (612) 873-6963. Providers update this record themselves, so call before visiting.
How can I verify William Laine Sinnett, M.D.'s license?
NPPES lists Minnesota license number 61799, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Laine Sinnett, M.D. prescribe under Medicare Part D?
In 2024, William Laine Sinnett, M.D. had 2,053 Medicare Part D claims for 142 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is William Laine Sinnett, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.4 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.