NPPES file of Aug 9, 2026

Sarah K. Hambrook, M.D.

Internal Medicine Physician · St Francis, WI

Sarah K. Hambrook, M.D. is an internal medicine physician with a practice address in St Francis, Wisconsin, and NPI 1285842781, issued on May 18, 2007. Check the license (Wisconsin 53262-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1285842781
Name
Sarah K. Hambrook
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
53262-020 WI
Self-reported in NPPES; status is on the state search
Practice location
2000 E Layton Ave, St Francis, WI 53235
Phone
(414) 744-7880
Enumerated
May 18, 2007
Record last updated
Dec 26, 2024
Medicaid IDs
100006991 WI
1285842781 WI
Medicare enrollment
Enrolled (PECOS I20100212000026); accepts Medicare assignment
Medical or professional school
University Of Connecticut School Of Medicine, 2004
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2000 E Layton Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Arthur Agostini, LATAthletic Trainer1366001331
  2. Sarang Baman, MDFamily Medicine Physician1770661290
  3. Leigh Beyer, RPHPharmacist1871929273
  4. Paul Blaske, CADC IIICounselor1831108521
  5. Alison Damato, APNPNurse Practitioner1508421728
  6. Hayley Demario, NPNurse Practitioner1538834510

Verify Sarah K. Hambrook in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 53262-020    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

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92% fewer Medicare Part D claims than the average internal medicine physician in 2024

258 Medicare Part D claims for 176 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Sarah Hambrook258
  2. Specialty average3,176

Most prescribed

  1. Prednisone31 claims
  2. Cephalexin22 claims
  3. Fluticasone Propionate16 claims
  4. Amoxicillin-Clavulanate Potass12 claims
  5. Doxycycline Hyclate12 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 one group practice

  1. Lakeshore Medical Clinic LLCSaint Francis, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

2 internal medicine physician records list a practice address in St Francis

They are 2 of the 146 NPPES records with a practice address in St Francis, and 2,078 internal medicine physician records in Wisconsin.

All 2 in St Francis → All 2,078 in Wisconsin → Every provider in St Francis →

Other internal medicine physician records in Wisconsin

  1. Sheetal Aatrai, MDMarshfield, WI1417568965
  2. Khalid Abdelgadir, MDManitowoc, WI1407433295
  3. Mesfin Abdissa, MDMilwaukee, WI1376579417
  4. Anas Abed, MDMadison, WI1659002566
  5. Margaret Abel, MDRhinelander, WI1477590487
  6. Mesfin Abera, M.D.Beaver Dam, WI1972852390
  7. Vidthya Abraham, M.D.Madison, WI1861836058
  8. Ismael Abu Limon, MDGreenfield, WI1467945543
  9. Amjed Abu Muhanna, MDMarinette, WI1861514135
  10. Satish Achanti, MDAppleton, WI1982711198

Common questions

What is Sarah K. Hambrook, M.D.'s NPI number?

Sarah K. Hambrook, M.D.'s National Provider Identifier (NPI) is 1285842781, issued on May 18, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Sarah K. Hambrook, M.D. located?

The NPPES record lists a practice address at 2000 E Layton Ave, St Francis, WI, 53235. Phone: (414) 744-7880. Providers update this record themselves, so call before visiting.

How can I verify Sarah K. Hambrook, M.D.'s license?

NPPES lists Wisconsin license number 53262-020, 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 Sarah K. Hambrook, M.D. prescribe under Medicare Part D?

In 2024, Sarah K. Hambrook, M.D. had 258 Medicare Part D claims for 176 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.