Masaru Furukawa, MD
Family Medicine Physician · Spring Green, WI
Masaru Furukawa, MD is a family medicine physician with a practice address in Spring Green, Wisconsin, and NPI 1447484258, issued on May 7, 2009. Check the license (Wisconsin 54822, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Masaru Furukawa
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 54822 WI
54822-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 436 Sunrise Dr, Spring Green, WI 53588
- Phone
- (608) 588-2502
- Enumerated
- May 7, 2009
- Record last updated
- Mar 24, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (608) 588-7724
- Medicare enrollment
- Enrolled (PECOS I20131004000185); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 436 Sunrise Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Denu, PAPhysician Assistant1659346559
- Luke Fortney, MDFamily Medicine Physician1720057698
- Eric Jones, DOFamily Medicine Physician1053979492
- Ellen Olson, MDFamily Medicine Physician1306812045
- Lindsay Rothering, PTPhysical Therapist1225189566
- Mark Timmerman, MDSports Medicine (Family Medicine) Physician1881649333
Verify Masaru Furukawa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 54822Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average family medicine physician in 2024
1,831 Medicare Part D claims for 125 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Atorvastatin Calcium125 claims
- Amlodipine Besylate113 claims
- Omeprazole74 claims
- Lisinopril63 claims
- Rosuvastatin Calcium59 claims
- Levothyroxine Sodium58 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
- Sauk Prairie Healthcare IncPrairie Du Sac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Masaru Furukawa among 3,765 family medicine physician records in Wisconsin
Masaru Furukawa, 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 2009, is newer than 63% of them.
- NPI issued2009 · 63% of these records are older, 35% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2009 · 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).
7 family medicine physician records list a practice address in Spring Green
They are 7 of the 52 NPPES records with a practice address in Spring Green, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Spring Green → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kay Balink, MDSpring Green, WI 535881871594598
- Cristine Cornelius, MDSpring Green, WI 535881710988464
- Luke Fortney, MDSpring Green, WI 535881720057698
- Eric Jones, DOSpring Green, WI 535881053979492
- Kennith Miller, D.O.Spring Green, WI 535881992778484
- Ellen Olson, MDSpring Green, WI 535881306812045
- Richard Hill, MDStoughton, WI 535891750335501
- Dean Kresge, MDStoughton, WI 535891255383394
Common questions
What is Masaru Furukawa, MD's NPI number?
Masaru Furukawa, MD's National Provider Identifier (NPI) is 1447484258, issued on May 7, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Masaru Furukawa, MD located?
The NPPES record lists a practice address at 436 Sunrise Dr, Spring Green, WI, 53588. Phone: (608) 588-2502. Providers update this record themselves, so call before visiting.
How can I verify Masaru Furukawa, MD's license?
NPPES lists Wisconsin license number 54822, 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 Masaru Furukawa, MD prescribe under Medicare Part D?
In 2024, Masaru Furukawa, MD had 1,831 Medicare Part D claims for 125 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.