Henry I. Saperstein, M.D.
Internal Medicine Physician · Sturgeon Bay, WI
Henry I. Saperstein, M.D. is an internal medicine physician with a practice address in Sturgeon Bay, Wisconsin, and NPI 1033129911, issued on Aug 9, 2006. Check the license (Wisconsin 18425, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Henry I. Saperstein
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 18425 WI
Self-reported in NPPES; status is on the state search - Practice location
- 323 S 18TH Ave, Sturgeon Bay, WI 54235
- Phone
- (920) 746-0510
- Enumerated
- Aug 9, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 30237500 WI
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 323 S 18TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adam Alexander, D.O.Emergency Medicine Physician1497250385
- Keith Anclam, D.O.Internal Medicine Physician1487662037
- Maria Chona Antonio, MDFamily Medicine Physician1740295237
- Rick Avery, MDFamily Medicine Physician1205490497
- Patti Balestrieri, PA-CPhysician Assistant1205841723
- Ellen Barton, DPMPodiatrist1699263996
Verify Henry I. Saperstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 18425Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
30 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Henry I. Saperstein among 2,078 internal medicine physician records in Wisconsin
Henry I. Saperstein, 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 fileNo · 53% of these records are
- Record last updated2007 · 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).
10 internal medicine physician records list a practice address in Sturgeon Bay
They are 10 of the 350 NPPES records with a practice address in Sturgeon Bay, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Sturgeon Bay → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kumar Akashdeep, M.D.Sturgeon Bay, WI 542351720210008
- Keith Anclam, D.O.Sturgeon Bay, WI 542351487662037
- Paul Board, M.D.Sturgeon Bay, WI 542351891725420
- David Conger, MDSturgeon Bay, WI 542351477562510
- James Heise, M.D.Sturgeon Bay, WI 542351316934060
- Richard Hogan, M.D.Sturgeon Bay, WI 542351710911144
- Christopher Mildenberg, MDSturgeon Bay, WI 542351154409175
- Kelton Reitz, D.O.Sturgeon Bay, WI 542351164432027
Common questions
What is Henry I. Saperstein, M.D.'s NPI number?
Henry I. Saperstein, M.D.'s National Provider Identifier (NPI) is 1033129911, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Henry I. Saperstein, M.D. located?
The NPPES record lists a practice address at 323 S 18TH Ave, Sturgeon Bay, WI, 54235. Phone: (920) 746-0510. Providers update this record themselves, so call before visiting.
How can I verify Henry I. Saperstein, M.D.'s license?
NPPES lists Wisconsin license number 18425, 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 Henry I. Saperstein, M.D. prescribe under Medicare Part D?
In 2024, Henry I. Saperstein, M.D. had 30 Medicare Part D claims; 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.