Maria Chona Segismundo Antonio, MD
Family Medicine Physician · Sturgeon Bay, WI
Maria Chona Segismundo Antonio, MD is a family medicine physician with a practice address in Sturgeon Bay, Wisconsin, and NPI 1740295237, issued on Jul 31, 2006. Check the license (Wisconsin 48475, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Maria Chona Segismundo Antonio
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 48475 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
- Jul 31, 2006
- Record last updated
- Mar 10, 2026
- Fax
- (920) 743-1585
- Medicaid ID
- 34688000 WI
- Medicare enrollment
- Enrolled (PECOS I20050829001038); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 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
- Rick Avery, MDFamily Medicine Physician1205490497
- Patti Balestrieri, PA-CPhysician Assistant1205841723
- Ellen Barton, DPMPodiatrist1699263996
- John Beck, MDFamily Medicine Physician1801803341
Verify Maria Chona Segismundo Antonio in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 48475Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,082 Medicare Part D claims for 603 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 77 claims were for opioids.
Most prescribed
- Levothyroxine Sodium675 claims
- Atorvastatin Calcium512 claims
- Lisinopril454 claims
- Hydrochlorothiazide356 claims
- Amlodipine Besylate345 claims
- Losartan Potassium280 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
- Door County Memorial HospitalSister Bay, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria Chona Segismundo Antonio among 3,765 family medicine physician records in Wisconsin
Maria Chona Segismundo Antonio, 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1988 · median 2007 among the 2,347 with a school on file
- Record last updated2026 · 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).
13 family medicine physician records list a practice address in Sturgeon Bay
They are 13 of the 350 NPPES records with a practice address in Sturgeon Bay, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Sturgeon Bay → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sara Aicher, DOSturgeon Bay, WI 542351598966947
- Michael Aleksandrowicz, MDSturgeon Bay, WI 542351235556127
- Scott Anderson, M.D.Sturgeon Bay, WI 542351124042429
- Rick Avery, MDSturgeon Bay, WI 542351205490497
- John Beck, MDSturgeon Bay, WI 542351801803341
- George Gorchynsky, M.D.Sturgeon Bay, WI 542351871523258
- Paul Greenlaw, M.D.Sturgeon Bay, WI 542351487769584
- Sandra Martens, M.D.Sturgeon Bay, WI 542351154330470
Common questions
What is Maria Chona Segismundo Antonio, MD's NPI number?
Maria Chona Segismundo Antonio, MD's National Provider Identifier (NPI) is 1740295237, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maria Chona Segismundo Antonio, MD 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 Maria Chona Segismundo Antonio, MD's license?
NPPES lists Wisconsin license number 48475, 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 Maria Chona Segismundo Antonio, MD prescribe under Medicare Part D?
In 2024, Maria Chona Segismundo Antonio, MD had 9,082 Medicare Part D claims for 603 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.