Natalie S. Opanasets, M.D.
Family Medicine Physician · Michigan City, IN
Natalie S. Opanasets, M.D. is a family medicine physician with a practice address in Michigan City, Indiana, and NPI 1366615833, issued on Apr 7, 2008. Check the license (Indiana 01069068A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Natalie S. Opanasets
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 01069068A IN
036123887 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4111 Franklin St, Michigan City, IN 46360
- Phone
- (219) 873-2919
- Enumerated
- Apr 7, 2008
- Record last updated
- Mar 14, 2025
- Fax
- (219) 873-2909
- Medicare enrollment
- Enrolled (PECOS I20110415000168); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,506 in Indiana → Look up another NPI →
Also registered at 4111 Franklin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Billie-Ann Black, DNPFamily Nurse Practitioner1508837782
- Jason Bruno, N.P.Family Nurse Practitioner1780145904
- Mayumi Cayde Leslie, M.D.Family Medicine Physician1457485013
- Anna Halberstadt, NPFamily Nurse Practitioner1821576059
- Cheryl Krueger, FNPFamily Medicine Physician1952396772
- Jaroslaw Kuna, M.D.Family Medicine Physician1285818591
Verify Natalie S. Opanasets in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01069068ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average family medicine physician in 2024
873 Medicare Part D claims for 462 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 41 claims were for opioids.
Most prescribed
- Prednisone191 claims
- Amoxicillin-Clavulanate Potass71 claims
- Cephalexin52 claims
- Doxycycline Monohydrate47 claims
- Azithromycin36 claims
- Albuterol Sulfate Hfa27 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 MIPS final score for 2023 (Medicare payment program): 88 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Franciscan Physician NetworkMichigan City, IN
- University OF ChicagoCrown Point, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Natalie S. Opanasets among 3,506 family medicine physician records in Indiana
Natalie S. Opanasets, M.D. is one of 3,506 family medicine physician records with a practice address in Indiana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 36% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1998 · median 2005 among the 2,196 with a school on file
- Record last updated2025 · 48% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 family medicine physician records list a practice address in Michigan City
They are 21 of the 596 NPPES records with a practice address in Michigan City, and 3,506 family medicine physician records in Indiana.
All 3,506 in Indiana → Every provider in Michigan City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Margaret Bailey, DOMichigan City, IN 463601841283348
- Michael Best, MDMichigan City, IN 463601083621510
- James Callaghan, M.D.Michigan City, IN 463601790755866
- Ralph Caruso, DOMichigan City, IN 463601154366680
- Sandra Deausy, MDMichigan City, IN 463601205843943
- Franklin Firestone, M.D.Michigan City, IN 463601164492245
- Carol Grobner, DOMichigan City, IN 463601790753218
- Cheryl Krueger, FNPMichigan City, IN 463601952396772
Common questions
What is Natalie S. Opanasets, M.D.'s NPI number?
Natalie S. Opanasets, M.D.'s National Provider Identifier (NPI) is 1366615833, issued on Apr 7, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Natalie S. Opanasets, M.D. located?
The NPPES record lists a practice address at 4111 Franklin St, Michigan City, IN, 46360. Phone: (219) 873-2919. Providers update this record themselves, so call before visiting.
How can I verify Natalie S. Opanasets, M.D.'s license?
NPPES lists Indiana license number 01069068A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Natalie S. Opanasets, M.D. prescribe under Medicare Part D?
In 2024, Natalie S. Opanasets, M.D. had 873 Medicare Part D claims for 462 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Natalie S. Opanasets, M.D.'s MIPS final score?
The 2023 MIPS final score is 88 of 100. 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.