NPPES file of Aug 9, 2026

Sang Young Chyung, M.D.

Allergy & Immunology Physician · Michigan City, IN

Sang Young Chyung, M.D. is an allergy & immunology physician with a practice address in Michigan City, Indiana, and NPI 1659341311, issued on Jan 25, 2006. Check the license (Indiana 01039108A, as entered in NPPES) on the Medical Licensing Board of Indiana; 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
1659341311
Name
Sang Young Chyung
Credential
M.D.
Primary taxonomy
Allergy & Immunology Physician 207K00000X
License number
01039108A IN
Self-reported in NPPES; status is on the state search
Practice location
1225 E Coolspring Ave, Michigan City, IN 46360
Phone
(219) 878-5038
Enumerated
Jan 25, 2006
Record last updated
May 4, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(219) 874-1451
Medicaid ID
100147970 IN
Medicare enrollment
Enrolled (PECOS I20040806001102); accepts Medicare assignment
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.
Download card Updates feed

Also registered at 1225 E Coolspring Ave

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

  1. Larisa Allakhverdova, MDEmergency Medicine Physician1144219023
  2. Margaret Bailey, DOFamily Medicine Physician1841283348
  3. Michael Bassett, O.D.Optometrist1093785768
  4. Jon Bausback, O.D.Optometrist1679543342
  5. Stephen Burns, M.D.Orthopaedic Surgery Physician1184694242
  6. James Callaghan, M.D.Family Medicine Physician1790755866

Verify Sang Young Chyung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Licensing Board of Indiana
    Search for license 01039108A
    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 Indiana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

52% fewer Medicare Part D claims than the average allergy & immunology physician in 2024

357 Medicare Part D claims for 56 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. Sang Chyung357
  2. Specialty average741

Most prescribed

  1. Montelukast Sodium86 claims
  2. Azithromycin32 claims
  3. Azelastine Hcl22 claims
  4. Prednisone21 claims
  5. Arnuity Ellipta20 claims
  6. Doxycycline Hyclate18 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.

Industry payments in 2024: $53.86

3 payments; by number, the most common kind was education; the largest payer was Pfizer Inc. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sang Chyung$53.86
  2. Specialty average$8,321.81

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Allergy & Immunology Physician providers in Indiana

There are 50 allergy & immunology physician records in Indiana.

Other allergy & immunology physician records in Indiana

  1. Muhammad Afzal, M.D.New Castle, IN1306883061
  2. Sohaib Aleem, MDSouth Bend, IN1588894026
  3. Dana Alhaffar, MDIndianapolis, IN1932788783
  4. Frank Amodio, MDEvansville, IN1538273271
  5. Christina Barnes, MDSouth Bend, IN1689790248
  6. Jillian Belmonte, MDIndianapolis, IN1942838768
  7. Vanessa Cavero Chavez, MDFort Wayne, IN1730496076
  8. Donald Clayton, MDLafayette, IN1932178746
  9. John Duplantier, M.D.Greenwood, IN1134121569
  10. Tolly Epstein, M.D.Indianapolis, IN1851438816

Common questions

What is Sang Young Chyung, M.D.'s NPI number?

Sang Young Chyung, M.D.'s National Provider Identifier (NPI) is 1659341311, issued on Jan 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sang Young Chyung, M.D. located?

The NPPES record lists a practice address at 1225 E Coolspring Ave, Michigan City, IN, 46360. Phone: (219) 878-5038. Providers update this record themselves, so call before visiting.

How can I verify Sang Young Chyung, M.D.'s license?

NPPES lists Indiana license number 01039108A, 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 Sang Young Chyung, M.D. prescribe under Medicare Part D?

In 2024, Sang Young Chyung, M.D. had 357 Medicare Part D claims for 56 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.