NPPES file of Aug 9, 2026

Jong Gil Oh, MD

Internal Medicine Physician · Farmington, CT

Jong Gil Oh, MD is an internal medicine physician with a practice address in Farmington, Connecticut, and NPI 1245296573, issued on Apr 25, 2006. Check the license (Connecticut 045845, as entered in NPPES) on the Connecticut Medical Examining Board; 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
1245296573
Name
Jong Gil Oh
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
045845 CT
Self-reported in NPPES; status is on the state search
Practice location
4 Farm Springs RD, Farmington, CT 06032
Phone
(860) 284-5200
Enumerated
Apr 25, 2006
Record last updated
Aug 19, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(860) 284-5333
Medicaid ID
1245296573 CT
Medicare enrollment
Enrolled (PECOS I20071031000382); 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.
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Also registered at 4 Farm Springs RD

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

  1. Susan Huntington, PAMedical Physician Assistant1457530743
  2. Kasia Koziol-Dube, MDPediatrics Physician1801024302
  3. Dennis Roman, PTPhysical Therapist1942391081

Verify Jong Gil Oh in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 045845
    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 Connecticut 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.

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10.0 times the Medicare Part D claims of the average internal medicine physician in 2024

31,755 Medicare Part D claims for 597 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 483 claims were for opioids.

  1. Jong Oh31,755
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium1,889 claims
  2. Trazodone Hcl1,622 claims
  3. Amlodipine Besylate992 claims
  4. Levothyroxine Sodium783 claims
  5. Furosemide769 claims
  6. Gabapentin758 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: $31.03

1 payment: food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jong Oh$31.03
  2. Specialty average$1,303.06

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

Bills Medicare through 2 group practices

  1. Hdc Care Solutions LLCMiddletown, CT
  2. Reliant Housecalls, PLLCVernon, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jong Gil Oh among 2,623 internal medicine physician records in Connecticut

Jong Gil Oh, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 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 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 52% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1999 · median 2004 among the 1,646 with a school on file
  • Record last updated2011 · 61% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

117 internal medicine physician records list a practice address in Farmington

They are 117 of the 2,993 NPPES records with a practice address in Farmington, and 2,623 internal medicine physician records in Connecticut.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Denes Balazs, MDFarmington, CT 060321982610192
  2. Joseph Brenes, M.D.Farmington, CT 060321467590703
  3. Laura Brenes, MDFarmington, CT 060321174795371
  4. Kyung Chung, MDFarmington, CT 060321477657088
  5. Edward Clerkin, M.D.Farmington, CT 060321518999622
  6. Karl Dauphinais, M.D.Farmington, CT 060321548467897
  7. Roger El-Hachem, M.D.Farmington, CT 060321700834959
  8. Paul Guardino, MDFarmington, CT 060321174531172

Common questions

What is Jong Gil Oh, MD's NPI number?

Jong Gil Oh, MD's National Provider Identifier (NPI) is 1245296573, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jong Gil Oh, MD located?

The NPPES record lists a practice address at 4 Farm Springs RD, Farmington, CT, 06032. Phone: (860) 284-5200. Providers update this record themselves, so call before visiting.

How can I verify Jong Gil Oh, MD's license?

NPPES lists Connecticut license number 045845, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jong Gil Oh, MD prescribe under Medicare Part D?

In 2024, Jong Gil Oh, MD had 31,755 Medicare Part D claims for 597 beneficiaries; 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.