Thomas O'Connor, MD
Family Medicine Physician · Greenfield, IN
Thomas O'Connor, MD is a family medicine physician with a practice address in Greenfield, Indiana, and NPI 1043304306, issued on Oct 3, 2006. Check the license (Indiana 01031101, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Thomas O'Connor
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 01031101 IN
Self-reported in NPPES; status is on the state search - Practice location
- 300 E Boyd Ave, Greenfield, IN 46140
- Phone
- (317) 462-5252
- Enumerated
- Oct 3, 2006
- Record last updated
- Mar 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (317) 462-8010
- Medicaid ID
- 100348390 IN
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,506 in Indiana → Look up another NPI →
Also registered at 300 E Boyd Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas O'Connor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01031101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average family medicine physician in 2024
994 Medicare Part D claims for 175 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Atorvastatin Calcium62 claims
- Losartan Potassium57 claims
- Levothyroxine Sodium40 claims
- Prednisone39 claims
- Omeprazole38 claims
- Amlodipine Besylate33 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: $140.55
5 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Thomas O'Connor among 3,506 family medicine physician records in Indiana
Thomas O'Connor, MD 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 2006, is newer than 19% of them.
- NPI issued2006 · 19% of these records are older, 46% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2021 · 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).
31 family medicine physician records list a practice address in Greenfield
They are 31 of the 593 NPPES records with a practice address in Greenfield, and 3,506 family medicine physician records in Indiana.
All 3,506 in Indiana → Every provider in Greenfield → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ronald Andrews, MDGreenfield, IN 461401497701544
- Sandra Aspy, M.D.Greenfield, IN 461401831131218
- James Brinkruff, MDGreenfield, IN 461401578657813
- Scott Capen, MDGreenfield, IN 461401386646925
- Maria Cudiamat, MDGreenfield, IN 461401942283510
- Lori Deemer, M.D.Greenfield, IN 461401770585317
- Stephen Flink, M.D.Greenfield, IN 461401366444911
- Ray Haas, MDGreenfield, IN 461401053355974
Common questions
What is Thomas O'Connor, MD's NPI number?
Thomas O'Connor, MD's National Provider Identifier (NPI) is 1043304306, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas O'Connor, MD located?
The NPPES record lists a practice address at 300 E Boyd Ave, Greenfield, IN, 46140. Phone: (317) 462-5252. Providers update this record themselves, so call before visiting.
How can I verify Thomas O'Connor, MD's license?
NPPES lists Indiana license number 01031101, 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 Thomas O'Connor, MD prescribe under Medicare Part D?
In 2024, Thomas O'Connor, MD had 994 Medicare Part D claims for 175 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.