NPPES file of Aug 9, 2026

Katie Oleyer

Family Medicine Physician · Hartford, CT

Katie Oleyer is a family medicine physician with a practice address in Hartford, Connecticut, and NPI 1386109890, issued on Feb 8, 2019. Check the license (Connecticut 12.008085, 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
1386109890
Name
Katie Oleyer
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
12.008085 CT
Self-reported in NPPES; status is on the state search
Practice location
21 Grand St, Hartford, CT 06106
Phone
(860) 550-7500
Enumerated
Feb 8, 2019
Record last updated
Feb 8, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190327002510); 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 21 Grand St

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

  1. Christine Aigbogun, PAPhysician Assistant1851058291
  2. Agnes Arhin, APRNPsychiatric/Mental Health Nurse Practitioner1780371971
  3. Diamond Bates, LPCAProfessional Counselor1699548248
  4. Laurie Bayer, M.D.Pediatrics Physician1356589519
  5. Deborah Blinkhorn, APRNPrimary Care Nurse Practitioner1922468974
  6. Kareem BollingSocial Worker1922929496

Verify Katie Oleyer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 12.008085
    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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15% fewer Medicare Part D claims than the average family medicine physician in 2024

3,010 Medicare Part D claims for 165 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 18 claims were for opioids.

  1. Katie Oleyer3,010
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium276 claims
  2. Amlodipine Besylate188 claims
  3. Metformin Hcl175 claims
  4. Pantoprazole Sodium141 claims
  5. Lisinopril122 claims
  6. Albuterol Sulfate Hfa101 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: $15.82

1 payment: food and beverage; the largest payer was Gilead Sciences, 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.

  1. Katie Oleyer$15.82
  2. Specialty average$902.55

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

Bills Medicare through one group practice

  1. Charter Oak Health Center, IncHartford, CT

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

Katie Oleyer among 958 family medicine physician records in Connecticut

Katie Oleyer is one of 958 family medicine physician records with a practice address in Connecticut. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 81% of them.

  • NPI issued2019 · 81% of these records are older, 14% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2018 · median 2009 among the 611 with a school on file
  • Record last updated2019 · 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Family Medicine Physician providers in Connecticut

There are 958 family medicine physician records in Connecticut.

The 8 family medicine physician records with the nearest ZIP codes

  1. Mouhanad Ayach, M.D.Hartford, CT 061061952563736
  2. Patrick Carroll, MDHartford, CT 061061295773299
  3. Antoinette Chaves, N.D.Hartford, CT 061061154645091
  4. Nieves Hornbeck, M.D.Hartford, CT 061061780635771
  5. Rose Knittel, M.D.Hartford, CT 061061942657671
  6. Heather Lucas Ross, MDHartford, CT 061061477647931
  7. Emilia Sangiovanni, D.O.Hartford, CT 061061073930186
  8. Stephenie Thurber, D. O.Hartford, CT 061061144209560

Common questions

What is Katie Oleyer's NPI number?

Katie Oleyer's National Provider Identifier (NPI) is 1386109890, issued on Feb 8, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Katie Oleyer located?

The NPPES record lists a practice address at 21 Grand St, Hartford, CT, 06106. Phone: (860) 550-7500. Providers update this record themselves, so call before visiting.

How can I verify Katie Oleyer's license?

NPPES lists Connecticut license number 12.008085, 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 Katie Oleyer prescribe under Medicare Part D?

In 2024, Katie Oleyer had 3,010 Medicare Part D claims for 165 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.