Katherine Riddle
Obstetrics & Gynecology Physician · South Windsor, CT
Katherine Riddle is an obstetrics & gynecology physician with a practice address in South Windsor, Connecticut, and NPI 1669866588, issued on Mar 28, 2015. Check the license (Connecticut 63724, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Riddle
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 63724 CT
Self-reported in NPPES; status is on the state search - Practice location
- 2600 Tamarack Ave Ste 200, South Windsor, CT 06074
- Phone
- (860) 646-1157
- Enumerated
- Mar 28, 2015
- Record last updated
- Jan 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190905001744); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 707 in Connecticut → Look up another NPI →
Also registered at 2600 Tamarack Ave Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Bridge, MSN, CNM, WHNPAdvanced Practice Midwife1023572021
- Molly Brown, MSN, FNP-CFamily Nurse Practitioner1316656424
- Rachel Gima, CNMAdvanced Practice Midwife1538732300
- Sarah Graceffa, M.D.Obstetrics & Gynecology Physician1669653630
- Danielle Grieco, M.D.Obstetrics & Gynecology Physician1104888304
- Martin Hancock, M.D.Obstetrics & Gynecology Physician1538122049
Verify Katherine Riddle in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 63724Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
69 Medicare Part D claims for 36 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol14 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: $142.35
7 payments; by number, the most common kind was food and beverage; the largest payer was CooperSurgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Bills Medicare through one group practice
- Obgyn Group OF Eastern Connecticut PCSouth Windsor, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Riddle among 707 obstetrics & gynecology physician records in Connecticut
Katherine Riddle is one of 707 obstetrics & gynecology 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 2015, is newer than 77% of them.
- NPI issued2015 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2015 · median 2003 among the 488 with a school on file
- Record last updated2020 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 obstetrics & gynecology physician records list a practice address in South Windsor
They are 12 of the 436 NPPES records with a practice address in South Windsor, and 707 obstetrics & gynecology physician records in Connecticut.
All 707 in Connecticut → Every provider in South Windsor → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jacqueline Calvo, M.D.South Windsor, CT 060741770843914
- Sarah Graceffa, M.D.South Windsor, CT 060741669653630
- Danielle Grieco, M.D.South Windsor, CT 060741104888304
- Martin Hancock, M.D.South Windsor, CT 060741538122049
- Kara Keeton, M.D.South Windsor, CT 060741023050390
- Lydia Lormand, D.O.South Windsor, CT 060741093072886
- Katherine LynchSouth Windsor, CT 060741124769583
- Katerina Michaels-Bogdan, M.D.South Windsor, CT 060741164484762
Common questions
What is Katherine Riddle's NPI number?
Katherine Riddle's National Provider Identifier (NPI) is 1669866588, issued on Mar 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Riddle located?
The NPPES record lists a practice address at 2600 Tamarack Ave Ste 200, South Windsor, CT, 06074. Phone: (860) 646-1157. Providers update this record themselves, so call before visiting.
How can I verify Katherine Riddle's license?
NPPES lists Connecticut license number 63724, 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 Katherine Riddle prescribe under Medicare Part D?
In 2024, Katherine Riddle had 69 Medicare Part D claims for 36 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.