Kaitlin Ann O'Connor, D.O.
Obstetrics & Gynecology Physician · Weymouth, MA
Kaitlin Ann O'Connor, D.O. is an obstetrics & gynecology physician with a practice address in Weymouth, Massachusetts, and NPI 1962841254, issued on Jun 19, 2013. Check the license (Massachusetts 280740, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Kaitlin Ann O'Connor
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 280740 MA
56357 CT
5101020663 MI
Self-reported in NPPES; status is on the state search - Practice location
- 90 Libbey Pkwy Ste 105, Weymouth, MA 02189
- Phone
- (339) 201-4120
- Enumerated
- Jun 19, 2013
- Record last updated
- Mar 4, 2022
- Fax
- (339) 201-4122
- Medicare enrollment
- Enrolled (PECOS I20191002001145); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Physicians And Surgeons, 2013
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,127 in Massachusetts → Look up another NPI →
Verify Kaitlin Ann O'Connor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 280740Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
100 Medicare Part D claims for 40 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Estradiol22 claims
- Venlafaxine Hcl Er14 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $23.40
1 payment: food and beverage; the largest payer was Cranial Technologies, 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
- South Shore Medical Center, Inc.Weymouth, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kaitlin Ann O'Connor among 1,127 obstetrics & gynecology physician records in Massachusetts
Kaitlin Ann O'Connor, D.O. is one of 1,127 obstetrics & gynecology physician records with a practice address in Massachusetts. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 75% of them.
- NPI issued2013 · 75% of these records are older, 24% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2013 · median 2004 among the 715 with a school on file
- Record last updated2022 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 obstetrics & gynecology physician records list a practice address in Weymouth
They are 14 of the 1,156 NPPES records with a practice address in Weymouth, and 1,127 obstetrics & gynecology physician records in Massachusetts.
All 1,127 in Massachusetts → Every provider in Weymouth → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Julianne Arena, M.D.S Weymouth, MA 021891679541064
- Hsi-Pin Chen, MDWeymouth, MA 021891871550228
- Kimberly Dever, M.D.S Weymouth, MA 021891265433973
- Shannon Fullerton, MDWeymouth, MA 021891821099110
- Lisa Gioni, M.D.Weymouth, MA 021891356562573
- Christine Hirsemann, M.D.S Weymouth, MA 021891053414136
- Darlyne Johnson, M.D.S Weymouth, MA 021891831158518
- Ingrid Kotch, MDWeymouth, MA 021891922089648
Common questions
What is Kaitlin Ann O'Connor, D.O.'s NPI number?
Kaitlin Ann O'Connor, D.O.'s National Provider Identifier (NPI) is 1962841254, issued on Jun 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Kaitlin Ann O'Connor, D.O. located?
The NPPES record lists a practice address at 90 Libbey Pkwy Ste 105, Weymouth, MA, 02189. Phone: (339) 201-4120. Providers update this record themselves, so call before visiting.
How can I verify Kaitlin Ann O'Connor, D.O.'s license?
NPPES lists Massachusetts license number 280740, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kaitlin Ann O'Connor, D.O. prescribe under Medicare Part D?
In 2024, Kaitlin Ann O'Connor, D.O. had 100 Medicare Part D claims for 40 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Kaitlin Ann O'Connor, D.O.'s MIPS final score?
The 2023 MIPS final score is 74.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.