PATRICK J CAHILL (D.O.) – Obstetrics & Gynecology Physician, NPI 1134229909
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
827 OBSTETRICS/GYNECOLOGY in CT
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Provider Addresses for PATRICK J CAHILL (D.O.)
999, Summer Street, Northfield, Stamford, Fairfield County, Connecticut, 06905, United States
SUITE 401
STAMFORD, CT 069055546
Phone: (203) 353-9099
Fax: (203) 353-9699
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 104 Open Payments records for all available years, with a total value of $2,610.
Total Amount is formed as General ($2,610) + Research ($0) + Ownership ($0) = $2,610.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: ABBVIE INC. ($1,003).
Total Amount
$2,610
General + Research + Ownership
Payments
104
Total payment records
General Amount
$2,610
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $1,003 |
| Astellas Pharma US Inc | $269 |
| MAYNE PHARMA COMMERCIAL LLC | $262 |
| Aspira Women's Health Inc | $172 |
| Sumitomo Pharma America, Inc. | $159 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2016-03-25
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20160325000671 | I | Obstetrics/Gynecology | CT | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 57 | 49 | $0 |
| 81002 | Urinalysis, manual test | 51 | 42 | $0 |
| Q0091 | Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | 28 | 28 | $0 |
| G0101 | Cervical or vaginal cancer screening; pelvic and clinical breast examination | 27 | 27 | $0 |
Insurance plans in this area (ZIP 06905)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | CT | |
| O B S T E T R I C S/ G Y N E C O L O G Y | NY | |
| - | CT | |
| Physician Assistant | CT | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CT |
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