Doctor profile · Federal record
Dr. Patrick Cahill, D.O.
Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Stamford, CT
- NPI 1134229909
- Accepts Medicare
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
999 Summer St, Suite 401
Stamford, CT 069055546
(203) 353-9099
fax (203) 353-9699
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- June 13, 2013
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207V00000X — NUCC code
- State license (1)
- Connecticut #000548
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134229909. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
163
Distinct HCPCS
4
Medicare allowed
$7,983
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 57 | 49 | $95 | |
81002 |
Urinalysis, manual test | 51 | 42 | $3 | |
Q0091 |
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | 28 | 28 | $46 | |
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 27 | 27 | $42 |
In context: peer comparison
Among 8 peers in this city , average services per provider: 36. This provider delivers 4.5× the peer median.Open Payments
Industry payments received
All-time total
$1,129
Transactions
47
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 16 | $468.93 | |
| Astellas Pharma US Inc | 8 | $143.56 | |
| Biogen, Inc. | 4 | $99.00 | |
| Exact Sciences Corporation | 3 | $97.26 | |
| Sumitomo Pharma America, Inc. | 3 | $63.73 | |
| PFIZER INC. | 3 | $47.13 | |
| Organon Llc | 2 | $41.70 | |
| SHIELD THERAPEUTICS INC | 2 | $40.74 | |
| CooperSurgical, Inc. | 2 | $38.40 | |
| Bayer Healthcare Pharmaceuticals Inc. | 2 | $36.92 | |
| Merck Sharp & Dohme LLC | 1 | $26.79 | |
| Aspira Women's Health Inc | 1 | $24.89 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
99
Patients
11
Total drug cost
$2,644
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 26 | 0 | $93 |
| Estradiol | Generic | 20 | 0 | $1,318 |
| Fluconazole | Generic | 16 | 11 | $108 |
| Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) | Brand | 14 | 0 | $274 |
| Azithromycin | Generic | 12 | 0 | $56 |
| Dotti (Estradiol) | Brand | 11 | 0 | $794 |
Hospital affiliations
Frequently asked questions
What is Dr. Patrick Cahill's medical specialty?
Dr. Patrick Cahill practices Obstetrics & Gynecology Physician in Stamford, CT.
Where does Dr. Patrick Cahill practice?
Dr. Patrick Cahill practices at 999 Summer St, Stamford, CT 069055546. Office phone: 2033539099.
What is Dr. Patrick Cahill's NPI?
Dr. Patrick Cahill's National Provider Identifier (NPI) is 1134229909, issued by NPPES.
Does Dr. Patrick Cahill accept Medicare assignment?
Yes. Dr. Patrick Cahill accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Patrick Cahill commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Urinalysis, manual test (HCPCS 81002); Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (HCPCS Q0091). Source: CMS Medicare Physician & Other Practitioners file.