Patrick Cahill, D.O.
Obstetrics & Gynecology Physician · Stamford, CT
Patrick Cahill, D.O. is an obstetrics & gynecology physician with a practice address in Stamford, Connecticut, and NPI 1134229909, issued on Sep 22, 2006. Check the license (Connecticut 000548, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Patrick Cahill
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 000548 CT
Self-reported in NPPES; status is on the state search - Practice location
- 999 Summer St, Stamford, CT 06905
- Phone
- (203) 353-9099
- Enumerated
- Sep 22, 2006
- Entity
- Type 1 · individual
Also registered at 999 Summer St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Coppolo, APRNFamily Nurse Practitioner1750815098
- W Crouch, LCSWClinical Social Worker1609802651
- Brittany FinchSpecialist1245420900
- Peter Gardell, DDSDentist1639297930
- Joseph Grabicki, D.P.T.Specialist1760515092
- Andrew Grunebaum, PH.D.Clinical Psychologist1386782290
Verify Patrick Cahill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 000548Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
17% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
220 Medicare Part D claims for 63 beneficiaries, against an average of 188 among the 27,363 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 15 claims were for opioids.
Most prescribed
- Estradiol27 claims
- Oxycodone Hcl15 claims
- Armour Thyroid13 claims
- Nitrofurantoin Mono-Macro13 claims
- Clobetasol Propionate12 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: $1,129.05
47 payments, mostly food and beverage; the largest payer was Abbvie Inc.. The 20,757 providers of this specialty with any payment received $1,147.37 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.
One hospital or facility affiliation
- Coastal Obstetrics And GynecologyStamford, CT
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
37 obstetrics & gynecology physician records list a Stamford practice address
They are 37 of the 2,774 NPPES records with a Stamford practice address, and 682 obstetrics & gynecology physician records in Connecticut.
All 37 in Stamford → All 682 in Connecticut → Every provider in Stamford →
Other obstetrics & gynecology physician records in Connecticut
- Anne Abbate, MDBridgeport, CT1497323562
- Sonya Abdel-Razeq, MDNew Haven, CT1265415350
- Roxanne Abder, MDTrumbull, CT1790840809
- Patricia Abruna, M.D.Fairfield, CT1023246832
- Ami Acharya, M.D.Hamden, CT1437131760
- Marie Achong, M.D.Hartford, CT1700806213
- Elizabeth Ackley, M.D.New Haven, CT1316474091
- Sharon Adler, MDBristol, CT1235148438
- Sarp Aksel, M.D.Stamford, CT1245611441
- Elizabeth Alexander, MDNorwalk, CT1669882635
Common questions
What is Patrick Cahill, D.O.'s NPI number?
Patrick Cahill, D.O.'s National Provider Identifier (NPI) is 1134229909, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Patrick Cahill, D.O. located?
The NPPES record lists a practice address at 999 Summer St, Stamford, CT, 06905. Phone: (203) 353-9099. Providers update this record themselves, so call before visiting.
How can I verify Patrick Cahill, D.O.'s license?
NPPES lists Connecticut license number 000548, 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 Patrick Cahill, D.O. prescribe under Medicare Part D?
In 2024, Patrick Cahill, D.O. had 220 Medicare Part D claims for 63 beneficiaries; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.