Catherine M. O'Brien, FNP
Family Nurse Practitioner · Watertown, NY
Catherine M. O'Brien, FNP is a family nurse practitioner with a practice address in Watertown, New York, and NPI 1154330751, issued on Aug 5, 2006. Check the license (New York F332600-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Catherine M. O'Brien
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- F332600-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 26495 State Route 3, Watertown, NY 13601
- Phone
- (315) 786-1924
- Enumerated
- Aug 5, 2006
- Record last updated
- May 21, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (315) 786-0823
- Medicaid ID
- 02011310 NY
- Medicare enrollment
- Enrolled (PECOS I20040720000226); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →
Also registered at 26495 State Route 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joan Hawthorne, FNP-CFamily Nurse Practitioner1770592362
- Vinoth Kaliappan, PT,DPTPhysical Therapist1922973924
- Manuel Orellana Flores, PTPhysical Therapist1043029978
- Rebecca Williams, PTPhysical Therapist1477362036
Verify Catherine M. O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F332600-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average family nurse practitioner in 2024
813 Medicare Part D claims for 340 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Clobetasol Propionate89 claims
- Fluticasone Propionate72 claims
- Fluorouracil53 claims
- Nystatin50 claims
- Ketoconazole35 claims
- Doxycycline Hyclate34 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): 84.2 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: $2,927.40
124 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 99,489 providers of this specialty with any payment received $650.95 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
- Northern Nurse Practitioners-Family Health PLLCWatertown, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine M. O'Brien among 14,805 family nurse practitioner records in New York
Catherine M. O'Brien, FNP is one of 14,805 family nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 91% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated1998 · median 2019 among the 7,239 with a school on file
- Record last updated2008 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
58 family nurse practitioner records list a practice address in Watertown
They are 58 of the 1,380 NPPES records with a practice address in Watertown, and 14,805 family nurse practitioner records in New York.
All 14,805 in New York → Every provider in Watertown → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Lynn Barber, CRNAWatertown, NY 136011285661900
- Paul Barter, FNPWatertown, NY 136011679550552
- Nancy Coughlin, RN,FNP-CWatertown, NY 136011518960822
- Debbie Elliott, FNPWatertown, NY 136011861470908
- Anne Hall, NPWatertown, NY 136011114969367
- Joan Hawthorne, FNP-CWatertown, NY 136011770592362
- Anna Hyde, FNP-CWatertown, NY 136011588661011
- Kathryn Kolton, FNPWatertown, NY 136011811990856
Common questions
What is Catherine M. O'Brien, FNP's NPI number?
Catherine M. O'Brien, FNP's National Provider Identifier (NPI) is 1154330751, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine M. O'Brien, FNP located?
The NPPES record lists a practice address at 26495 State Route 3, Watertown, NY, 13601. Phone: (315) 786-1924. Providers update this record themselves, so call before visiting.
How can I verify Catherine M. O'Brien, FNP's license?
NPPES lists New York license number F332600-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Catherine M. O'Brien, FNP prescribe under Medicare Part D?
In 2024, Catherine M. O'Brien, FNP had 813 Medicare Part D claims for 340 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Catherine M. O'Brien, FNP's MIPS final score?
The 2023 MIPS final score is 84.2 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.