Steven D. Tiernan, PA
Physician Assistant · Watertown, NY
Steven D. Tiernan, PA is a physician assistant with a practice address in Watertown, New York, and NPI 1437191277, issued on Jun 12, 2006. Check the license (New York 009062, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Steven D. Tiernan
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 009062 NY
Self-reported in NPPES; status is on the state search - Practice location
- 22670 Summit Dr, Watertown, NY 13601
- Phone
- (315) 755-2560
- Enumerated
- Jun 12, 2006
- Record last updated
- Aug 31, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (315) 755-2597
- Medicaid IDs
- 03731160 NY
00354316 NY - Medicare enrollment
- Enrolled (PECOS I20050112000849); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 15,555 in New York → Look up another NPI →
Also registered at 22670 Summit Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jade Culp, LMSWSocial Worker1992453161
Verify Steven D. Tiernan 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 009062Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.3 times the Medicare Part D claims of the average physician assistant in 2024
3,587 Medicare Part D claims for 731 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Tamsulosin Hcl1,074 claims
- Finasteride545 claims
- Oxybutynin Chloride Er534 claims
- Myrbetriq190 claims
- Oxybutynin Chloride157 claims
- Gemtesa140 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: $1,195.19
52 payments; by number, the most common kind was food and beverage; the largest payer was Axonics, Inc. The 64,719 providers of this specialty with any payment received $841.65 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 affiliation
- Samaritan Medical CenterAdams, NY · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Steven D. Tiernan among 15,555 physician assistant records in New York
Steven D. Tiernan, PA is one of 15,555 physician assistant records with a practice address in New York. 74% 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 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2002 · median 2018 among the 8,158 with a school on file
- Record last updated2015 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 physician assistant records list a practice address in Watertown
They are 44 of the 1,380 NPPES records with a practice address in Watertown, and 15,555 physician assistant records in New York.
All 15,555 in New York → Every provider in Watertown → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Michelle Boulton, RPA-CWatertown, NY 136011336167709
- Laura Colihan, RPA CWatertown, NY 136011376520627
- Alexandra Davies, R.P.A.Watertown, NY 136011841241148
- Erica Feola, P.A.Watertown, NY 136011104809409
- Carrie Guga, RPA-CWatertown, NY 136011023062445
- Marcus Knapp, PAWatertown, NY 136011861429995
- Michael Lettiere, RPA-CWatertown, NY 136011437114204
- Michael McElheran, PAWatertown, NY 136011760471718
Common questions
What is Steven D. Tiernan, PA's NPI number?
Steven D. Tiernan, PA's National Provider Identifier (NPI) is 1437191277, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven D. Tiernan, PA located?
The NPPES record lists a practice address at 22670 Summit Dr, Watertown, NY, 13601. Phone: (315) 755-2560. Providers update this record themselves, so call before visiting.
How can I verify Steven D. Tiernan, PA's license?
NPPES lists New York license number 009062, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Steven D. Tiernan, PA prescribe under Medicare Part D?
In 2024, Steven D. Tiernan, PA had 3,587 Medicare Part D claims for 731 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
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.