Terry Howland Knowles, DO
Family Medicine Physician · Potsdam, NY
Terry Howland Knowles, DO is a family medicine physician with a practice address in Potsdam, New York, and NPI 1790943918, issued on May 23, 2008. Check the license (New York 253764, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Terry Howland Knowles
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 253764 NY
Self-reported in NPPES; status is on the state search - Practice location
- 50 Leroy St, Potsdam, NY 13676
- Phone
- (315) 265-3300
- Enumerated
- May 23, 2008
- Record last updated
- Nov 11, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (315) 714-3068
- Medicare enrollment
- Enrolled (PECOS I20211018001823); accepts Medicare assignment
- Medical or professional school
- West Virginia School Of Osteopathic Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,417 in New York → Look up another NPI →
Also registered at 50 Leroy St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Adams, FNP-CFamily Nurse Practitioner1164984753
- Caroline Arcand DusseaultOccupational Therapist1144015397
- Mariam Asar, MDChild & Adolescent Psychiatry Physician1649479239
- Timothy Atkinson, M.D.Family Medicine Physician1346239308
- Katherine Baker, RPA-CPhysician Assistant1316971831
- Cynthia Baltazar, M.D.Internal Medicine Physician1790782548
Verify Terry Howland Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 253764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average family medicine physician in 2024
2,550 Medicare Part D claims for 288 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 34 claims were for opioids.
Most prescribed
- Losartan Potassium168 claims
- Atorvastatin Calcium163 claims
- Amlodipine Besylate114 claims
- Levothyroxine Sodium99 claims
- Lisinopril90 claims
- Hydrochlorothiazide86 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.
Bills Medicare through 2 group practices
- Duke University Affiliated Physicians, Inc.Morrisville, NC
- Legacy Healthcare Services IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Terry Howland Knowles among 6,417 family medicine physician records in New York
Terry Howland Knowles, DO is one of 6,417 family medicine physician records with a practice address in New York. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 49% of them.
- NPI issued2008 · 49% of these records are older, 46% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2007 · median 2007 among the 4,188 with a school on file
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family medicine physician records list a practice address in Potsdam
They are 9 of the 445 NPPES records with a practice address in Potsdam, and 6,417 family medicine physician records in New York.
All 6,417 in New York → Every provider in Potsdam → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Timothy Atkinson, M.D.Potsdam, NY 136761346239308
- Vineet BansalPotsdam, NY 136761104068667
- Aaron Fuller, D.O.Potsdam, NY 136761396909008
- Ashley Grimshaw, MDPotsdam, NY 136761073994968
- Mallory Sprague, MDPotsdam, NY 136761366891632
- Leslie Strickland, MDPotsdam, NY 136761912944612
- Alecia Vanwagner, DOPotsdam, NY 136761134304363
- Emily Wood, M.D.Potsdam, NY 136761720427347
Common questions
What is Terry Howland Knowles, DO's NPI number?
Terry Howland Knowles, DO's National Provider Identifier (NPI) is 1790943918, issued on May 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Terry Howland Knowles, DO located?
The NPPES record lists a practice address at 50 Leroy St, Potsdam, NY, 13676. Phone: (315) 265-3300. Providers update this record themselves, so call before visiting.
How can I verify Terry Howland Knowles, DO's license?
NPPES lists New York license number 253764, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Terry Howland Knowles, DO prescribe under Medicare Part D?
In 2024, Terry Howland Knowles, DO had 2,550 Medicare Part D claims for 288 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.