Sarah L. Ketchum, M.D.
Hematology & Oncology Physician · South Portland, ME
Sarah L. Ketchum, M.D. is a hematology & oncology physician with a practice address in South Portland, Maine, and NPI 1689781536, issued on Aug 25, 2006. Check the license (Maine 017416, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Sarah L. Ketchum
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 017416 ME
25618 NH
Self-reported in NPPES; status is on the state search - Practice location
- 265 Western Ave, South Portland, ME 04106
- Phone
- (207) 661-0200
- Enumerated
- Aug 25, 2006
- Record last updated
- Apr 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20070911000327); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 265 Western Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Laura Apgar, AG-ACNPAdult Health Nurse Practitioner1366222804
- Megan Bickford, NPAcute Care Nurse Practitioner1023846839
- Noelle Cooper, AGNP-CNurse Practitioner1033633714
- Judith Dickson, AGACNPAcute Care Nurse Practitioner1528825882
- Judit Gellen, M.D.Hematology & Oncology Physician1407817406
- Lauren Menard, NPAcute Care Nurse Practitioner1568352458
Verify Sarah L. Ketchum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 017416Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
341 Medicare Part D claims for 100 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Hydroxyurea45 claims
- Anastrozole34 claims
- Acyclovir20 claims
- Eliquis19 claims
- Prednisone18 claims
- Venclexta17 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: $18.09
1 payment: education; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 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
- MainehealthScarborough, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
12 hematology & oncology physician records list a practice address in South Portland
They are 12 of the 1,143 NPPES records with a practice address in South Portland, and 77 hematology & oncology physician records in Maine.
All 12 in South Portland → All 77 in Maine → Every provider in South Portland →
Other hematology & oncology physician records in Maine
- David AdlerAugusta, ME1851823314
- Erin Adler, D.O.Augusta, ME1053706069
- Jason Adler, MDSouth Portland, ME1194252148
- Erdem Altunel, MDBrewer, ME1619462884
- Astrid Andreescu, MDBrewer, ME1295755635
- Frederick Aronson, MDScarborough, ME1417928334
- Michael Auster, DOSouth Portland, ME1164929451
- Justin Battaglini, MDScarborough, ME1275092520
- Chiara Battelli, MDWestbrook, ME1831398551
- Nicole Batty, MDSanford, ME1003020413
Common questions
What is Sarah L. Ketchum, M.D.'s NPI number?
Sarah L. Ketchum, M.D.'s National Provider Identifier (NPI) is 1689781536, issued on Aug 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sarah L. Ketchum, M.D. located?
The NPPES record lists a practice address at 265 Western Ave, South Portland, ME, 04106. Phone: (207) 661-0200. Providers update this record themselves, so call before visiting.
How can I verify Sarah L. Ketchum, M.D.'s license?
NPPES lists Maine license number 017416, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sarah L. Ketchum, M.D. prescribe under Medicare Part D?
In 2024, Sarah L. Ketchum, M.D. had 341 Medicare Part D claims for 100 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.