Rebecca L. Eisenberg, M.D.
Medical Oncology Physician · Sanford, ME
Rebecca L. Eisenberg, M.D. is a medical oncology physician with a practice address in Sanford, Maine, and NPI 1518080639, issued on Apr 6, 2007. Check the license (Maine MD23794, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Rebecca L. Eisenberg
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- MD23794 ME
231351 MA
17501 NH
Self-reported in NPPES; status is on the state search - Practice location
- 27 Industrial Ave Ste 101, Sanford, ME 04073
- Phone
- (207) 294-5800
- Enumerated
- Apr 6, 2007
- Record last updated
- Apr 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210413000451); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 22 in Maine → Look up another NPI →
Also registered at 27 Industrial Ave Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Batty, MDHematology & Oncology Physician1003020413
- Jenna Jaunich, PA-CPhysician Assistant1457944001
- Amit Sanyal, MDHematology (Internal Medicine) Physician1831187707
Verify Rebecca L. Eisenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD23794Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% more Medicare Part D claims than the average medical oncology physician in 2024
751 Medicare Part D claims for 154 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 79 claims were for opioids.
Most prescribed
- Prochlorperazine Maleate78 claims
- Anastrozole65 claims
- Dexamethasone56 claims
- Ondansetron Hcl53 claims
- Oxycodone Hcl41 claims
- Alendronate Sodium36 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 MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- MainehealthPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rebecca L. Eisenberg among 22 medical oncology physician records in Maine
Rebecca L. Eisenberg, M.D. is one of 22 medical oncology physician records with a practice address in Maine. 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 2007, is newer than 73% of them.
- NPI issued2007 · 73% of these records are older, 18% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2000 · median 1992 among the 12 with a school on file
- Record last updated2021 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Maine
There are 22 medical oncology physician records in Maine.
All 22 in Maine → Every provider in Sanford → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Daniel Hayes, MDScarborough, ME 040741245200153
- Susan Miesfeldt, MDScarborough, ME 040741043281959
- Scot Remick, MDScarborough, ME 040741417977067
- Jessica Bian, M.D.South Portland, ME 041061821435140
- Matthew Kulke, MDSouth Portland, ME 041061407823081
- Vatche Tchekmedyian, M.D.South Portland, ME 041061760777635
- John Gullo, MDBrunswick, ME 040111700865243
- Thomas Keating, MDBrunswick, ME 040111609847524
Common questions
What is Rebecca L. Eisenberg, M.D.'s NPI number?
Rebecca L. Eisenberg, M.D.'s National Provider Identifier (NPI) is 1518080639, issued on Apr 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca L. Eisenberg, M.D. located?
The NPPES record lists a practice address at 27 Industrial Ave Ste 101, Sanford, ME, 04073. Phone: (207) 294-5800. Providers update this record themselves, so call before visiting.
How can I verify Rebecca L. Eisenberg, M.D.'s license?
NPPES lists Maine license number MD23794, 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 Rebecca L. Eisenberg, M.D. prescribe under Medicare Part D?
In 2024, Rebecca L. Eisenberg, M.D. had 751 Medicare Part D claims for 154 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Rebecca L. Eisenberg, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.1 of 100. 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.