Catherine Eisner Nielsen, MD
Family Medicine Physician · Oakland, ME
Catherine Eisner Nielsen, MD is a family medicine physician with a practice address in Oakland, Maine, and NPI 1588654743, issued on Oct 27, 2005. Check the license (Maine 014189, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Catherine Eisner Nielsen
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 014189 ME
Self-reported in NPPES; status is on the state search - Practice location
- 9 Pleasant St, Oakland, ME 04963
- Phone
- (207) 465-2181
- Enumerated
- Oct 27, 2005
- Record last updated
- Oct 16, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (207) 465-4629
- Medicaid ID
- 301870099 ME
- Medicare enrollment
- Enrolled (PECOS I20050614000870); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,172 in Maine → Look up another NPI →
Also registered at 9 Pleasant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yusuf AbdiPhysician Assistant1700253671
- Hope Blais, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1407584626
- Rocio Veronica Carbona, PA-CMedical Physician Assistant1518215375
- Nancy Filliter, MDFamily Medicine Physician1851381008
- Jazmine LevesqueNurse Practitioner1669117453
Verify Catherine Eisner Nielsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 014189Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
126 Medicare Part D claims for 25 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Buprenorphine-Naloxone52 claims
- Buprenorphine Hcl35 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): 79.3 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).
Bills Medicare through one group practice
- Mainegeneral Medical CenterGardiner, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Eisner Nielsen among 1,172 family medicine physician records in Maine
Catherine Eisner Nielsen, MD is one of 1,172 family medicine physician records with a practice address in Maine. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1993 · median 2008 among the 668 with a school on file
- Record last updated2012 · 60% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family medicine physician records list a practice address in Oakland
They are 3 of the 108 NPPES records with a practice address in Oakland, and 1,172 family medicine physician records in Maine.
All 1,172 in Maine → Every provider in Oakland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nancy Filliter, MDOakland, ME 049631851381008
- Joseph McCue, D.O.Oakland, ME 049631710398896
- John Peterson, M.D.East Machias, ME 049631578616967
- Robert Schlager, M.D.Pittsfield, ME 049671467432955
- Mohammad Shareef, M.D.Pittsfield, ME 049671417339854
- David Axelman, M.D.Norridgewock, ME 049571306051123
- Jaclyn Israel, DONorridgewock, ME 049571154904712
- Sarah Tomasz, DONorridgewock, ME 049571144678970
Common questions
What is Catherine Eisner Nielsen, MD's NPI number?
Catherine Eisner Nielsen, MD's National Provider Identifier (NPI) is 1588654743, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Eisner Nielsen, MD located?
The NPPES record lists a practice address at 9 Pleasant St, Oakland, ME, 04963. Phone: (207) 465-2181. Providers update this record themselves, so call before visiting.
How can I verify Catherine Eisner Nielsen, MD's license?
NPPES lists Maine license number 014189, 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 Catherine Eisner Nielsen, MD prescribe under Medicare Part D?
In 2024, Catherine Eisner Nielsen, MD had 126 Medicare Part D claims for 25 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Catherine Eisner Nielsen, MD's MIPS final score?
The 2023 MIPS final score is 79.3 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.