Efrain Jose Otero Palacios, MD
Nephrology Physician · Leominster, MA
Efrain Jose Otero Palacios, MD is a nephrology physician with a practice address in Leominster, Massachusetts, and NPI 1114379716, issued on Jul 7, 2016. Check the license (Massachusetts 1023942, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Efrain Jose Otero Palacios
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 1023942 MA
Self-reported in NPPES; status is on the state search - Practice location
- 50 Memorial Dr, Leominster, MA 01453
- Phone
- (978) 466-4535
- Enumerated
- Jul 7, 2016
- Record last updated
- Jul 9, 2025
- Medicare enrollment
- Enrolled (PECOS I20250724000057); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 417 in Massachusetts → Look up another NPI →
Also registered at 50 Memorial Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Aney, MDPsychiatry Physician1104901016
- Rebecca Aslam, R.D.Registered Dietitian1770982340
- William Brodkin, M.D.Internal Medicine Physician1457468670
- Jung-Ming Chen, M.D.Personal Emergency Response Attendant1588620322
Verify Efrain Jose Otero Palacios in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1023942Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average nephrology physician in 2024
193 Medicare Part D claims for 43 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Jardiance31 claims
- Torsemide30 claims
- Lisinopril25 claims
- Chlorthalidone17 claims
- Irbesartan13 claims
- Albuterol Sulfate Hfa12 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 one group practice
- Umass Memorial Medical Group IncLeominster, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Efrain Jose Otero Palacios among 417 nephrology physician records in Massachusetts
Efrain Jose Otero Palacios, MD is one of 417 nephrology physician records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 85% of them.
- NPI issued2016 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2017 · median 2001 among the 295 with a school on file
- Record last updated2025 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Massachusetts
There are 417 nephrology physician records in Massachusetts.
All 417 in Massachusetts → Every provider in Leominster → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Shipen Li, M.D.Leominster, MA 014531811947997
- Gary Noroian, MDLeominster, MA 014531447232046
- Michael Shih, M.D.Leominster, MA 014531598747024
- Francis Zambetti, M.D.Fitchburg, MA 014201295717734
- Rohit Vakil, M.D.Worcester, MA 016041720062920
- Howard Alfred, M.D.Worcester, MA 016051942283627
- Jeffrey Blomstedt, MDGreenfield, MA 013011831180363
- Maria Delrosario, M.D.Worcester, MA 016051609859230
Common questions
What is Efrain Jose Otero Palacios, MD's NPI number?
Efrain Jose Otero Palacios, MD's National Provider Identifier (NPI) is 1114379716, issued on Jul 7, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Efrain Jose Otero Palacios, MD located?
The NPPES record lists a practice address at 50 Memorial Dr, Leominster, MA, 01453. Phone: (978) 466-4535. Providers update this record themselves, so call before visiting.
How can I verify Efrain Jose Otero Palacios, MD's license?
NPPES lists Massachusetts license number 1023942, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Efrain Jose Otero Palacios, MD prescribe under Medicare Part D?
In 2024, Efrain Jose Otero Palacios, MD had 193 Medicare Part D claims for 43 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.