Louis Ercolani, M.D.
Nephrology Physician · Boston, MA
Louis Ercolani, M.D. is a nephrology physician with a practice address in Boston, Massachusetts, and NPI 1164407516, issued on Dec 8, 2005. Check the license (Massachusetts 51939, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Louis Ercolani
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 51939 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 726-5050
- Enumerated
- Dec 8, 2005
- Record last updated
- Sep 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (617) 724-1122
- Medicaid ID
- 6171494 MA
- Medicare enrollment
- Enrolled (PECOS I20050323000335); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1973
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 417 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Affan Aamir, MD, PHARMD, RPHStudent in an Organized Health Care Education/Training Program1821890377
- Matthew AbadirAnesthesiology Physician1699120550
- Taimur AbbasiInternal Medicine Physician1841673522
- Megan Abbott, MDAnesthesiology Physician1730839333
- Moustafa AbdallaStudent in an Organized Health Care Education/Training Program1952046062
- Shadi Abdar Esfahani, MD, MPHDiagnostic Radiology Physician1497137590
Verify Louis Ercolani in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 51939Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average nephrology physician in 2024
548 Medicare Part D claims for 81 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Calcitriol100 claims
- Allopurinol52 claims
- Sevelamer Carbonate42 claims
- Furosemide30 claims
- Velphoro19 claims
- Amlodipine Besylate18 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
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Louis Ercolani among 417 nephrology physician records in Massachusetts
Louis Ercolani, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1973 · median 2001 among the 295 with a school on file
- Record last updated2011 · 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 Boston → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Dennis Ausiello, MDBoston, MA 021141316938962
- Hasan Bazari, MDBoston, MA 021141811978091
- Ishir Bhan, MDBoston, MA 021141275519993
- Leslie Fang, MDBoston, MA 021141558351734
- Garner Haupert, MDBoston, MA 021141073503348
- Herbert Lin, MD PHDBoston, MA 021141245211960
- Sagar Nigwekar, MDBoston, MA 021141710939848
- John Niles, MDBoston, MA 021141316912033
Common questions
What is Louis Ercolani, M.D.'s NPI number?
Louis Ercolani, M.D.'s National Provider Identifier (NPI) is 1164407516, issued on Dec 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Louis Ercolani, M.D. located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 726-5050. Providers update this record themselves, so call before visiting.
How can I verify Louis Ercolani, M.D.'s license?
NPPES lists Massachusetts license number 51939, 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 Louis Ercolani, M.D. prescribe under Medicare Part D?
In 2024, Louis Ercolani, M.D. had 548 Medicare Part D claims for 81 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.