Allessandro Girolamo, M.D.
Internal Medicine Physician · Acton, MA
Allessandro Girolamo, M.D. is an internal medicine physician with a practice address in Acton, Massachusetts, and NPI 1689636300, issued on Apr 6, 2006. Check the license (Massachusetts 204735, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Allessandro Girolamo
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 204735 MA
Self-reported in NPPES; status is on the state search - Practice location
- 321 Main St, Acton, MA 01720
- Phone
- (978) 635-8700
- Enumerated
- Apr 6, 2006
- Record last updated
- Mar 8, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (978) 635-8920
- Medicaid ID
- 0103811 MA
- Medicare enrollment
- Enrolled (PECOS I20100512000028); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 321 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Bechtel, NPNurse Practitioner1144578626
- Meryl BergerNurse Practitioner1922600220
- Louis Berk, M.D.Family Medicine Physician1730501875
- Elizabeth Berman, RDN, LDNRegistered Dietitian1679949143
- Christine Brown, M.D.Internal Medicine Physician1588861660
- Samuel BrownClinical Social Worker1336576065
Verify Allessandro Girolamo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 204735Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% more Medicare Part D claims than the average internal medicine physician in 2024
3,924 Medicare Part D claims for 568 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium574 claims
- Lisinopril287 claims
- Amlodipine Besylate207 claims
- Losartan Potassium146 claims
- Hydrochlorothiazide144 claims
- Levothyroxine Sodium106 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): 87.1 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
- Acton Medical Associates PCActon, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allessandro Girolamo among 6,825 internal medicine physician records in Massachusetts
Allessandro Girolamo, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1997 · median 2004 among the 4,103 with a school on file
- Record last updated2017 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 internal medicine physician records list a practice address in Acton
They are 17 of the 556 NPPES records with a practice address in Acton, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Acton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christine Brown, M.D.Acton, MA 017201588861660
- Amy Churchill, MDActon, MA 017201033171749
- Peter Demartino, M.D.Acton, MA 017201043292360
- Ingrid Gorman, M.D.Acton, MA 017201053302158
- Edwin Knights, MDActon, MA 017201801885512
- Deborah Kovacs, MDActon, MA 017201386634772
- Teli Leung-Galecki, M.D.Acton, MA 017201043363088
- Amy Lo, M.D.Acton, MA 017201174783526
Common questions
What is Allessandro Girolamo, M.D.'s NPI number?
Allessandro Girolamo, M.D.'s National Provider Identifier (NPI) is 1689636300, issued on Apr 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Allessandro Girolamo, M.D. located?
The NPPES record lists a practice address at 321 Main St, Acton, MA, 01720. Phone: (978) 635-8700. Providers update this record themselves, so call before visiting.
How can I verify Allessandro Girolamo, M.D.'s license?
NPPES lists Massachusetts license number 204735, 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 Allessandro Girolamo, M.D. prescribe under Medicare Part D?
In 2024, Allessandro Girolamo, M.D. had 3,924 Medicare Part D claims for 568 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Allessandro Girolamo, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.1 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.