Marco Loi, CRNA
Certified Registered Nurse Anesthetist · Waltham, MA
Marco Loi, CRNA is a certified registered nurse anesthetist with a practice address in Waltham, Massachusetts, and NPI 1083970495, issued on Apr 10, 2012. Check the license (Massachusetts RN274270, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marco Loi
- Credential
- CRNA
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License number
- RN274270 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1440 Main St, Waltham, MA 02451
- Phone
- (781) 891-9300
- Enumerated
- Apr 10, 2012
- Record last updated
- Jan 23, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (781) 891-9305
- Medicare enrollment
- Enrolled (PECOS I20121019000203); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 1,342 in Massachusetts → Look up another NPI →
Also registered at 1440 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Murat Avadikoglu, M.D.Anesthesiology Physician1174644231
- Peter Chang, M.D.Ophthalmology Physician1801107859
- Karapet Guyumdzhyan, CRNACertified Registered Nurse Anesthetist1215257548
- Jennifer Smith, CRNACertified Registered Nurse Anesthetist1952694432
Verify Marco Loi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN274270Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 67.2 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 2 group practices
- Icon Anesthesia Services OF New England LLCMiddleton, MA
- Skyline Anesthesia PLLCNashua, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marco Loi among 1,342 certified registered nurse anesthetist records in Massachusetts
Marco Loi, CRNA is one of 1,342 certified registered nurse anesthetist records with a practice address in Massachusetts. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 51% of them.
- NPI issued2012 · 51% of these records are older, 46% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2012 · median 2013 among the 1,006 with a school on file
- Record last updated2014 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Certified Registered Nurse Anesthetist providers in Massachusetts
There are 1,342 certified registered nurse anesthetist records in Massachusetts.
All 1,342 in Massachusetts → Every provider in Waltham → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Karapet Guyumdzhyan, CRNAWaltham, MA 024511215257548
- Kathleen Harrington, CRNAWaltham, MA 024511467539825
- Judith Manzer, CRNAWaltham, MA 024511831276310
- John McNemar, DNAP, CRNAWaltham, MA 024511295798890
- Susan PayneWaltham, MA 024511447370838
- Jennifer Smith, CRNAWaltham, MA 024511952694432
- Margaret Pothier, CRNABrookline, MA 024461730285099
- Nikki-Taylor DowNewton, MA 024581134788409
Common questions
What is Marco Loi, CRNA's NPI number?
Marco Loi, CRNA's National Provider Identifier (NPI) is 1083970495, issued on Apr 10, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Marco Loi, CRNA located?
The NPPES record lists a practice address at 1440 Main St, Waltham, MA, 02451. Phone: (781) 891-9300. Providers update this record themselves, so call before visiting.
How can I verify Marco Loi, CRNA's license?
NPPES lists Massachusetts license number RN274270, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
What is Marco Loi, CRNA's MIPS final score?
The 2023 MIPS final score is 67.2 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.