Individual provider

Neil Thayil, MD

Diagnostic Radiology Physician Medicare enrolled

Neil Thayil, MD is a Diagnostic Radiology Physician in Boston, MA, registered under NPI 1144591801. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.

Getting there

The practice address on file is 820 HARRISON AVE DEPT.OF RADIOLOGY , FGH BUILDING , 3RD FLOOR, Boston, MA 02118. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

820 HARRISON AVE DEPT.OF RADIOLOGY , FGH BUILDING , 3RD FLOOR, Boston, MA 02118 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
292428 NY Diagnostic Radiology Physician primary
252113 MA Diagnostic Radiology Physician

Licences are recorded in 2 states: NY, MA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.

Medicare (PECOS)
Status
Approved
Provider type
Practitioner - Diagnostic Radiology
PAC ID
7012130305

Enrolled in Medicare 5 times, across 5 states:

StateEnrollment IDProvider type
New York I20180516001742 Practitioner - Diagnostic Radiology
Michigan I20230605000797 Practitioner - Diagnostic Radiology
Florida I20240315003601 Practitioner - Diagnostic Radiology
Illinois I20240504000249 Practitioner - Diagnostic Radiology
Arizona I20240916003199 Practitioner - Diagnostic Radiology

Medicare enrolment is recorded as approved under the provider type Practitioner - Diagnostic Radiology. There are 5 separate enrolment records across 5 states (NY, MI, FL, IL, AZ). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.

Licensed in 2 states

This provider holds licences in 2 states: Massachusetts and New York. The practice address on file is in Boston, MA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.

MA Massachusetts practice address
Licence
252113
Specialty
Diagnostic Radiology Physician
Verify with the MA board →
NY New York
Licence
292428
Specialty
Diagnostic Radiology Physician
Verify with the NY board →

Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.

What Diagnostic Radiology covers

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease. NUCC Health Care Provider Taxonomy, code 2085R0202X
Allopathic & Osteopathic Physicians Radiology Diagnostic Radiology

All registered taxonomy codes

This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
2085R0202X Diagnostic Radiology Physician Diagnostic Radiology 292428 NY primary
2085R0202X Diagnostic Radiology Physician Diagnostic Radiology 252113 MA

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1144591801 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateJan 25, 2012
Last updatedJan 31, 2020
StatusActive
Sole proprietorYes
CredentialMD
Practice address 820 HARRISON AVE
DEPT.OF RADIOLOGY , FGH BUILDING , 3RD FLOOR
Boston, MA 02118
(617) 414-5135
Mailing address 188 CHURCH ST
Saratoga Springs, NY 12866
The last update on file is Jan 31, 2020. Providers are only required to update NPPES when their information changes, so an older date does not necessarily mean the details are wrong — but it is worth a quick call before you travel.

Number check

1144591801 passes the NPI check digit test The final digit 1 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 1 4 4 5 9 1 8 0
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 1 8 4 1 9 2 8 0

Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1144591801?
NPI 1144591801 is the National Provider Identifier assigned to Neil Thayil, MD in Boston, MA. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Diagnostic Radiology cover?
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
How do I contact Neil Thayil, MD?
The phone number on file with NPPES is (617) 414-5135, last updated Jan 31, 2020. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Does Neil Thayil, MD accept Medicare?
This NPI has an approved Medicare enrolment in PECOS, which means the provider is enrolled to bill Medicare. Enrolment does not guarantee they are accepting new Medicare patients — verify directly with the office.
Is NPI 1144591801 a valid number?
Yes. 1144591801 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.