What is William Longo's NPI number?

William Longo's National Provider Identifier (NPI) is 1861471179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Longo's specialty?

William Longo is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).

Where is William Longo located?

William Longo's practice location on file with NPPES is 520 Saybrook Rd, Middletown, CT 06457-4700.

What is William Longo's phone number?

The practice phone number listed in the NPPES registry for William Longo is (860) 346-2608.

Is William Longo's NPI active?

Yes — William Longo's NPI (1861471179) is active in the NPPES registry as of the last update on 2010-07-28.

IndividualActive

William Longo, M.D.

NPI 1861471179 · Surgery Physician · Middletown, CT

William Longo, M.D. is a Surgery Physician provider in Middletown, CT (NPI 1861471179).

Provider details

NPI number: 1861471179
Entity type: Individual
Primary specialty: Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 023666 (CT)

Practice location

520 Saybrook Rd

Middletown, CT 06457-4700

Phone: (860) 346-2608

Fax: (860) 347-4691

Street-level locationGet directions

More CT providers

Mailing address

239 Old Mill Rd

Middletown, CT 06457-2419

Specialties & taxonomies

Surgery PhysicianPrimary208600000XLicense 023666 (CT)
Allopathic & Osteopathic Physicians
Vascular Surgery Physician2086S0129XLicense 023666 (CT)
Allopathic & Osteopathic Physicians
Surgical Oncology Physician2086X0206XLicense 023666 (CT)
Allopathic & Osteopathic Physicians
Colon & Rectal Surgery Physician208C00000XLicense 023666 (CT)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2006-01-13
Last updated: 2010-07-28

Frequently asked questions

What is William Longo's NPI number?: William Longo's National Provider Identifier (NPI) is 1861471179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is William Longo's specialty?: William Longo is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
Where is William Longo located?: William Longo's practice location on file with NPPES is 520 Saybrook Rd, Middletown, CT 06457-4700.
What is William Longo's phone number?: The practice phone number listed in the NPPES registry for William Longo is (860) 346-2608.
Is William Longo's NPI active?: Yes — William Longo's NPI (1861471179) is active in the NPPES registry as of the last update on 2010-07-28.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions