IndividualActive
John Longo, MD
NPI 1104811835 · Radiation Oncology Physician · Carroll, IA
John Longo, MD is a Radiation Oncology Physician provider in Carroll, IA (NPI 1104811835).
Provider details
- NPI number
- 1104811835
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 30135 (IA)
Specialties & taxonomies
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.
Practice location
311 S Clark St
Carroll, IA 51401-3038
Phone: (712) 792-8265
Fax: (712) 792-8264
Street-level locationGet directions
Mailing address
657 N 57th Ave
Omaha, NE 68132-2037
Registry dates
- Enumerated
- 2005-09-19
- Last updated
- 2008-10-02
Frequently asked questions
- What is John Longo's NPI number?
- John Longo's National Provider Identifier (NPI) is 1104811835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Longo's specialty?
- John Longo is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Longo located?
- John Longo's practice location on file with NPPES is 311 S Clark St, Carroll, IA 51401-3038.
- What is John Longo's phone number?
- The practice phone number listed in the NPPES registry for John Longo is (712) 792-8265.
- Is John Longo's NPI active?
- Yes — John Longo's NPI (1104811835) is active in the NPPES registry as of the last update on 2008-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.