Robert Colby
NPI 1588458970 · Nurse Practitioner · Waterloo, IA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Colby is a Nurse Practitioner provider in Waterloo, IA (NPI 1588458970).
Provider details
- NPI number
- 1588458970
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- A184118 (IA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
Mailing address
Registry dates
- Enumerated
- 2025-04-08
- Last updated
- 2025-10-01
- Certified
- 2025-10-01
Frequently asked questions
- What is Robert Colby's NPI number?
- Robert Colby's National Provider Identifier (NPI) is 1588458970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Colby's specialty?
- Robert Colby is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robert Colby located?
- Robert Colby's practice location on file with NPPES is 1717 W Ridgeway Ave, Waterloo, IA 50701-4543.
- What is Robert Colby's phone number?
- The practice phone number listed in the NPPES registry for Robert Colby is (319) 233-0340.
- Does Robert Colby accept Medicare?
- Robert Colby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Colby's NPI active?
- Yes — Robert Colby's NPI (1588458970) is active in the NPPES registry as of the last update on 2025-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.