NPPES file of Aug 9, 2026

Robert Colby

Nurse Practitioner · Waterloo, IA

Robert Colby is a nurse practitioner with a practice address in Waterloo, Iowa, and NPI 1588458970, issued on Apr 8, 2025. Check the license (Iowa A184118, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588458970
Name
Robert Colby
Primary taxonomy
Nurse Practitioner 363L00000X
License number
A184118 IA
Self-reported in NPPES; status is on the state search
Practice location
1717 W Ridgeway Ave, Waterloo, IA 50701
Phone
(319) 233-0340
Enumerated
Apr 8, 2025
Record last updated
Oct 1, 2025
Medicare enrollment
Enrolled (PECOS I20250731000214); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 1,294 in Iowa → Look up another NPI →

Also registered at 1717 W Ridgeway Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eric AndresenUrology Physician1710279351
  2. Eric Askeland, M.D.Urology Physician1326272923
  3. Frederick Berneking, PHARM. D.Pharmacotherapy Pharmacist1396713921
  4. Pratibha Dua, MDInternal Medicine Physician1235116369
  5. Dawn Higgins, ARNPNurse Practitioner1487632287
  6. Linsey High, PACPhysician Assistant1659359461

Verify Robert Colby in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license A184118    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Iowa license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Allen Memorial Hospital CorporationWaterloo, IA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Robert Colby among 1,294 nurse practitioner records in Iowa

Robert Colby is one of 1,294 nurse practitioner records with a practice address in Iowa. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 94% of them.

  • NPI issued2025 · 94% of these records are older, 2% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2024 · median 2018 among the 873 with a school on file
  • Record last updated2025 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

96 nurse practitioner records list a practice address in Waterloo

They are 96 of the 1,512 NPPES records with a practice address in Waterloo, and 1,294 nurse practitioner records in Iowa.

All 1,294 in Iowa → Every provider in Waterloo → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Jane Baker, ARNPWaterloo, IA 507011184988610
  2. Barbara Burkle, ARNPWaterloo, IA 507011588618359
  3. Ruselle Debonis, ARNPWaterloo, IA 507011275511230
  4. Tracy Elliott, ARNP, MSNWaterloo, IA 507011588919351
  5. Holly Gaede, NP-C, FNP-BCWaterloo, IA 507011144416488
  6. Annette Geary, FNP-BCWaterloo, IA 507011952362683
  7. Julie Gleason, ARNPWaterloo, IA 507011164726139
  8. Carrayn Gossman, NPWaterloo, IA 507011316170178

Common questions

What is Robert Colby's NPI number?

Robert Colby's National Provider Identifier (NPI) is 1588458970, issued on Apr 8, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Robert Colby located?

The NPPES record lists a practice address at 1717 W Ridgeway Ave, Waterloo, IA, 50701. Phone: (319) 233-0340. Providers update this record themselves, so call before visiting.

How can I verify Robert Colby's license?

NPPES lists Iowa license number A184118, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.