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ELLEN KNOLL DIEGO M.D.
NPI 1538553136
Pediatrics in Minneapolis, MN

Active since March 23, 2015PECOS EnrolledAccepts Medicare Assignment
720 WASHINGTON AVE SE STE 200, MINNEAPOLIS, MN 55414(603) 991-9474 Get Directions Write a Review

NPPES record last updated: June 16, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Ellen Knoll Diego M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ELLEN KNOLL DIEGO M.D. (NPI 1538553136) is an individual pediatrics provider in Minneapolis, Minnesota, licensed in Minnesota (71237) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS and is a graduate of University Of Cincinnati College Of Medicine (2015).

NPPES Registry Identity

NPI1538553136
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameELLEN KNOLL DIEGOCredential: M.D.
Location Address720 WASHINGTON AVE SE STE 200Minneapolis, MN 55414-2924
Mailing Address720 Washington Ave Se Ste 200Minneapolis, MN 55414-2924 · (603) 991-9474
Phone(603) 991-9474
Sole ProprietorNo
Medical School CMSUniversity Of Cincinnati College Of MedicineGraduated 2015
Enumeration DateMarch 23, 2015
Last NPPES UpdateJune 16, 2025
NPPES CertifiedJune 16, 2025
✔ NPI 1538553136 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in MN · 71237✔ Licensed in VT · 042.0014070
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
720 WASHINGTON AVE SE STE 200, Minneapolis, MN 55414
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Other Names 1

Former Name (1)Ellen Patricia Knoll

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, Sanford Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ellen Knoll Diego M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID143522433
PECOS Enrollment IDI20220512002778
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 55414 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.82 typical visit price
range $56.00 – $168.28
Typical copayment $21.45 (range $14.00 – $42.07)
Most-billed visit code 99203
Established Patient
$98.61 typical visit price
range $18.32 – $138.04
Typical copayment $24.65 (range $4.58 – $34.51)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KIRSI ELIZABETH KEENER
Nurse Practitioner (Family)
720 WASHINGTON AVE SE STE 200
MINNEAPOLIS, MN 55414
Hennepin County (612) 884-0851
SCOTT BIGGERSTAFF D.O.
Internal Medicine
720 WASHINGTON AVE SE STE 200
MINNEAPOLIS, MN 55414
Hennepin County (612) 884-0600
UNIVERSITY OF MINNESOTA PHYSICIANS
Clinic/Center (Multi-Specialty)
720 WASHINGTON AVE SE STE 200
MINNEAPOLIS, MN 55414
Hennepin County (612) 672-7422
SYDNEY MARTHA JOHNSON-HOLT
Nurse Practitioner (Acute Care)
720 WASHINGTON AVE SE STE 200
MINNEAPOLIS, MN 55414
Hennepin County (612) 884-0600
AMY DOBBE CNP
Nurse Practitioner (Family)
720 WASHINGTON AVE SE STE 200
MINNEAPOLIS, MN 55414
Hennepin County (612) 273-8383
CHIARA TERESA KRISTINA COLL ANDAHAZY PA-C
Physician Assistant
720 WASHINGTON AVE SE STE 200
MINNEAPOLIS, MN 55414
Hennepin County (612) 884-0600

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ellen Diego's NPI number?

The NPI number for Ellen Diego is 1538553136. It was assigned to this individual provider in the NPPES registry on March 23, 2015. The provider is also known as Ellen Patricia Knoll.

Where is Ellen Diego located?

Ellen Diego practices at 720 Washington Ave SE Ste 200, Minneapolis, MN 55414. The listed phone number is (603) 991-9474.

What is Ellen Diego's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Ellen Diego enrolled in Medicare?

Yes. Ellen Diego is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Ellen Diego accept?

Health plans from Medica and Sanford Health Plan list Ellen Diego as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Ellen Diego was last updated on June 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.