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CALLA AILEEN MARIE LOPEZ NP
NPI 1861298911
Nurse Practitioner in Denver, CO

Active since February 20, 2025PECOS EnrolledAccepts Medicare Assignment
4660 YOSEMITE ST STE 200, DENVER, CO 80238(303) 860-5244 Get Directions Write a Review

NPPES record last updated: May 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 16, 2025, Feb 20, 2025 (2 updates tracked since 2025).

About Calla Aileen Marie Lopez Np NPPES

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

CALLA AILEEN MARIE LOPEZ NP (NPI 1861298911) is an individual nurse practitioner in Denver, Colorado, licensed in Colorado (APN.1000582-NP) and active in the NPI registry since February 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2024).

NPPES Registry Identity

NPI1861298911
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameCALLA AILEEN MARIE LOPEZCredential: NP
Location Address4660 YOSEMITE ST STE 200Denver, CO 80238-4483
Mailing Address5445 Dtc Pkwy Ste 1130Greenwood Village, CO 80111-3038 · (720) 738-9774 · Fax (720) 817-8470
Phone(303) 860-5244
Sole ProprietorYes
Medical School CMSOtherGraduated 2024
Enumeration DateFebruary 20, 2025
Last NPPES UpdateMay 16, 20252 updates tracked since enumeration
NPPES CertifiedMay 16, 2025
✔ NPI 1861298911 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CO · APN.1000582-NP
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
4660 YOSEMITE ST STE 200, Denver, CO 80238
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Calla Aileen Marie Lopez Np 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 ID6103319504
PECOS Enrollment IDI20251204000057
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.

Medicare Billing Reassignment

Medicare enrollment records show Calla Lopez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mountain View Pain Specialists
17 mi
Pain Medicine
10375 PARK MEADOWS DR STE 270
Lone Tree, CO 80124
  • Reassigned Medicare billing, Colorado enrollment
  • 22 clinicians in this Medicare group
NPI 1912403544 (303) 351-5995

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80238 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
$89.43 typical visit price
range $58.06 – $174.82
Typical copayment $22.35 (range $14.51 – $43.70)
Most-billed visit code 99203
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
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 4

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

FRANCESCA NICOLE FELL
Physical Therapist
4660 YOSEMITE ST STE 200
DENVER, CO 80238
Denver County (303) 860-5244
DR. HOLLIND SKYE ENGLERT DC
Chiropractor
4660 YOSEMITE ST STE 200
DENVER, CO 80238
Denver County (720) 749-5599
KELSEY POGATETZ
Physician Assistant
4660 YOSEMITE ST STE 200
DENVER, CO 80238
Denver County (303) 860-5244
MR. WILLIAM JOSEPH FERGUSON LAC
Acupuncturist
4660 YOSEMITE ST STE 200
DENVER, CO 80238
Denver County (303) 860-5244

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 Calla Lopez's NPI number?

The NPI number for Calla Lopez is 1861298911. It was assigned to this individual provider in the NPPES registry on February 20, 2025.

Where is Calla Lopez located?

Calla Lopez practices at 4660 Yosemite St Ste 200, Denver, CO 80238. The listed phone number is (303) 860-5244.

What is Calla Lopez's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Calla Lopez enrolled in Medicare?

Yes. Calla Lopez 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.

Which organization bills Medicare for Calla Lopez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Calla Lopez reassigns Medicare benefits to Mountain View Pain Specialists (Lone Tree, CO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Calla Lopez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Calla Lopez was last updated on May 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.