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TWELFTH ONE, LLC
NPI 1457872632
Pharmacy - Home Infusion Therapy Pharmacy in Chandler, AZ

Active since June 28, 2017
2227 W PECOS RD STE 12, CHANDLER, AZ 85224(602) 618-1313(602) 801-2291 Get Directions Write a Review

NPPES record last updated: August 20, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 21, 2022, Jun 21, 2021, Oct 8, 2020 and 1 more (4 updates tracked since 2017).

About Twelfth One, Llc NPPES

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

TWELFTH ONE, LLC (NPI 1457872632), doing business as Aspen Infusion, is a healthcare organization registered as a home infusion therapy pharmacy in Chandler, Arizona and active in the NPI registry since June 2017. The organization lists Thomas K Maiefski, Manager/member, as its authorized official.

NPPES Registry Identity

NPI1457872632
Entity TypeOrganization
Primary Taxonomy3336H0001X
Legal Business NameTWELFTH ONE, LLC
Location Address2227 W PECOS RD STE 12Chandler, AZ 85224-4866
Mailing AddressPo Box 248819Oklahoma City, OK 73124-8819 · (480) 739-6040 · Fax (480) 739-6072
Phone(602) 618-1313
Fax(602) 801-2291
Organization SubpartNo
Authorized OfficialThomas K MaiefskiManager/member · (602) 618-1313
Enumeration DateJune 28, 2017
Last NPPES UpdateAugust 20, 20254 updates tracked since enumeration
NPPES CertifiedAugust 20, 2025
✔ NPI 1457872632 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 7

★ Primary SpecialtyPharmacy · Home Infusion Therapy PharmacySuppliers
Taxonomy Code3336H0001X
License✔ Licensed in AZ · Y007272
Definition

Pharmacy-based, decentralized patient care organization with expertise in USP 797-compliant sterile drug compounding that provides care to patients with acute or chronic conditions generally pertaining to parenteral administration of drugs, biologics and nutritional formulae administered through catheters and/or needles in home and alternate sites. Extensive professional pharmacy services, care coordination, infusion nursing services, supplies and equipment are provided to optimize efficacy and compliance.

Also ListedHome InfusionTaxonomy 251F00000X
Also ListedDurable Medical Equipment & Medical Supplies · Parenteral & Enteral NutritionTaxonomy 332BP3500X
Also ListedPharmacyTaxonomy 333600000X
Also ListedPharmacy · Community/Retail PharmacyTaxonomy 3336C0003X
Also ListedPharmacy · Compounding PharmacyTaxonomy 3336C0004X
Also ListedPharmacy · Specialty PharmacyTaxonomy 3336S0011X
2227 W PECOS RD STE 12, Chandler, AZ 85224
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Other Names 1

Doing Business AsAspen Infusion

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter from Arizona Complete Health and more.Insurance ›

Medical Equipment Supplier Medicare DMEPOS 8

Medicare supplier enrollment and the product categories Aspen Infusion carries, from the Medicare DMEPOS supplier directory.

Aspen Infusion

DMEPOS supplier · Chandler, AZOperated by Twelfth One, LLC
⋮

Does not accept Medicare assignment

Aspen Infusion has not agreed to accept the Medicare-approved amount as full payment for covered equipment and supplies. Medicare patients may be charged more than the Medicare-approved amount; confirm the expected cost with the supplier before ordering.

PTAN (Medicare Supplier Number)20457545
Medicare Participant SinceDecember 8, 2017
Supplier Location2227 W Pecos Rd Ste 12Chandler, AZ 85224
Phone(480) 739-6040
Supplier Specialties
Pharmacy

Medicare Product Categories

Epoetin
Epoetin is a man-made version of human erythropoietin (EPO)
Immunosuppressive Drugs
Immunosuppressive drugs require dosage, frequency, and route of administration to prevent or treat the rejection of an organ transplant
Infusion Drugs
External Infusion Pumps and/or Supplies
An infusion pump is necessary to safely administer the drug
Enteral Nutrients
Enteral formula
Enteral Equipment and/or Supplies
Enteral infusion pumps, enteral nutrition supply kits
Product categories are from the Medicare DMEPOS supplier directory. Contact the supplier to confirm current availability of specific items.

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 Twelfth One, LLC's NPI number?

The NPI number for Twelfth One, LLC is 1457872632. It was assigned to this organization in the NPPES registry on June 28, 2017. The provider is doing business as Aspen Infusion.

Where is Twelfth One, LLC located?

Twelfth One, LLC is located at 2227 W Pecos Rd Ste 12, Chandler, AZ 85224. The listed phone number is (602) 618-1313.

What is Twelfth One, LLC's specialty?

The primary specialty registered for this NPI is Pharmacy, specializing in Home Infusion Therapy Pharmacy, with taxonomy code 3336H0001X.

Does Twelfth One, LLC accept Medicare assignment for medical equipment?

No. As a Medicare medical equipment supplier, Aspen Infusion does not accept Medicare assignment for equipment and supplies, so patients may be charged more than the Medicare-approved amount. Confirm the expected cost with the supplier before ordering.

What insurance does Twelfth One, LLC accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arizona Complete Health and 43 other insurers list Twelfth One, LLC 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 Twelfth One, LLC was last updated on August 20, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.