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ANNA THERESA KOESTER FNP-BC
NPI 1306627989
Nurse Practitioner in Surprise, AZ

Active since October 10, 2023PECOS EnrolledAccepts Medicare Assignment
14800 W MOUNTAIN VIEW BLVD STE 160, SURPRISE, AZ 85374(623) 584-3376(623) 584-3375 Get Directions Write a Review

NPPES record last updated: January 24, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Anna Theresa Koester Fnp-bc NPPES

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

ANNA THERESA KOESTER FNP-BC (NPI 1306627989) is an individual nurse practitioner in Surprise, Arizona, licensed in Arizona (308311) and active in the NPI registry since October 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1306627989
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameANNA THERESA KOESTERCredential: FNP-BC
Location Address14800 W MOUNTAIN VIEW BLVD STE 160Surprise, AZ 85374-2700
Mailing Address14800 W Mountain View Blvd Ste 160Surprise, AZ 85374-2700 · (623) 584-3376 · Fax (623) 584-3375
Phone(623) 584-3376
Fax(623) 584-3375
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateOctober 10, 2023
Last NPPES UpdateJanuary 24, 2025
NPPES CertifiedJanuary 24, 2025
✔ NPI 1306627989 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 AZ · 308311
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.
14800 W MOUNTAIN VIEW BLVD STE 160, Surprise, AZ 85374
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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

Anna Theresa Koester Fnp-bc 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 ID8729509955
PECOS Enrollment IDI20250304004006
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 Anna Koester reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Arizona Dermatology Specialists, PLLC
Same address
Dermatology
14800 W. MOUNTAIN VIEW BLVD., STE. 160
Surprise, AZ 85374
  • Reassigned Medicare billing, Arizona enrollment
  • 8 clinicians in this Medicare group
NPI 1992061162 (623) 584-3376

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 85374 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
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

JILLIAN BRYNN GOLDNEY FNP-C, DCNP
Nurse Practitioner
14800 W MOUNTAIN VIEW BLVD STE 160
SURPRISE, AZ 85374
Maricopa County (623) 584-3376
ELIZABETH V VESSELOVSKAYA PA-C
Physician Assistant
14800 W MOUNTAIN VIEW BLVD STE 160
SURPRISE, AZ 85374
Maricopa County (623) 584-3376
VICTORIA PHAN
Physician Assistant (Medical)
14800 W MOUNTAIN VIEW BLVD STE 160
SURPRISE, AZ 85374
Maricopa County (623) 584-3376
HAVILAH CHELSEA DODD PA-C
Physician Assistant
14800 W MOUNTAIN VIEW BLVD STE 160
SURPRISE, AZ 85374
Maricopa County (623) 584-3376
DR. DREW AUBREY REESE D.O.
Dermatology
14800 W MOUNTAIN VIEW BLVD STE 160
SURPRISE, AZ 85374
Maricopa County (623) 584-3376
DR. JAMES ORSON BARLOW M.D.
Dermatology (MOHS-Micrographic Surgery)
14800 W MOUNTAIN VIEW BLVD STE 160
SURPRISE, AZ 85374
Maricopa County (623) 584-3376

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 Anna Koester's NPI number?

The NPI number for Anna Koester is 1306627989. It was assigned to this individual provider in the NPPES registry on October 10, 2023.

Where is Anna Koester located?

Anna Koester practices at 14800 W Mountain View Blvd Ste 160, Surprise, AZ 85374. The listed phone number is (623) 584-3376.

What is Anna Koester's specialty?

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

Is Anna Koester enrolled in Medicare?

Yes. Anna Koester 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 Anna Koester's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Koester reassigns Medicare benefits to Arizona Dermatology Specialists, PLLC (Surprise, AZ). 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 Anna Koester'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 Anna Koester was last updated on January 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 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.