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AARON PFEIFER MD
NPI 1275912651
Emergency Medicine in Hays, KS

Active since May 19, 2015PECOS EnrolledAccepts Medicare Assignment
85.73/100
CMS Quality Rating
2220 CANTERBURY DR, HAYS, KS 67601(785) 623-5555(785) 623-5518 Get Directions Write a Review

NPPES record last updated: June 14, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Aaron Pfeifer Md NPPES

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

AARON PFEIFER MD (NPI 1275912651) is an individual emergency medicine provider in Hays, Kansas, licensed in Kansas (0440949) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS, is affiliated with Hays Medical Center, and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (2015).

NPPES Registry Identity

NPI1275912651
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameAARON PFEIFERCredential: MD
Location Address2220 CANTERBURY DRHays, KS 67601
Mailing Address2220 Canterbury DrHays, KS 67601-2370 · (785) 623-5555 · Fax (785) 623-5518
Phone(785) 623-5555
Fax(785) 623-5518
Sole ProprietorNo
Medical School CMSUniversity Of Kansas School Of Med (kc/wich/sal)Graduated 2015
Enumeration DateMay 19, 2015
Last NPPES UpdateJune 14, 2018
✔ NPI 1275912651 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in KS · 0440949✔ Licensed in MI · 4301107428
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 4301107428 (MI)
2220 CANTERBURY DR, Hays, KS 67601
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Sunflower Health Plan, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

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

Aaron Pfeifer Md 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 ID4385959576
PECOS Enrollment IDI20180619002411
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 Reassignments

2

Medicare enrollment records show Aaron Pfeifer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hays Medical Center, Inc
Same address
Anatomic Pathology & Clinical Pathology
2220 CANTERBURY DR
Hays, KS 67601
  • Reassigned Medicare billing, Kansas enrollment
  • 218 clinicians in this Medicare group
NPI 1073306221 (785) 650-2700
Pawnee Valley Community Hospital, Inc.
49 mi
Specialist
923 CARROLL AVE
Larned, KS 67550
  • Reassigned Medicare billing, Kansas enrollment
  • Also billed through NPI 1568401206 (Kansas)
  • 23 clinicians in this Medicare group
NPI 1467569442 (620) 285-3161

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

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
469 services421 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
304 services271 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
106 services95 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
57 services56 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
44 services43 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hays Medical Center

Acute Care Hospitals · Hays, KS
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number170013
Location2220 Canterbury DriveHays, KS 67601 · Ellis County
Emergency services Birthing friendly

Pawnee Valley Community Hospital

Critical Access Hospitals · Larned, KS
OwnershipVoluntary non-profit - Private
CMS Certification Number171345
Location923 Carroll AvenueLarned, KS 67550 · Pawnee County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 67601 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
$81.98 typical visit price
range $53.00 – $161.67
Typical copayment $20.49 (range $13.25 – $40.41)
Most-billed visit code 99203
Established Patient
$94.12 typical visit price
range $16.88 – $132.11
Typical copayment $23.53 (range $4.22 – $33.02)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.73/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality99.31
Improvement Activities0
Cost86.69

Other Providers at the Same Location NPPES 20

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

DR. JANE DAUGHERTY-LUCK DO
Emergency Medicine
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 623-5555
LABONE LLC
Clinical Medical Laboratory
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 650-2700
ROBERT A PHILLIPS JR. M.D, MBA, FACS
Thoracic Surgery (Cardiothoracic Vascular Surgery)
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 625-4699
ANISSA L. SONNTAG APRN
Nurse Practitioner (Family)
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 623-5591
DAVID H SAVAGE MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 625-4699
EDGARDO OLVERA LOPEZ MD
Hospitalist
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 623-5591
HAYS MEDICAL CENTER, INC
Pathology (Anatomic Pathology & Clinical Pathology)
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 650-2700
RADIOLOGY ASSOCIATES OF HAYS, P.A.
Radiology (Diagnostic Radiology)
2220 CANTERBURY DR
HAYS, KS 67601
Ellis County (785) 625-6521

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 Aaron Pfeifer's NPI number?

The NPI number for Aaron Pfeifer is 1275912651. It was assigned to this individual provider in the NPPES registry on May 19, 2015.

Where is Aaron Pfeifer located?

Aaron Pfeifer practices at 2220 Canterbury Dr, Hays, KS 67601. The listed phone number is (785) 623-5555.

What is Aaron Pfeifer's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Aaron Pfeifer enrolled in Medicare?

Yes. Aaron Pfeifer 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 organizations bill Medicare for Aaron Pfeifer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Pfeifer reassigns Medicare benefits to 2 organizations: Hays Medical Center, Inc (Hays, KS) and Pawnee Valley Community Hospital, Inc. (Larned, KS). Each 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 Aaron Pfeifer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Aaron Pfeifer accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Sunflower Health Plan, Ambetter of Oklahoma and Blue Cross and Blue Shield of Kansas, Inc. list Aaron Pfeifer 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.

Is Aaron Pfeifer affiliated with any hospitals?

According to CMS data, Aaron Pfeifer is affiliated with Hays Medical Center and Pawnee Valley Community Hospital.

When was this NPI record last updated?

The NPPES record for Aaron Pfeifer was last updated on June 14, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.