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AARON M PFALZER MD
NPI 1427004118
Emergency Medicine in Buffalo, NY

Active since May 25, 2006PECOS Enrolled
100 HIGH ST, BUFFALO, NY 14203(716) 691-8838(716) 564-1134 Get Directions Write a Review

NPPES record last updated: August 20, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Aaron M Pfalzer Md NPPES

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

AARON M PFALZER MD (NPI 1427004118) is an individual emergency medicine provider in Buffalo, New York, licensed in New York (227608) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1427004118
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameAARON M PFALZERCredential: MD
Location Address100 HIGH STBuffalo, NY 14203
Mailing Address6 Fountain PlzBuffalo, NY 14202-2211 · (716) 580-1813
Phone(716) 691-8838
Fax(716) 564-1134
Sole ProprietorNo
Enumeration DateMay 25, 2006
Last NPPES UpdateAugust 20, 2014
✔ NPI 1427004118 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in NY · 227608
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.
100 HIGH ST, Buffalo, NY 14203
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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 (PECOS)

Aaron M Pfalzer Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Aaron Pfalzer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Emergency Medical Services Inc.
2.5 mi
Emergency Medicine
462 GRIDER ST
Buffalo, NY 14215
  • Reassigned Medicare billing, New York enrollment
  • 194 clinicians in this Medicare group
NPI 1972540482 (716) 389-3271

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 4

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.
52 services52 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.
45 services39 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.
31 services30 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.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14203 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
$84.93 typical visit price
range $54.87 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
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 20

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

MS. DENISE MARIE DONAHUE NURSE PRACTITIONER
Nurse Practitioner
100 HIGH ST
BUFFALO, NY 14203
Erie County (716) 859-5600
GENERAL PHYSICIAN SUB II PLLC
Specialist
100 HIGH ST, RM C421
BUFFALO, NY 14203
Erie County (716) 859-7607
DR. MATTHEW KYLE MOSER MD
Student in an Organized Health Care Education/Training Program
100 HIGH ST
BUFFALO, NY 14203
Erie County (716) 218-1000
MIAN MOHAMMAD HAMMAS MD
Hospitalist
100 HIGH ST
BUFFALO, NY 14203
Erie County (716) 859-5600
DR. GUY SHEMESH DUNETZ MD
Student in an Organized Health Care Education/Training Program
100 HIGH ST
BUFFALO, NY 14203
Erie County (716) 859-5600
JILL FRASCO DO
Student in an Organized Health Care Education/Training Program
100 HIGH ST
BUFFALO, NY 14203
Erie County (716) 859-5600
THOMAS WILLIAM JORDAN D.O.
Emergency Medicine
100 HIGH ST
BUFFALO, NY 14203
Erie County (716) 859-1993
KIM HUBER
Registered Nurse (Registered Nurse First Assistant)
100 HIGH ST
BUFFALO, NY 14203
Erie County (716) 859-2741

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 Pfalzer's NPI number?

The NPI number for Aaron Pfalzer is 1427004118. It was assigned to this individual provider in the NPPES registry on May 25, 2006.

Where is Aaron Pfalzer located?

Aaron Pfalzer practices at 100 High St, Buffalo, NY 14203. The listed phone number is (716) 691-8838.

What is Aaron Pfalzer's specialty?

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

Is Aaron Pfalzer enrolled in Medicare?

Yes. Aaron Pfalzer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Aaron Pfalzer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Pfalzer reassigns Medicare benefits to University Emergency Medical Services Inc. (Buffalo, NY). 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 Aaron Pfalzer'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 Aaron Pfalzer was last updated on August 20, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.