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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ZACHARY E. PFLUM M.D.
NPI 1225416662
Otolaryngology in Greenfield, WI

Active since May 18, 2015PECOS EnrolledAccepts Medicare Assignment
4600 W LOOMIS RD, GREENFIELD, WI 53220(414) 218-4466 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 30, 2021, Jul 7, 2021, Jan 27, 2021 and 1 more (4 updates tracked since 2020).

About Dr. Zachary E. Pflum M.d. NPPES

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

DR. ZACHARY E. PFLUM M.D. (NPI 1225416662) is an individual otolaryngology provider in Greenfield, Wisconsin, licensed in Wisconsin (73408-20) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS, is affiliated with Aurora St Lukes Medical Center, and maintains a secondary practice location in Little Chute.

NPPES Registry Identity

NPI1225416662
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameDR. ZACHARY E. PFLUMCredential: M.D.
Location Address4600 W LOOMIS RDGreenfield, WI 53220-4858
Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 326-2250
Phone(414) 218-4466
Sole ProprietorNo
Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 2015
Enumeration DateMay 18, 2015
Last NPPES UpdateJune 11, 20264 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1225416662 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in WI · 73408-20
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
4600 W LOOMIS RD, Greenfield, WI 53220
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Secondary Practice Location 1

Location 11221 Dotty DrLittle Chute, WI 54140-2366 · Phone (920) 213-5981

Other Identifiers 1

Medicaid100100061WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Zachary E. Pflum M.d. 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 ID3274844626
PECOS Enrollment IDI20200624000236
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.

Areas of Expertise CMS Part B claims 9

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
140 services92 patients
Diagnostic exam of voice box using a flexible endoscope 31575
This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.
64 services41 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
50 services41 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
42 services42 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
36 services29 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
35 services35 patients

Hospital Affiliations CMS Care Compare 4

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

Aurora St Lukes Medical Center

Acute Care Hospitals · Milwaukee, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520138
Location2900 W Oklahoma AveMilwaukee, WI 53215 · Milwaukee County
Emergency services Birthing friendly

West Allis Memorial Hospital

Acute Care Hospitals · West Allis, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520139
Location8901 W Lincoln AveWest Allis, WI 53227 · Milwaukee County
Emergency services Birthing friendly

Aurora Medical Center - Summit

Acute Care Hospitals · Summit, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520206
Location36500 Aurora DriveSummit, WI 53066 · Waukesha County
Emergency services Birthing friendly

Aurora Medical Center

Acute Care Hospitals · Grafton, WI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520207
Location975 Port Washington RoadGrafton, WI 53024 · Ozaukee County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53220 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
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
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.

WENDY M PIETZ, DDS, SC
Dentist (Oral and Maxillofacial Surgery)
4600 W LOOMIS RD, SUITE 220
GREENFIELD, WI 53220
Milwaukee County (414) 281-1881
KATHLEEN J KRICKEBERG NP
Nurse Practitioner
4600 W LOOMIS RD
GREENFIELD, WI 53220
Milwaukee County (414) 281-4466
MICHAEL R NORDSTROM MD
Otolaryngology
4600 W LOOMIS RD, SUITE 201
GREENFIELD, WI 53220
Milwaukee County (414) 281-4466
DR. KONRAD WALTER KRAWCZYK M.D.
Family Medicine
4600 W LOOMIS RD, SUITE 130
GREENFIELD, WI 53220
Milwaukee County (414) 389-4900
ALEXANDRA PANKOWSKI
Behavior Technician
4600 W LOOMIS RD
GREENFIELD, WI 53220
Milwaukee County (833) 646-3222
REHABCLINICS GALAXY INC
Clinic/Center (Physical Therapy)
4600 W LOOMIS RD, SUITE 120
GREENFIELD, WI 53220
Milwaukee County (414) 281-7247
JAMES R BARTON MD
Otolaryngology
4600 W LOOMIS RD, SUITE 201
GREENFIELD, WI 53220
Milwaukee County (414) 281-4466
DONALD DAVID NIMMER M.D.
Family Medicine
4600 W LOOMIS RD, SUITE 130
GREENFIELD, WI 53220
Milwaukee County (414) 389-4900

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 Zachary Pflum's NPI number?

The NPI number for Zachary Pflum is 1225416662. It was assigned to this individual provider in the NPPES registry on May 18, 2015.

Where is Zachary Pflum located?

Zachary Pflum practices at 4600 W Loomis Rd, Greenfield, WI 53220. The listed phone number is (414) 218-4466.

What is Zachary Pflum's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Zachary Pflum enrolled in Medicare?

Yes. Zachary Pflum 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.

What insurance does Zachary Pflum accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Quartz and 1 other insurer list Zachary Pflum 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 Zachary Pflum affiliated with any hospitals?

According to CMS data, Zachary Pflum is affiliated with Aurora St Lukes Medical Center, West Allis Memorial Hospital, Aurora Medical Center - Summit and Aurora Medical Center.

When was this NPI record last updated?

The NPPES record for Zachary Pflum was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 59 days 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.