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DR. MACKENZIE DAVID HAY M.D.
NPI 1407010358
Emergency Medicine in Knoxville, TN

Active since July 10, 2008PECOS EnrolledAccepts Medicare Assignment
78.75/100
CMS Quality Rating
900 E OAK HILL AVE, KNOXVILLE, TN 37917(865) 545-7573 Get Directions Write a Review

NPPES record last updated: May 10, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Mackenzie David Hay M.d. NPPES

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

DR. MACKENZIE DAVID HAY M.D. (NPI 1407010358) is an individual emergency medicine provider in Knoxville, Tennessee, licensed in Tennessee (46388) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2006).

NPPES Registry Identity

NPI1407010358
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. MACKENZIE DAVID HAYCredential: M.D.
Location Address900 E OAK HILL AVEKnoxville, TN 37917-4505
Mailing Address1604 Legacy Park RdKnoxville, TN 37922-6030 · (815) 262-2698
Phone(865) 545-7573
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2006
Enumeration DateJuly 10, 2008
Last NPPES UpdateMay 10, 2013
✔ NPI 1407010358 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in TN · 46388
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 ListedFamily MedicineTaxonomy 207Q00000X · License 46388 (TN)
900 E OAK HILL AVE, Knoxville, TN 37917
Open in Google Maps ↗

Other Identifiers 1

Other1073274056TN · Abfm

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. Mackenzie David Hay 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 ID345413183
PECOS Enrollment IDI20150828000265
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 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.
498 services477 patients
X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
149 services149 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.
117 services115 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.
42 services42 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37917 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
$81.53 typical visit price
range $52.64 – $160.89
Typical copayment $20.38 (range $13.16 – $40.22)
Most-billed visit code 99203
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
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.

78.75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality75
Improvement Activities40

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.

METRO KNOXVILLE HMA, LLC
Rehabilitation Unit
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-7793
METRO KNOXVILLE HMA, LLC
Pharmacy
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-8905
TINA ELAINE DOTY NP
Nurse Practitioner
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-7573
MS. TERESA LYNN MCCUSKER RD, LDN
Dietitian, Registered
900 E OAK HILL AVE, NUTRITIONAL SERVICES DEPARTMENT
KNOXVILLE, TN 37917
Knox County (865) 545-7610
MR. CHARLES RAY TANNER P.A.-C.
Physician Assistant
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-8000
MARK HOWARD P.A.
Physician Assistant
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 539-8018
SARAH ELIZABETH GREENWAY
Nurse Anesthetist, Certified Registered
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 331-2278
DR. JOHN BRUCE IRWIN M.D.
Emergency Medicine
900 E OAK HILL AVE
KNOXVILLE, TN 37917
Knox County (865) 545-8000

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 Mackenzie Hay's NPI number?

The NPI number for Mackenzie Hay is 1407010358. It was assigned to this individual provider in the NPPES registry on July 10, 2008.

Where is Mackenzie Hay located?

Mackenzie Hay practices at 900 E Oak Hill Ave, Knoxville, TN 37917. The listed phone number is (865) 545-7573.

What is Mackenzie Hay's specialty?

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

Is Mackenzie Hay enrolled in Medicare?

Yes. Mackenzie Hay 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.

When was this NPI record last updated?

The NPPES record for Mackenzie Hay was last updated on May 10, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.