1. Home
  2. Directory
  3. Colorado
  4. Denver
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MACKENZIE LEIGH WHITESELL GARCIA MD
NPI 1104402080
Internal Medicine in Denver, CO

Active since March 22, 2021PECOS Enrolled
301 W 6TH AVE, DENVER, CO 80204(303) 436-6000 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 6, 2026, Jul 1, 2025, Mar 22, 2021 (3 updates tracked since 2021).

About Dr. Mackenzie Leigh Whitesell Garcia Md NPPES

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

DR. MACKENZIE LEIGH WHITESELL GARCIA MD (NPI 1104402080) is an individual internal medicine provider in Denver, Colorado, licensed in Colorado (DR.0075015) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1104402080
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. MACKENZIE LEIGH WHITESELL GARCIACredential: MD
Location Address301 W 6TH AVEDenver, CO 80204-5182
Mailing Address301 W 6th AveDenver, CO 80204-5182 · (303) 436-6000
Phone(303) 436-6000
Sole ProprietorNo
Enumeration DateMarch 22, 2021
Last NPPES UpdateJuly 6, 20263 updates tracked since enumeration
NPPES CertifiedJuly 6, 2026
✔ NPI 1104402080 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CO · DR.0075015
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
301 W 6TH AVE, Denver, CO 80204
Open in Google Maps ↗

Other Names 1

Former Name (1)Mackenzie Whitesell

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of Alabama 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 (PECOS)

Dr. Mackenzie Leigh Whitesell Garcia 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.

Areas of Expertise CMS Part B claims 2

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.
14 services13 patients
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.
13 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80204 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
$132.55 typical visit price
range $58.06 – $174.82
Typical copayment $33.13 (range $14.51 – $43.70)
Most-billed visit code 99204
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
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.

JOANNA KEANE MA
Student in an Organized Health Care Education/Training Program
301 W 6TH AVE
DENVER, CO 80204
Denver County (303) 602-4851
DR. POUYAN SHAHROKH D.M.D.
Dentist (General Practice)
301 W 6TH AVE, MC0242
DENVER, CO 80204
Denver County (303) 602-8241
DR. CHELSEA VRANEY DDS
Student in an Organized Health Care Education/Training Program
301 W 6TH AVE
DENVER, CO 80204
Denver County (303) 436-6000
KEVIN PATRICK BOGART PA-C
Physician Assistant (Medical)
301 W 6TH AVE, FAMILY AND INTERNAL MEDICINE CLINIC MC3250
DENVER, CO 80204
Denver County (303) 602-8070
JACOB BRIGHAM SORBER D.D.S.
Student in an Organized Health Care Education/Training Program
301 W 6TH AVE
DENVER, CO 80204
Denver County (303) 436-6000
MRS. KIMBERLY ANN SYLVESTER NP
Nurse Practitioner (Pediatrics)
301 W 6TH AVE
DENVER, CO 80204
Denver County (303) 602-8340
JENNIFER K ESS MD
Pediatrics
301 W 6TH AVE
DENVER, CO 80204
Denver County (303) 436-6000
HANNAH SKIEST MSCP
Student in an Organized Health Care Education/Training Program
301 W 6TH AVE
DENVER, CO 80204
Denver County (303) 602-4848

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 Garcia's NPI number?

The NPI number for Mackenzie Garcia is 1104402080. It was assigned to this individual provider in the NPPES registry on March 22, 2021. The provider is also known as Mackenzie Whitesell.

Where is Mackenzie Garcia located?

Mackenzie Garcia practices at 301 W 6th Ave, Denver, CO 80204. The listed phone number is (303) 436-6000.

What is Mackenzie Garcia's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mackenzie Garcia enrolled in Medicare?

Yes. Mackenzie Garcia is registered in the Medicare PECOS enrollment system.

What insurance does Mackenzie Garcia accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee list Mackenzie Garcia 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.

When was this NPI record last updated?

The NPPES record for Mackenzie Garcia was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 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.