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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. IRENE W MACHARIA M.D.
NPI 1881868859
Internal Medicine in Denver, CO

Active since April 21, 2008PECOS Enrolled
10350 E DAKOTA AVE, DENVER, CO 80247(303) 338-4545 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 14, 2026, Jun 14, 2021 (2 updates tracked since 2021).

About Dr. Irene W Macharia M.d. NPPES

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

DR. IRENE W MACHARIA M.D. (NPI 1881868859) is an individual internal medicine provider in Denver, Colorado, licensed in Colorado (49712) and active in the NPI registry since April 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881868859
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. IRENE W MACHARIACredential: M.D.
Location Address10350 E DAKOTA AVEDenver, CO 80247-1314
Mailing Address10350 E Dakota AveDenver, CO 80247-1314
Phone(303) 338-4545
Sole ProprietorNo
Enumeration DateApril 21, 2008
Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
✔ NPI 1881868859 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in CO · 49712✔ Licensed in WA · MD00049035
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.
10350 E DAKOTA AVE, Denver, CO 80247
Open in Google Maps ↗

Other Identifiers 2

Medicaid39801829CO
Other021712CO · Kaiser Commercial Number

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. Irene W Macharia M.d. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80247 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.

LAUREN ELIZABETH HILLARY PA-C
Physician Assistant
10350 E DAKOTA AVE
DENVER, CO 80247
Denver County (303) 338-4545
DR. LISA D WHITESIDES MD
Pediatrics
10350 E DAKOTA AVE
DENVER, CO 80247
Denver County (303) 338-4545
MARJORIE E COOKE-BARTSCH
Registered Nurse (Psychiatric/Mental Health)
10350 E DAKOTA AVE
DENVER, CO 80247
Denver County (303) 344-7283
DR. JOHN PAUL WILKINS MD
Internal Medicine (Sleep Medicine)
10350 E DAKOTA AVE
DENVER, CO 80247
Denver County (303) 338-4545
MARCI J HOLSTEGE NP
Nurse Practitioner
10350 E DAKOTA AVE, STE B
DENVER, CO 80247
Denver County (303) 338-4545
DR. LORI GREENE MD
Psychiatry & Neurology (Psychiatry)
10350 E DAKOTA AVE
DENVER, CO 80247
Denver County (303) 338-3800
PATRICIA E WENDLE LCSW
Social Worker (Clinical)
10350 E DAKOTA AVE, SUITE B
DENVER, CO 80247
Denver County (303) 338-4545
ANNE E READ NP
Nurse Practitioner (Family)
10350 E DAKOTA AVE
DENVER, CO 80247
Denver County (303) 338-4545

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 Irene Macharia's NPI number?

The NPI number for Irene Macharia is 1881868859. It was assigned to this individual provider in the NPPES registry on April 21, 2008.

Where is Irene Macharia located?

Irene Macharia practices at 10350 E Dakota Ave, Denver, CO 80247. The listed phone number is (303) 338-4545.

What is Irene Macharia's specialty?

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

Is Irene Macharia enrolled in Medicare?

Yes. Irene Macharia is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Irene Macharia was last updated on July 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 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.