Hillary Day Lum, M.D., PH.D.

Geriatric Medicine Internal Medicine

Internal Medicine

Hillary Day Lum is a Geriatric Medicine Internal Medicine specialist based in Aurora, CO with over 18 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

Also practices: INTERNAL MEDICINE

(720) 848-0000Aurora, CO
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Hillary Day Lum, M.D., PH.D. practices as part of a group geriatrician practice in Aurora, CO. Trained at University of Wisconsin School of Medicine (class of 2008), she has been practicing for over 18 years. CMS Medicare data shows her patients commonly have hypertension, high cholesterol, and arthritis.

At a glance

  • Prescribes opioids less than 53% of reporting doctors in Colorado
  • Virtual visits available — no app or travel required
1 of 20 Internal Medicine providers in COSee all Internal Medicine in Aurora18+ years experienceNPI since 2008

Older · 4311dNPPES updated 2014-08-06 · verify NPI on CMS · Verify license at Colorado Medical Board

Contact & Location

Practice Location

12605 E 16th Ave, Aurora, CO 80045-2545

CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor prescribes opioid pain medications conservatively.

Opioid Rx

↓ Lower = better

1%

Colorado avg: 6.1 · US avg: 5.1

Higher than most doctors nationally(-4.1 pts)

Typical range among reporting doctors in Colorado

1% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Medicare Patients

67

Unique beneficiaries

Standard volume

Prescription Recipients

75

Patients prescribed

Prescriptions Written

1,104

Total claims

Total Medicare drug cost: $137k

Percentile rankings compared against 1,617 reporting peers in Colorado.

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.

Hypertension
Higher than avg (+5%)75%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↑ More patients than average (+5%) — a focus area for this doctor

High Cholesterol
Lower than avg (-9%)61%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↓ Fewer patients than average (-9%) — less common here

Arthritis
Higher than avg (+5%)54%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↑ More patients than average (+5%) — a focus area for this doctor

Chronic Kidney Disease
Higher than avg (+13%)43%

Gradual loss of kidney function over time, often linked to diabetes or hypertension

US avg: 29.6%

↑ More patients than average (+13%) — a focus area for this doctor

Alzheimer's / Dementia
39%

Progressive brain disorders causing memory loss and cognitive decline

Mood Disorders
37%

Conditions affecting emotional state, including depression and bipolar disorder

Bipolar Disorder
36%

A condition with extreme mood swings between emotional highs and lows

Depression
Higher than avg (+2%)34%

A mood disorder causing persistent sadness and loss of interest in activities

US avg: 31.8%

↑ More patients than average (+2%) — a focus area for this doctor

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Graduated medical school · 2008

    University of Wisconsin School of Medicine and Public Health

  2. 18 years in practice

    Experienced

Internal MedicineGeriatric Medicine in AuroraAllopathic & Osteopathic Physicians

Geriatricians specialize in healthcare for older adults, managing multiple chronic conditions, medication interactions, cognitive decline, falls prevention, and end-of-life care planning.

Taxonomy: 207RG0300X

Education & Training

University of Wisconsin School of Medicine (Class of 2008)

Practice Footprint

Mailing address

Po Box 110429, Aurora, CO 80042-0429

Differs from practice location

Primary hospital affiliation: Acute Care Hospitals

CMS Certification Number: 390334

View hospital on Medicare Care Compare

Virtual Geriatric Medicine Care With Hillary Day Lum

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Hillary Day Lum for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Aurora required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about Hillary Day Lum

Dr. Lum is listed as active in the NPI registry with telehealth listed in Aurora, CO. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (720) 848-0000.

Verified across 4 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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