Theresa Louise Mortensen, N.P.

Nurse Practitioner

Theresa Louise Mortensen is a Nurse Practitioner based in Santa Rosa, CA with over 24 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(707) 528-1050Santa Rosa, CA
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Patients across CA can see Theresa Louise Mortensen, N.P. in person in Santa Rosa or via virtual visit — no travel required. With 24+ years of experience, she has been practicing in the Santa Rosa area. CMS Medicare data shows her patients commonly have hypertension, high cholesterol, and cancer.

At a glance

  • Prescribes opioids less than 21% of reporting doctors in California
  • Virtual visits available — no app or travel required
1 of 1,057 Nurse Practitioner providers in CASee all Nurse Practitioner in Santa Rosa24+ years experienceNPI since 2006

Older · 1657dNPPES updated 2021-11-08 · verify NPI on CMS · Verify license at Medical Board of California

Contact & Location

Practice Location

3555 Round Barn Cir, Santa Rosa, CA 95403-1757

Fax: (707) 525-3874
CMS Clinical Data

How Does This Doctor Compare?

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

Opioid Rx

↓ Lower = better

4.79%

California avg: 5.2 · US avg: 5.1

Higher than most doctors nationally(-0.3 pts)

4.79% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Medicare Patients

77

Unique beneficiaries

Standard volume

Prescription Recipients

293

Patients prescribed

Prescriptions Written

689

Total claims

Total Medicare drug cost: $351k

Percentile rankings compared against 9,360 reporting peers in California.

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 Cancer.

Hypertension
Higher than avg (+3%)73%

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

US avg: 70.2%

↑ More patients than average (+3%) — a focus area for this doctor

High Cholesterol
Lower than avg (-1%)69%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↓ Fewer patients than average (-1%) — less common here

Cancer
Higher than avg (+30%)51%

Diseases involving abnormal cell growth with potential to spread to other body parts

US avg: 20.8%

↑ More patients than average (+30%) — a focus area for this doctor

Diabetes
Higher than avg (+2%)36%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

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

Arthritis
Lower than avg (-15%)34%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↓ Fewer patients than average (-15%) — less common here

Ischemic Heart Disease
32%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

US avg: 31.7%
Chronic Kidney Disease
30%

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

US avg: 29.6%
Atrial Fibrillation
22%

An irregular, often rapid heartbeat that increases the risk of stroke

US avg: 22%
GeneralBehavioralNational avg

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

Industry Payment Transparency

$974 received from industry

29 transactions reported in 2024 ·Moderate tier

View on CMS Open Payments →

Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.

Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Theresa Louise Mortensen's NPI.

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Background & Specialty

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

Career Journey
  1. Board certified · Nov 7, 2021

    Self-reported via NPPES

  2. 24 years in practice

    Experienced

Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Taxonomy: 363L00000X

Practice Footprint

Primary hospital affiliation: Acute Care Hospitals

CMS Certification Number: 190111

View hospital on Medicare Care Compare

Virtual Nursing Care With Theresa Louise Mortensen

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

Schedule a virtual visit with Theresa Louise Mortensen for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Santa Rosa 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 Theresa Louise Mortensen

Dr. Mortensen is listed as active in the NPI registry with telehealth listed in Santa Rosa, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (707) 528-1050.

Verified across 5 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · 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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