Jordan J Grnak, DO

Internal Medicine

Jordan J Grnak is an Internal Medicine specialist based in Greenville, SC with over 8 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(864) 242-4122Greenville, SC
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Jordan J Grnak, DO has practiced internal medicine for 8+ years, working in group practice. He graduated from Lake Erie College of Osteopathic Medicine, Erie in 2018 and has 8+ years of clinical experience. He regularly sees Medicare patients with high cholesterol, hypertension, and arthritis (per CMS claims data).

At a glance

  • Prescribes opioids less than 56% of reporting doctors in South Carolina
  • Uses generic medications more than 37% of reporting doctors in South Carolina
  • Virtual visits available — no app or travel required
1 of 284 Internal Medicine providers in SCSee all Internal Medicine in Greenville8+ years experienceNPI since 2018

Older · 1790dNPPES updated 2021-06-28 · verify NPI on CMS · Verify license at South Carolina Board of Medical Examiners

Contact & Location

Practice Location

5 S Lewis Plz, Greenville, SC 29605-2944

CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.

Opioid Rx

↓ Lower = better

0.73%

South Carolina avg: 4.6 · US avg: 5.1

Higher than most doctors nationally(-4.4 pts)

Typical range among reporting doctors in South Carolina

0.73% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Generic Rx

↑ Higher = better

86%

South Carolina avg: 83.3 · US avg: 82.8

Higher than most doctors nationally(+3.2 pts)

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

126

Unique beneficiaries

Standard volume

Prescription Recipients

306

Patients prescribed

Prescriptions Written

3,015

Total claims

Total Medicare drug cost: $314k

Percentile rankings compared against 605 reporting peers in South Carolina.

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 High Cholesterol, Hypertension, and Arthritis.

High Cholesterol
70%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%
Hypertension
Lower than avg (-13%)57%

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

US avg: 70.2%

↓ Fewer patients than average (-13%) — less common here

Arthritis
Lower than avg (-9%)40%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

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

Anxiety Disorders
Lower than avg (-8%)26%

Excessive worry or fear that interferes with daily life

US avg: 34.1%

↓ Fewer patients than average (-8%) — less common here

Diabetes
Lower than avg (-9%)25%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

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

Mood Disorders
22%

Conditions affecting emotional state, including depression and bipolar disorder

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 · 2018

    Lake Erie College of Osteopathic Medicine

  2. Board certified · Jun 27, 2021

    Self-reported via NPPES

  3. 8 years in practice

    Established

Internal MedicineAllopathic & Osteopathic Physicians

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.

Taxonomy: 207R00000X

Education & Training

Lake Erie College of Osteopathic Medicine, Erie (Class of 2018)

Virtual Internal Medicine Care With Jordan J Grnak

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

Schedule a virtual visit with Jordan J Grnak for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Greenville 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 Jordan J Grnak

NPI records show Dr. Grnak as active with telehealth listed in Greenville, SC. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (864) 242-4122.

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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Claim Profile

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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