JOHN M. GUENST M.D.
NPI 1063452902
Internal Medicine in Nashville, TN

Q: What is John Guenst's NPI number?

The NPI number for John Guenst is 1063452902. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Q: What is John Guenst's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for John Guenst was last updated on May 7, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.

Active since June 08, 2006PECOS EnrolledAccepts Medicare Assignment

4230 HARDING RD, SUITE 400, NASHVILLE, TN 37205(615) 297-2700(615) 386-2399 Get Directions Write a Review

NPPES record last updated: May 7, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About John M. Guenst M.d. NPPES

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

JOHN M. GUENST M.D. (NPI 1063452902) is an individual internal medicine provider in Nashville, Tennessee, licensed in Tennessee (23754) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Vanderbilt University Medical Center, and is a graduate of Vanderbilt University School Of Medicine (1989).

NPPES Registry Identity

NPI1063452902

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameJOHN M. GUENSTCredential: M.D.

Location Address4230 HARDING RD, SUITE 400Nashville, TN 37205-2013

Mailing Address104 Woodmont Blvd, Suite Ll50Nashville, TN 37205-2245 · (615) 386-2300 · Fax (615) 386-2399

Phone(615) 297-2700

Fax(615) 386-2399

Sole ProprietorNo

Medical School CMSVanderbilt University School Of MedicineGraduated 1989

Enumeration DateJune 8, 2006

Last NPPES UpdateMay 7, 2015

✔ NPI 1063452902 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TN · 23754

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.

4230 HARDING RD, Nashville, TN 37205

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Other Identifiers 15

Other10075085TN · Amerigroup Tenncare

Other1100315482TN · Usa Ppo/geha

Other110217705TN · Medicare Rr

Other440460TN · United Health Care

Other5140596TN · Cigna

Other5140596TN · Cigna Ppo/pos

Other633816TN · Usa-mco

Other1029992TN · Coventry /first Health

Medicare PIN103I119212TN

Other3164316TN · Blue Cross Of Tn

Other5064018TN · Aetna

Medicaid64914971KY

Other12079591TN · Multiplan/phcs

Medicare PIN3072601TN

Medicaid1508060TN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BlueCross BlueShield of Tennessee, Cigna Healthcare, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John M. Guenst M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID648353250

PECOS Enrollment IDI20100511000615

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.

Medicare Billing Reassignment

Medicare enrollment records show John Guenst reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Advanced Diagnostic Imaging, PC

16 mi

Internal Medicine

3024 BUSINESS PARK CIR
Goodlettsville, TN 37072

Reassigned Medicare billing, Tennessee enrollment
734 clinicians in this Medicare group

NPI 1093741464 (615) 239-2061

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 21

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.

539 services217 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

225 services134 patients

Annual alcohol misuse screening, 5 to 15 minutes G0442

An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.

213 services213 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

211 services211 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

209 services209 patients

Annual depression screening, 5 to 15 minutes G0444

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

206 services206 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

157 services155 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

146 services95 patients

Online digital evaluation and management service for an established patient for up to 7 days, total time 21 or more minutes 99423

This service involves a week-long digital assessment and management program for existing patients. It includes continuous health monitoring, virtual consultations, and personalized treatment plans. The total time spent is 21 minutes or more, ensuring comprehensive care.

88 services43 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

53 services50 patients

Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes 99422

This is a digital health service for existing patients. Over a week, your healthcare provider will assess and manage your health concerns online. The total time spent communicating will be between 11-20 minutes. This service offers convenience and continuous care.

51 services37 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

31 services31 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

26 services26 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

21 services20 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

20 services17 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

19 services17 patients

Test to measure largest amount of air breathed in an out 94200

This test, called spirometry, measures your lung capacity. It involves taking a deep breath and then exhaling as forcefully as possible into a machine. The results help assess how well your lungs function.

12 services12 patients

Test to determine lung volumes using gas dilution or washout 94727

This test measures lung volumes by either diluting or washing out a known amount of gas in your lungs. You'll breathe in a harmless gas, then exhale. The exhaled air is analyzed to assess your lung capacity and function.

12 services12 patients

Test to measure resistance of the airways and lungs to differing frequencies 94728

This test measures how your lungs and airways respond to different frequencies of air pressure. It helps identify any resistance or obstruction, providing valuable information about your lung health. It's non-invasive and painless.

12 services12 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

12 services12 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Vanderbilt University Medical Center

Acute Care Hospitals · Nashville, TN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440039

Location1211 Medical Center DriveNashville, TN 37232 · Davidson County

Emergency services Birthing friendly

Ascension Saint Thomas Hospital

Acute Care Hospitals · Nashville, TN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440082

Location4220 Harding Rd, PO Box 380Nashville, TN 37205 · Davidson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37205 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

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

8 suppliers14 claims30 services$6.18 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

4 suppliers12 claims72 services$2.00 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

RICHARD C TOMICHEK M.D.

Anesthesiology

4230 HARDING RD, SUITE 435
NASHVILLE, TN 37205

Davidson County (615) 385-3704

GARY R. MCDONALD M.D.

Internal Medicine

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

LAWRENCE W FREUND D.O.

Anesthesiology (Critical Care Medicine)

4230 HARDING RD, SUITE 435
NASHVILLE, TN 37205

Davidson County (615) 385-3704

TIMOTHY D DIBBLE MD

Internal Medicine

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

H. DOUGLAS HOLLIDAY MD PLLC

Internal Medicine

4230 HARDING RD, STE. 530 HEART INSTITUTE
NASHVILLE, TN 37205

Davidson County (615) 297-6006

ASA CLYDE HEFLIN M.D.

Internal Medicine (Pulmonary Disease)

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

MS. SUSAN ST ROMAIN ANDERSON CRNA

Nurse Anesthetist, Certified Registered

4230 HARDING RD, SUITE 435
NASHVILLE, TN 37205

Davidson County (615) 385-3704

NEWTON P. ALLEN JR. M.D.

Internal Medicine

4230 HARDING RD, SUITE 400
NASHVILLE, TN 37205

Davidson County (615) 297-2700

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 John Guenst's NPI number?

The NPI number for John Guenst is 1063452902. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is John Guenst located?

John Guenst practices at 4230 Harding Rd Suite 400, Nashville, TN 37205. The listed phone number is (615) 297-2700.

What is John Guenst's specialty?

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

Is John Guenst enrolled in Medicare?

Yes. John Guenst is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for John Guenst's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Guenst reassigns Medicare benefits to Advanced Diagnostic Imaging, PC (Goodlettsville, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Guenst's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Guenst accept?

Health plans from BlueCross BlueShield of Tennessee, Cigna Healthcare and UnitedHealthcare list John Guenst 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.

Is John Guenst affiliated with any hospitals?

According to CMS data, John Guenst is affiliated with Vanderbilt University Medical Center and Ascension Saint Thomas Hospital.

When was this NPI record last updated?

The NPPES record for John Guenst was last updated on May 7, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.