DR. MICHAEL THOMAS JOHNSTON M.D.
NPI 1144232265
Internal Medicine in Dallas, TX

Q: What is Michael Johnston's NPI number?

The NPI number for Michael Johnston is 1144232265. It was assigned to this individual provider in the NPPES registry on August 13, 2006.

Q: What is Michael Johnston'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 Michael Johnston was last updated on April 13, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 August 13, 2006PECOS EnrolledAccepts Medicare Assignment

3417 GASTON AVE, SUITE 1000, DALLAS, TX 75246(469) 800-9000(469) 800-9010 Get Directions Write a Review

NPPES record last updated: April 13, 2017. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Michael Thomas Johnston M.d. NPPES

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

DR. MICHAEL THOMAS JOHNSTON M.D. (NPI 1144232265) is an individual internal medicine provider in Dallas, Texas, licensed in Texas (K0498) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Baylor University Medical Center, and is a graduate of University Of Texas Medical School At San Antonio (1995).

NPPES Registry Identity

NPI1144232265

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. MICHAEL THOMAS JOHNSTONCredential: M.D.

Location Address3417 GASTON AVE, SUITE 1000Dallas, TX 75246-2016

Mailing Address3417 Gaston Ave, Suite 1000Dallas, TX 75246-2016 · (469) 800-9000 · Fax (469) 800-9010

Phone(469) 800-9000

Fax(469) 800-9010

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 1995

Enumeration DateAugust 13, 2006

Last NPPES UpdateApril 13, 2017

✔ NPI 1144232265 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TX · K0498

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.

3417 GASTON AVE, Dallas, TX 75246

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Other Identifiers 5

Medicare UPING71967TX

Other87X763TX · Bcbs

Medicare PIN87X763TX

Medicare PIN110169608TX

Medicaid046192301TX

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.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

Dr. Michael Thomas Johnston 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 ID2860520160

PECOS Enrollment IDI20100506000839

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 Michael Johnston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Healthtexas Provider Network

0.1 mi

Anesthesiology

3600 GASTON AVE STE 550
Dallas, TX 75246

Reassigned Medicare billing, Texas enrollment
3,167 clinicians in this Medicare group

NPI 1174416689 (214) 821-1177

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.

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

1,920 services18 patients

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.

674 services350 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

629 services411 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.

346 services346 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.

253 services229 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.

128 services125 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.

56 services56 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.

56 services56 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

32 services18 patients

Detection test by immunoassay with direct visual observation for influenza virus 87804

This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.

28 services14 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

23 services21 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.

23 services23 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.

23 services22 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

20 services20 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.

17 services16 patients

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

16 services16 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.

15 services14 patients

Screening 3d breast mammography 77063

Screening 3D breast mammography is a procedure that uses low-dose X-rays to create detailed images of the breast. This allows for early detection of any unusual changes or growths. It's a non-invasive, outpatient procedure that typically takes about 30 minutes.

14 services14 patients

Screening mammography 77067

Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.

14 services14 patients

Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus 87426

An immunoassay test for severe acute respiratory syndrome coronavirus is a diagnostic tool. It uses your body's immune response to detect the presence of the virus. It involves taking a sample, usually from your nose or throat, which is then analyzed in a lab for signs of the virus.

14 services14 patients

Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438

An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Baylor University Medical Center

Acute Care Hospitals · Dallas, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number450021

Location3500 Gaston AveDallas, TX 75246 · Dallas County

Emergency services Birthing friendly

Methodist Dallas Medical Center

Acute Care Hospitals · Dallas, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number450051

Location1441 North Beckley AvenueDallas, TX 75203 · Dallas County

Emergency services Birthing friendly

Texas Health Presbyterian Hospital Dallas

Acute Care Hospitals · Dallas, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450462

Location8200 Walnut Hill LaneDallas, TX 75231 · Dallas County

Emergency services Birthing friendly

Baylor Scott And White Medical Center Lake Pointe

Acute Care Hospitals · Rowlett, TX

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number450742

Location6800 Scenic DrRowlett, TX 75088 · Dallas County

Emergency services Birthing friendly

Baylor Scott & White Medical Center Plano

Acute Care Hospitals · Plano, TX

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number450890

Location4700 Alliance BoulevardPlano, TX 75093 · Collin County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75246 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

$131.01 typical visit price

range $57.18 – $172.86

Typical copayment $32.75 (range $14.29 – $43.21)

Most-billed visit code 99204

Established Patient

$100.80 typical visit price

range $18.48 – $141.20

Typical copayment $25.20 (range $4.62 – $35.30)

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 6

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

17 suppliers40 claims106 services$5.66 avg. paid by Medicare

Intermittent urinary catheter, with insertion supplies A4353

DME-Orthotic Devices · category DF008N

2 suppliers11 claims395 services$6.30 avg. paid by Medicare

Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357

DME-Orthotic Devices · category DF000N

2 suppliers11 claims22 services$7.99 avg. paid by Medicare

Urinary drainage bag, leg or abdomen, vinyl, with or without tube, with straps, each A4358

DME-Orthotic Devices · category DF000N

2 suppliers11 claims22 services$5.45 avg. paid by Medicare

Lightweight wheelchair K0003

DME-Wheelchairs · category DD000N

1 supplier20 claims20 services$20.78 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

2 suppliers17 claims17 services$172.86 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.

KASEY POMPOSELLI KEENE PA-C

Physician Assistant

3417 GASTON AVE, SUITE 830
DALLAS, TX 75246

Dallas County (214) 826-6021

RHONDA CHOI FNP-C

Nurse Practitioner (Family)

3417 GASTON AVE
DALLAS, TX 75246

Dallas County (469) 800-9000

DR. WELDON LLOYD SMITH JR. M.D.

Internal Medicine

3417 GASTON AVE, SUITE 1100
DALLAS, TX 75246

Dallas County (469) 800-9000

GREGORY ROBERT THORESON M.D.

Urology

3417 GASTON AVE, SUITE 830
DALLAS, TX 75246

Dallas County (214) 826-6021

ROBERT CLIFTON SCHOENVOGEL M.D.

Urology

3417 GASTON AVE, SUITE 830
DALLAS, TX 75246

Dallas County (214) 826-6021

DR. SUSAN ELIZABETH FAVOUR MD

Internal Medicine

3417 GASTON AVE, SUITE 1000
DALLAS, TX 75246

Dallas County (469) 800-9000

DR. GRETA VANCE BRODSKY M.D.

Internal Medicine

3417 GASTON AVE, SUITE 700
DALLAS, TX 75246

Dallas County (214) 823-4800

NALLELY GARCIA-RAMOS NP

Nurse Practitioner (Family)

3417 GASTON AVE
DALLAS, TX 75246

Dallas County (469) 800-9000

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 Michael Johnston's NPI number?

The NPI number for Michael Johnston is 1144232265. It was assigned to this individual provider in the NPPES registry on August 13, 2006.

Where is Michael Johnston located?

Michael Johnston practices at 3417 Gaston Ave Suite 1000, Dallas, TX 75246. The listed phone number is (469) 800-9000.

What is Michael Johnston's specialty?

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

Is Michael Johnston enrolled in Medicare?

Yes. Michael Johnston 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 Michael Johnston's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Johnston reassigns Medicare benefits to Healthtexas Provider Network (Dallas, TX). 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 Michael Johnston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Johnston accept?

Health plans from Blue Cross and Blue Shield of Texas list Michael Johnston 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 Michael Johnston affiliated with any hospitals?

According to CMS data, Michael Johnston is affiliated with Baylor University Medical Center, Methodist Dallas Medical Center, Texas Health Presbyterian Hospital Dallas, Baylor Scott And White Medical Center Lake Pointe and Baylor Scott & White Medical Center Plano.

When was this NPI record last updated?

The NPPES record for Michael Johnston was last updated on April 13, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.