JOHN HOWARD FRIERSON M.D.
NPI 1326021015
Internal Medicine - Interventional Cardiology in San Antonio, TX

Q: What is John Frierson's NPI number?

The NPI number for John Frierson is 1326021015. It was assigned to this individual provider in the NPPES registry on November 28, 2005.

Q: What is John Frierson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Q: When was this NPI record last updated?

The NPPES record for John Frierson was last updated on March 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 November 28, 2005PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

1200 BROOKLYN AVE, STE 120, SAN ANTONIO, TX 78212(210) 271-7266(210) 226-8411 Get Directions Write a Review

NPPES record last updated: March 29, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About John Howard Frierson M.d. NPPES

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

JOHN HOWARD FRIERSON M.D. (NPI 1326021015) is an individual interventional cardiology provider in San Antonio, Texas, licensed in Texas (G3371) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and is a graduate of University Of Texas Medical School At San Antonio (1982).

NPPES Registry Identity

NPI1326021015

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameJOHN HOWARD FRIERSONCredential: M.D.

Location Address1200 BROOKLYN AVE, STE 120San Antonio, TX 78212-4816

Mailing Address1200 Brooklyn Ave, Ste 120San Antonio, TX 78212-4816 · (210) 271-7266 · Fax (210) 226-8411

Phone(210) 271-7266

Fax(210) 226-8411

Sole ProprietorYes

Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 1982

Enumeration DateNovember 28, 2005

Last NPPES UpdateMarch 29, 2022

NPPES CertifiedMarch 29, 2022

✔ NPI 1326021015 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Interventional CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RI0011X

License✔ Licensed in TX · G3371

Definition

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

Also ListedInternal MedicineTaxonomy 207R00000X · License G3371 (TX)

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License G3371 (TX)

1200 BROOKLYN AVE, San Antonio, TX 78212

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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 Howard Frierson 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 ID9739145228

PECOS Enrollment IDI20041207000206

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

Methodist Physician Practices, PLLC

12 mi

Surgery

15727 ANTHEM PKWY STE 600
San Antonio, TX 78249

Reassigned Medicare billing, Texas enrollment
227 clinicians in this Medicare group

NPI 1922252717 (210) 575-8501

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 27

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.

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.

756 services340 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.

490 services251 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.

387 services239 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

290 services275 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

241 services232 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

232 services228 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

132 services131 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

126 services125 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

87 services86 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

58 services37 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

57 services57 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days 93296

This procedure involves remotely monitoring your pacemaker or implantable defibrillator system. Over a 90-day period, we check the device's performance and your heart's activity. This helps ensure the device is functioning properly and providing the best possible support for your heart health.

46 services21 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294

This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.

42 services20 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

40 services40 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

26 services25 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

19 services19 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

17 services17 patients

Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch 92928

This procedure involves placing a small, mesh tube (stent) in your coronary artery to keep it open. A balloon is used to expand the stent and artery, improving blood flow to your heart. It's typically done for a single artery or branch.

16 services11 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

15 services15 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

15 services12 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

15 services15 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

14 services14 patients

Ultrasound evaluation of heart blood vessel during diagnosis or treatment, initial vessel 93571

This procedure involves using ultrasound technology to examine the first blood vessel of your heart. It helps identify any abnormalities or issues, providing crucial information for diagnosis or treatment. It's a safe, non-invasive process.

13 services13 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

13 services13 patients

Ultrasound evaluation of heart blood vessel during diagnosis or treatment, each additional vessel 93572

This procedure involves using ultrasound to examine additional heart blood vessels during diagnosis or treatment. It helps doctors visualize the structure and function of your heart, ensuring precise evaluation and care.

12 services11 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

11 services11 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

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.

Baptist Medical Center

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450058

Location111 Dallas StreetSan Antonio, TX 78205 · Bexar County

Emergency services Birthing friendly

Connally Memorial Medical Center

Acute Care Hospitals · Floresville, TX

OwnershipGovernment - Hospital District or Authority

CMS Certification Number450108

Location499 10th StreetFloresville, TX 78114 · Wilson County

Emergency services

Methodist Hospital Atascosa

Acute Care Hospitals · Jourdanton, TX

OwnershipProprietary

CMS Certification Number450165

Location1905 Hwy 97 EastJourdanton, TX 78026 · Atascosa County

Emergency services

Methodist Hospital

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450388

Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County

Emergency services Birthing friendly

Frio Regional Hospital

Critical Access Hospitals · Pearsall, TX

OwnershipVoluntary non-profit - Private

CMS Certification Number451391

Location200 S Ih 35Pearsall, TX 78061 · Frio County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78212 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

$126.40 typical visit price

range $54.84 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.05 typical visit price

range $17.52 – $136.11

Typical copayment $24.26 (range $4.38 – $34.02)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Promoting Interoperability

100

Improvement Activities

Reported Quality Measures

Coronary Artery Disease (CAD): Antiplatelet Therapy

Percentage of patients aged 18 years and older with a diagnosis of coronary artery disease (CAD) seen within a 12 month period who were prescribed aspirin or clopidogrel

75%526 patients2/55-star benchmark: 100%

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

100%4,363 patients5/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

70%1,704 patients3/55-star benchmark: 100%

Ischemic Vascular Disease (IVD): Use of Aspirin or Another Antiplatelet

Percentage of patients 18 years of age and older who were diagnosed with acute myocardial infarction (AMI), coronary artery bypass graft (CABG) or percutaneous coronary interventions (PCI) in the 12 months prior to the measurement period, or who had an active…

72%925 patients3/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

17%1,224 patients1/55-star benchmark: 100%

Preventive Care and Screening: Unhealthy Alcohol Use: Screening & Brief Counseling

Percentage of patients aged 18 years and older who were screened for unhealthy alcohol use using a systematic screening method at least once within the last 24 months AND who received brief counseling if identified as an unhealthy alcohol user

2%1,024 patients1/55-star benchmark: 100%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

95%719 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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.

DR. JOSEPH DEAN MCCRACKEN M.D.

Internal Medicine (Hematology & Oncology)

1200 BROOKLYN AVE, SUITE #115
SAN ANTONIO, TX 78212

Bexar County (210) 224-6531

KIMBERLY NICOLE CRITTENDEN M.D.

Obstetrics & Gynecology

1200 BROOKLYN AVE, SUITE 220
SAN ANTONIO, TX 78212

Bexar County (210) 228-0705

DR. ARIS NIKAS M.D.

Internal Medicine

1200 BROOKLYN AVE, STE 240
SAN ANTONIO, TX 78212

Bexar County (210) 225-4511

MARIA FERNANDA GARCIA ORTIZ PA-C

Physician Assistant

1200 BROOKLYN AVE
SAN ANTONIO, TX 78212

Bexar County (210) 224-6531

DR. RICHARD A SPEEDLIN MD

Family Medicine

1200 BROOKLYN AVE, SUITE 130
SAN ANTONIO, TX 78212

Bexar County (210) 225-3116

LETICIA VARGAS M.D.

Obstetrics & Gynecology

1200 BROOKLYN AVE, STE 365
SAN ANTONIO, TX 78212

Bexar County (210) 225-5930

ANU DHAM MD

Internal Medicine (Hematology & Oncology)

1200 BROOKLYN AVE, SUITE #115
SAN ANTONIO, TX 78212

Bexar County (210) 242-6531

DR. ZAID ALTHEEB MD

Internal Medicine (Interventional Cardiology)

1200 BROOKLYN AVE
SAN ANTONIO, TX 78212

Bexar County (210) 874-3710

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 Frierson's NPI number?

The NPI number for John Frierson is 1326021015. It was assigned to this individual provider in the NPPES registry on November 28, 2005.

Where is John Frierson located?

John Frierson practices at 1200 Brooklyn Ave Ste 120, San Antonio, TX 78212. The listed phone number is (210) 271-7266.

What is John Frierson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Is John Frierson enrolled in Medicare?

Yes. John Frierson 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 Frierson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Frierson reassigns Medicare benefits to Methodist Physician Practices, PLLC (San Antonio, 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 John Frierson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Frierson accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 4 other insurers list John Frierson 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 Frierson affiliated with any hospitals?

According to CMS data, John Frierson is affiliated with Baptist Medical Center, Connally Memorial Medical Center, Methodist Hospital Atascosa, Methodist Hospital and Frio Regional Hospital.

When was this NPI record last updated?

The NPPES record for John Frierson was last updated on March 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.