DR. JOHN KENNEDY GRESHAM M.D.
NPI 1619170347
Internal Medicine - Interventional Cardiology in El Paso, TX

Q: What is John Gresham's NPI number?

The NPI number for John Gresham is 1619170347. It was assigned to this individual provider in the NPPES registry on June 8, 2007.

Q: What is John Gresham'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 Gresham was last updated on April 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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, 2007PECOS EnrolledAccepts Medicare Assignment

4815 ALAMEDA AVE, EL PASO, TX 79905(915) 215-5200(915) 215-8640 Get Directions Write a Review

NPPES record last updated: April 14, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 14, 2026, Sep 14, 2022, Jul 3, 2018 (3 updates tracked since 2018).

On this page

About Dr. John Kennedy Gresham M.d. NPPES

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

DR. JOHN KENNEDY GRESHAM M.D. (NPI 1619170347) is an individual interventional cardiology provider in El Paso, Texas, licensed in Texas (M6641) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with Carteret General Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1619170347

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameDR. JOHN KENNEDY GRESHAMCredential: M.D.

Location Address4815 ALAMEDA AVEEl Paso, TX 79905-2705

Mailing Address540 Oak Centre Dr Ste 260San Antonio, TX 78258-4767 · (210) 499-0448 · Fax (210) 370-9638

Phone(915) 215-5200

Fax(915) 215-8640

Sole ProprietorNo

Medical School CMSEastern Virginia Medical SchoolGraduated 1999

Enumeration DateJune 8, 2007

Last NPPES UpdateApril 14, 20263 updates tracked since enumeration

NPPES CertifiedApril 14, 2026

✔ NPI 1619170347 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 · M6641

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 Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 0101230320 (VA), M6641 (TX)

Also ListedNuclear Medicine · Nuclear CardiologyTaxonomy 207UN0901X · License M6641 (TX)

4815 ALAMEDA AVE, El Paso, TX 79905

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Secondary Practice Locations 2

Location 1540 Oak Centre Dr Ste 260San Antonio, TX 78258-4767 · Phone (210) 499-0448 · Fax (210) 370-9638

Location 21800 Garner Field RdUvalde, TX 78801-6210 · Phone (830) 333-8634 · Fax (830) 591-2611

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Cigna Healthcare, Oscar Insurance Company 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

Dr. John Kennedy Gresham 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 ID9537253984

PECOS Enrollment IDI20070917000474, I20260324002602

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 Reassignments

Medicare enrollment records show John Gresham reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Texas Tech University Health Sciences Center El Paso

Same address

Psychiatry

4815 ALAMEDA AVE
El Paso, TX 79905

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

NPI 1124047295 (915) 545-6830

Uvalde Medical And Surgical Associates

435 mi

Surgery

1195 GARNER FIELD RD, SUITE 300
Uvalde, TX 78801

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

NPI 1730324500 (830) 278-3086

Cardiovascular Consultants Of San Antonio, PLLC

495 mi

Interventional Cardiology

540 OAK CENTRE DR STE 260
San Antonio, TX 78258

Reassigned Medicare billing, Texas enrollment

NPI 1295001766 (210) 499-0448

Citizen's Medical Center County Of Victoria

601 mi

Multi-Specialty

2701 HOSPITAL DR
Victoria, TX 77901

Reassigned Medicare billing, Texas enrollment
Medicare enrollment name: Citizens Medical Center County Of Victoria
171 clinicians in this Medicare group

NPI 1205242088 (361) 573-9181

Carteret County General Hospital Corporation

1,724 mi

Urgent Care

3722 BRIDGES ST, SUITE A
Morehead City, NC 28557

Reassigned Medicare billing, North Carolina enrollment
283 clinicians in this Medicare group

NPI 1184951840 (252) 808-6136

Carteret Medical Group LLC

1,724 mi

Gastroenterology

302 MEDICAL PARK CT
Morehead City, NC 28557

Reassigned Medicare billing, North Carolina enrollment
86 clinicians in this Medicare group

NPI 1700164464 (252) 247-2013

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 22

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.

1,369 services674 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.

736 services583 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

713 services549 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.

412 services405 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

400 services124 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

264 services66 patients

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

132 services130 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

113 services64 patients

Technetium tc-99m tetrofosmin, diagnostic, per study dose A9502

Technetium Tc-99m Tetrofosmin is a radiopharmaceutical used in diagnostic imaging. It helps highlight areas of concern in the heart by emitting signals captured by a special camera. This assists doctors in detecting heart conditions.

94 services93 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

84 services83 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.

84 services83 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.

80 services80 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.

74 services74 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.

66 services63 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

45 services27 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.

33 services33 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.

30 services29 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.

27 services25 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.

26 services26 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.

23 services23 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

19 services11 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

18 services14 patients

Hospital Affiliations CMS Care Compare 5

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

Carteret General Hospital

Acute Care Hospitals · Morehead City, NC

3/5 CMS rating

OwnershipProprietary

CMS Certification Number340142

Location3500 Arendell StMorehead City, NC 28557 · Carteret County

Emergency services Birthing friendly

University Medical Center Of El Paso

Acute Care Hospitals · El Paso, TX

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number450024

Location4815 Alameda AveEl Paso, TX 79905 · El Paso County

Emergency services Birthing friendly

Nacogdoches Medical Center

Acute Care Hospitals · Nacogdoches, TX

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number450656

Location4920 NE Stallings DriveNacogdoches, TX 75965 · Nacogdoches County

Emergency services Birthing friendly

Uvalde Memorial Hospital

Critical Access Hospitals · Uvalde, TX

OwnershipGovernment - Hospital District or Authority

CMS Certification Number451387

Location1025 Garner Field RoadUvalde, TX 78801 · Uvalde County

Emergency services

Methodist Hospital Stone Oak

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number670055

Location1139 E Sonterra Blvd,San Antonio, TX 78258 · Bexar County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 79905 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.

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.

ROBIN O STEMERMAN AGACNP

Nurse Practitioner (Acute Care)