GREGORY DUNCAN MCCARROLL M.D.
NPI 1255422614
Internal Medicine in San Antonio, TX

Q: What is Gregory Mccarroll's NPI number?

The NPI number for Gregory Mccarroll is 1255422614. It was assigned to this individual provider in the NPPES registry on September 28, 2006.

Q: What is Gregory Mccarroll'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 Gregory Mccarroll was last updated on February 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 September 28, 2006PECOS EnrolledAccepts Medicare Assignment

7622 LOUIS PASTEUR DR, STE. 100, SAN ANTONIO, TX 78229(210) 614-7840(210) 614-6421 Get Directions Write a Review

NPPES record last updated: February 21, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 21, 2018, Oct 17, 2016 (2 updates tracked since 2016).

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About Gregory Duncan Mccarroll M.d. NPPES

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

GREGORY DUNCAN MCCARROLL M.D. (NPI 1255422614) is an individual internal medicine provider in San Antonio, Texas, licensed in Texas (G5351) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and is a graduate of University Of Texas Medical Branch At Galveston (1983).

NPPES Registry Identity

NPI1255422614

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameGREGORY DUNCAN MCCARROLLCredential: M.D.

Location Address7622 LOUIS PASTEUR DR, STE. 100San Antonio, TX 78229-4037

Mailing Address7622 Louis Pasteur Dr, Ste. 100San Antonio, TX 78229-4037 · (210) 614-7840 · Fax (210) 614-6421

Phone(210) 614-7840

Fax(210) 614-6421

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical Branch At GalvestonGraduated 1983

Enumeration DateSeptember 28, 2006

Last NPPES UpdateFebruary 21, 20182 updates tracked since enumeration

✔ NPI 1255422614 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 · G5351

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.

7622 LOUIS PASTEUR DR, San Antonio, TX 78229

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Other Identifiers 2

Other1247207-05TX · Wellmed Medicaid

Other354622YLPSTX · Wellmed Medicare

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

Gregory Duncan Mccarroll 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 ID7416072772

PECOS Enrollment IDI20100910000368

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

Wellmed Medical Group, PA

1.4 mi

Internal Medicine

4438 CENTERVIEW
San Antonio, TX 78228

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

NPI 1437156486 (210) 280-0040

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 9

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 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.

499 services258 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.

378 services210 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.

25 services25 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.

21 services21 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

21 services20 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

17 services16 patients

Hospital Affiliations CMS Care Compare

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 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.

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.

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

4 suppliers14 claims43 services$1.75 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

3 suppliers21 claims21 services$191.23 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 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. PATRICIA SHING CHUNG M.D.

Family Medicine

7622 LOUIS PASTEUR DR
SAN ANTONIO, TX 78229

Bexar County (210) 610-3859

CARLOS PERCHES MD

Family Medicine

7622 LOUIS PASTEUR DR, STE 100
SAN ANTONIO, TX 78229

Bexar County (210) 614-7840

CHRISTOPHER WILLIAM ARNOLD MD

Family Medicine

7622 LOUIS PASTEUR DR, 100
SAN ANTONIO, TX 78229

Bexar County (210) 614-7840

MRS. DEANNA PATEK RN, BSB, BSN

Nurse Practitioner (Gerontology)

7622 LOUIS PASTEUR DR
SAN ANTONIO, TX 78229

Bexar County (210) 610-3859

ROSSLYN WOLFE BLAKE GNP/FNP

Nurse Practitioner (Family)

7622 LOUIS PASTEUR DR, STE 201
SAN ANTONIO, TX 78229

Bexar County (210) 610-3859

DR. ROSA ISELA VIZCARRA MD

Family Medicine (Geriatric Medicine)

7622 LOUIS PASTEUR DR, STE 201
SAN ANTONIO, TX 78229

Bexar County (210) 610-3859

KIMBERLY KAY GARZA NP

Nurse Practitioner (Adult Health)

7622 LOUIS PASTEUR DR, STE 201
SAN ANTONIO, TX 78229

Bexar County (210) 732-3668

ROBIN EICKHOFF MD

Family Medicine

7622 LOUIS PASTEUR DR, STE 100
SAN ANTONIO, TX 78229

Bexar County (210) 614-7840

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 Gregory Mccarroll's NPI number?

The NPI number for Gregory Mccarroll is 1255422614. It was assigned to this individual provider in the NPPES registry on September 28, 2006.

Where is Gregory Mccarroll located?

Gregory Mccarroll practices at 7622 Louis Pasteur Dr Ste. 100, San Antonio, TX 78229. The listed phone number is (210) 614-7840.

What is Gregory Mccarroll's specialty?

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

Is Gregory Mccarroll enrolled in Medicare?

Yes. Gregory Mccarroll 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 Gregory Mccarroll's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Mccarroll reassigns Medicare benefits to Wellmed Medical Group, PA (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 Gregory Mccarroll's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Gregory Mccarroll affiliated with any hospitals?

According to CMS data, Gregory Mccarroll is affiliated with Baptist Medical Center.

When was this NPI record last updated?

The NPPES record for Gregory Mccarroll was last updated on February 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.