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GREGORY L. SHANNON M.D.
NPI 1730148495
Internal Medicine - Gastroenterology in Sugar Land, TX

Active since March 21, 2006PECOS EnrolledAccepts Medicare Assignment
75/100
CMS Quality Rating
17510 W GRAND PKWY S, #220, SUGAR LAND, TX 77479(281) 201-1338(281) 201-1353 Get Directions Write a Review

NPPES record last updated: September 26, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Gregory L. Shannon M.d. NPPES

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

GREGORY L. SHANNON M.D. (NPI 1730148495) is an individual gastroenterology provider in Sugar Land, Texas, licensed in Texas (K7479) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Houston Methodist Sugarland Hospital, and is a graduate of Northwestern University Feinberg Medical School (1996).

NPPES Registry Identity

NPI1730148495
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameGREGORY L. SHANNONCredential: M.D.
Location Address17510 W GRAND PKWY S, #220Sugar Land, TX 77479-2645
Mailing Address17510 W Grand Pkwy S, #220Sugar Land, TX 77479-2645 · (281) 201-1338 · Fax (281) 201-1353
Phone(281) 201-1338
Fax(281) 201-1353
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 1996
Enumeration DateMarch 21, 2006
Last NPPES UpdateSeptember 26, 2023
NPPES CertifiedSeptember 26, 2023
✔ NPI 1730148495 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in TX · K7479
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
Also ListedSpecialistTaxonomy 174400000X · License 036-107804 (IL), 2001-1396 (NC)
17510 W GRAND PKWY S, Sugar Land, TX 77479
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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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gregory L. Shannon 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 ID4183690845
PECOS Enrollment IDI20040903000931
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.

Areas of Expertise CMS Part B claims 11

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
1,103 services221 patients
Special stained specimen slides to identify organisms including interpretation and report 88312
This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.
356 services67 patients
Special stained specimen slides to examine tissue including interpretation and report 88313
Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.
353 services68 patients
Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
252 services251 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.
136 services124 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
107 services107 patients

Hospital Affiliations CMS Care Compare 2

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

Houston Methodist Sugarland Hospital

Acute Care Hospitals · Sugar Land, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450820
Location16655 Southwest FreewaySugar Land, TX 77479 · Fort Bend County
Emergency services Birthing friendly

Memorial Hermann Sugar Land Hospital

Acute Care Hospitals · Sugar Land, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450848
Location17500 W Grand Parkway SouthSugar Land, TX 77479 · Fort Bend County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77479 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.

75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored

Reported Quality Measures

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.
71%524 patients3/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
0%980 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…
74%980 patients3/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
71%980 patients4/55-star benchmark: 79%
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. KALPESH HARSHAD THAKKAR MD
Pediatrics (Pediatric Gastroenterology)
17510 W GRAND PKWY S
SUGAR LAND, TX 77479
Fort Bend County (281) 725-5855
AFFINITY FAMILY MEDICINE AND WELLNESS CENTER, PA
Family Medicine
17510 W GRAND PKWY S, SUITE 380
SUGAR LAND, TX 77479
Fort Bend County (281) 238-0200
HOUSTON AREA PEDIATRIC NEUROLOGY PLLC
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
17510 W GRAND PKWY S, SUITE 440
SUGAR LAND, TX 77479
Fort Bend County (832) 471-6248
DR. ROBERT MORGAN HILLERY M.D.
Surgery
17510 W GRAND PKWY S, SUITE 490
SUGAR LAND, TX 77479
Fort Bend County (713) 772-1200
MEGAN JENKINS KALAMBO M.D.
Radiology (Diagnostic Radiology)
17510 W GRAND PKWY S, SUTIE 120
SUGAR LAND, TX 77479
Fort Bend County (713) 745-4555
SURYA K BATTU M.D.
Pediatrics
17510 W GRAND PKWY S, SUITE # 340
SUGAR LAND, TX 77479
Fort Bend County (281) 342-7111
DANIELLE ANN KAESER MS, LAT, ATC, CES
Specialist/Technologist (Athletic Trainer)
17510 W GRAND PKWY S
SUGAR LAND, TX 77479
Fort Bend County (908) 421-5219
AMIT AGARWAL M.D.
Colon & Rectal Surgery
17510 W GRAND PKWY S, STE 190
SUGAR LAND, TX 77479
Fort Bend County (713) 486-4742

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 Shannon's NPI number?

The NPI number for Gregory Shannon is 1730148495. It was assigned to this individual provider in the NPPES registry on March 21, 2006.

Where is Gregory Shannon located?

Gregory Shannon practices at 17510 W Grand Pkwy S #220, Sugar Land, TX 77479. The listed phone number is (281) 201-1338.

What is Gregory Shannon's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Gregory Shannon enrolled in Medicare?

Yes. Gregory Shannon 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.

What insurance does Gregory Shannon 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 6 other insurers list Gregory Shannon 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 Gregory Shannon affiliated with any hospitals?

According to CMS data, Gregory Shannon is affiliated with Houston Methodist Sugarland Hospital and Memorial Hermann Sugar Land Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Shannon was last updated on September 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.