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SEAN O'MAHONY MD
NPI 1467542290
Internal Medicine - Hospice and Palliative Medicine in Galveston, TX

Active since October 13, 2006PECOS EnrolledAccepts Medicare Assignment
1005 HARBORSIDE DR, FL 6, GALVESTON, TX 77555(409) 772-4950(409) 747-0707 Get Directions Write a Review

NPPES record last updated: September 5, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Sean O'mahony Md NPPES

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

SEAN O'MAHONY MD (NPI 1467542290) is an individual hospice and palliative medicine provider in Galveston, Texas, licensed in Texas (W0973) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Texas Medical Branch Galveston, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1467542290
Entity TypeIndividualMale
Primary Taxonomy207RH0002X
Provider Legal NameSEAN O'MAHONYCredential: MD
Location Address1005 HARBORSIDE DR, FL 6Galveston, TX 77555-0001
Mailing Address1725 W Harrison St Ste 10Chicago, IL 60612-3849 · (312) 942-7030 · Fax (718) 881-6054
Phone(409) 772-4950
Fax(409) 747-0707
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateOctober 13, 2006
Last NPPES UpdateSeptember 5, 2025
NPPES CertifiedSeptember 5, 2025
✔ NPI 1467542290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
License✔ Licensed in TX · W0973
Definition
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
Also ListedInternal MedicineTaxonomy 207R00000X · License 036126119 (IL)
1005 HARBORSIDE DR, Galveston, TX 77555
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11725 W Harrison St Ste 10Chicago, IL 60612-3849 · Phone (312) 942-7030 · Fax (718) 881-6054
Location 2MMC-Palliative Care Servc, 3335 Steuben AveBronx, NY 10467 · Phone (718) 920-6378

Accepted Insurance

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

Sean O'mahony Md 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 ID8325126980
PECOS Enrollment IDI20240525000383
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 6

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.

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.
70 services27 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.
42 services32 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.
41 services35 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.
21 services20 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.
17 services17 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
14 services12 patients

Hospital Affiliations CMS Care Compare

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

University Of Texas Medical Branch Galveston

Acute Care Hospitals · Galveston, TX
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number450018
Location301 University BoulevardGalveston, TX 77555 · Galveston County
Emergency services Birthing friendly

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. JONATHAN A. GERBER M.D.
Urology
1005 HARBORSIDE DR
GALVESTON, TX 77555
Galveston County (409) 772-6781
DR. JOSHUA PERSON M.D.
Surgery (Trauma Surgery)
1005 HARBORSIDE DR
GALVESTON, TX 77555
Galveston County (409) 772-6789
AJAY MITTER MD
Internal Medicine (Hematology & Oncology)
1005 HARBORSIDE DR, FL 6
GALVESTON, TX 77555
Galveston County (409) 772-0035
YVETTE F GORDON M.D.
Obstetrics & Gynecology
1005 HARBORSIDE DR
GALVESTON, TX 77555
Galveston County (409) 772-9057
DEENA KAPADIA MD
Internal Medicine (Gastroenterology)
1005 HARBORSIDE DR, FL 6
GALVESTON, TX 77555
Galveston County (409) 772-0122
MICHAEL ERICKSON DO
Surgery (Trauma Surgery)
1005 HARBORSIDE DR
GALVESTON, TX 77555
Galveston County (409) 772-6781
DIANA ARELLANO
Surgery (Trauma Surgery)
1005 HARBORSIDE DR
GALVESTON, TX 77555
Galveston County (409) 772-6789
CHERYL BREAUX APRN-FNP
Nurse Practitioner (Acute Care)
1005 HARBORSIDE DR, FL 5
GALVESTON, TX 77555
Galveston County (409) 772-6781

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 Sean O'mahony's NPI number?

The NPI number for Sean O'mahony is 1467542290. It was assigned to this individual provider in the NPPES registry on October 13, 2006.

Where is Sean O'mahony located?

Sean O'mahony practices at 1005 Harborside Dr Fl 6, Galveston, TX 77555. The listed phone number is (409) 772-4950.

What is Sean O'mahony's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Sean O'mahony enrolled in Medicare?

Yes. Sean O'mahony 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 Sean O'mahony accept?

Health plans from Blue Cross and Blue Shield of Texas, Community Health Choice and Oscar Insurance Company list Sean O'mahony 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 Sean O'mahony affiliated with any hospitals?

According to CMS data, Sean O'mahony is affiliated with University Of Texas Medical Branch Galveston.

When was this NPI record last updated?

The NPPES record for Sean O'mahony was last updated on September 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.