NPPES file of Aug 9, 2026

Sean O'Mahony, MD

Hospice and Palliative Medicine (Internal Medicine) Physician · Galveston, TX

Sean O'Mahony, MD is a hospice and palliative medicine (internal medicine) physician with a practice address in Galveston, Texas, and NPI 1467542290, issued on Oct 13, 2006. Check the license (Texas W0973, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1467542290
Name
Sean O'Mahony
Credential
MD
Primary taxonomy
Hospice and Palliative Medicine (Internal Medicine) Physician 207RH0002X
License numbers
W0973 TX
036126119 IL
Self-reported in NPPES; status is on the state search
Practice location
1005 Harborside Dr, Galveston, TX 77555
Phone
(409) 772-4950
Enumerated
Oct 13, 2006
Record last updated
Sep 5, 2025
Fax
(409) 747-0707
Medicare enrollment
Enrolled (PECOS I20240525000383); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest hospice and palliative medicine (internal medicine) physician records → All 169 in Texas → Look up another NPI →

Also registered at 1005 Harborside Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Hesham Abowali, MDHematology & Oncology Physician1447806955
  2. Diana ArellanoTrauma Surgery Physician1407276439
  3. Cheryl Breaux, APRN-FNPAcute Care Nurse Practitioner1417372418
  4. Michael Erickson, DOTrauma Surgery Physician1336529312
  5. Jessica Evans, FNPFamily Nurse Practitioner1871121426
  6. Jonathan Gerber, M.D.Urology Physician1063857571

Verify Sean O'Mahony in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license W0973    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

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24% fewer Medicare Part D claims than the average hospice and palliative medicine (internal medicine) physician in 2024

566 Medicare Part D claims for 113 beneficiaries, against an average of 741 among the 1,607 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 341 claims were for opioids.

  1. Sean O'Mahony566
  2. Specialty average741

Most prescribed

  1. Hydrocodone-Acetaminophen73 claims
  2. Oxycodone Hcl49 claims
  3. Gabapentin45 claims
  4. Hydromorphone Hcl39 claims
  5. Fentanyl37 claims
  6. Pregabalin34 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Utmb Faculty Group PracticeGalveston, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sean O'Mahony among 169 hospice and palliative medicine (internal medicine) physician records in Texas

Sean O'Mahony, MD is one of 169 hospice and palliative medicine (internal medicine) physician records with a practice address in Texas. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.

  • NPI issued2006 · 1% of these records are older, 79% newer
  • In a Medicare fileYes · 91% of these records are
  • In the CMS Doctors and Clinicians fileYes · 80% of these records are
  • Graduated1991 · median 2012 among the 136 with a school on file
  • Record last updated2025 · 30% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0002X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospice and Palliative Medicine (Internal Medicine) Physician providers in Texas

There are 169 hospice and palliative medicine (internal medicine) physician records in Texas.

All 169 in Texas → Every provider in Galveston → Hospice and Palliative Medicine (Internal Medicine) Physician nationwide →

The 8 hospice and palliative medicine (internal medicine) physician records with the nearest ZIP codes

  1. Melissa Andrade, MDGalveston, TX 775551598350530
  2. Moustafa El Sayed, MDGalveston, TX 775551780115097
  3. Rebecca Lee, M.D.Galveston, TX 775551447670088
  4. Jose Mendoza, M.D.Galveston, TX 775551699118307
  5. Brianna Probasco, MDGalveston, TX 775551730717588
  6. Stacey Muhammad, M.D.Webster, TX 775981366439853
  7. Channon Hudgins, M.D.Sugar Land, TX 774791255521191
  8. Wai Yim Lam, M.D.Shenandoah, TX 773851194090431

Common questions

What is Sean O'Mahony, MD's NPI number?

Sean O'Mahony, MD's National Provider Identifier (NPI) is 1467542290, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sean O'Mahony, MD located?

The NPPES record lists a practice address at 1005 Harborside Dr, Galveston, TX, 77555. Phone: (409) 772-4950. Providers update this record themselves, so call before visiting.

How can I verify Sean O'Mahony, MD's license?

NPPES lists Texas license number W0973, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Sean O'Mahony, MD prescribe under Medicare Part D?

In 2024, Sean O'Mahony, MD had 566 Medicare Part D claims for 113 beneficiaries; the average among hospice and palliative medicine (internal medicine) physician prescribers was 741. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.