NPPES file of Aug 9, 2026

Louis Marc Hamer, MD

Pulmonary Disease Physician · Pasadena, TX

Louis Marc Hamer, MD is a pulmonary disease physician with a practice address in Pasadena, Texas, and NPI 1326083288, issued on Jun 17, 2006. Check the license (Texas J3113, 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
1326083288
Name
Louis Marc Hamer
Credential
MD
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
J3113 TX
Self-reported in NPPES; status is on the state search
Practice location
5010 Crenshaw, Pasadena, TX 77505
Phone
(832) 399-0399
Enumerated
Jun 17, 2006
Record last updated
Feb 21, 2022
Fax
(832) 399-0398
Medicaid ID
122033705 TX
Medicare enrollment
Enrolled (PECOS I20041112000978); accepts Medicare assignment
Medical or professional school
Perelman School Of Med At The University Of Pennsylvania, 1988
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.
Download card Updates feed

Verify Louis Marc Hamer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license J3113
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

8% fewer Medicare Part D claims than the average pulmonary disease physician in 2024

1,308 Medicare Part D claims for 304 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.

  1. Louis Hamer1,308
  2. Specialty average1,425

Most prescribed

  1. Albuterol Sulfate Hfa292 claims
  2. Prednisone147 claims
  3. Trelegy Ellipta127 claims
  4. Cefdinir114 claims
  5. Fluticasone Propionate85 claims
  6. Breo Ellipta65 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.

Louis Marc Hamer among 967 pulmonary disease physician records in Texas

Louis Marc Hamer, MD is one of 967 pulmonary disease physician records with a practice address in Texas. 88% 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 16% of them.

  • NPI issued2006 · 16% of these records are older, 52% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 80% of these records are
  • Graduated1988 · median 2001 among the 773 with a school on file
  • Record last updated2022 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pulmonary Disease Physician providers in Texas

There are 967 pulmonary disease physician records in Texas.

The 8 pulmonary disease physician records with the nearest ZIP codes

  1. Muhammad Faisal, M.D.Pasadena, TX 775041073601928
  2. George Nassif, M.D.Pasadena, TX 775041922204270
  3. David Stein, MDPasadena, TX 775041518025063
  4. Farouk Barbandi, MDBaytown, TX 775211700861887
  5. Houssam Oueini, M.D.Baytown, TX 775211194038281
  6. Atif Qureshi, M.D.Baytown, TX 775211477614303
  7. Anastasiia Rudkovskaia, MDBaytown, TX 775211245642362
  8. Raziuddin Ahmed, MDSugar Land, TX 774791952562407

Common questions

What is Louis Marc Hamer, MD's NPI number?

Louis Marc Hamer, MD's National Provider Identifier (NPI) is 1326083288, issued on Jun 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Louis Marc Hamer, MD located?

The NPPES record lists a practice address at 5010 Crenshaw, Pasadena, TX, 77505. Phone: (832) 399-0399. Providers update this record themselves, so call before visiting.

How can I verify Louis Marc Hamer, MD's license?

NPPES lists Texas license number J3113, 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 Louis Marc Hamer, MD prescribe under Medicare Part D?

In 2024, Louis Marc Hamer, MD had 1,308 Medicare Part D claims for 304 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.

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.