NPPES file of Aug 9, 2026

Johanna Grace Hollweg, D.O.

Gastroenterology Physician · Jbsa Ft Sam Houston, TX

Johanna Grace Hollweg, D.O. is a gastroenterology physician with a practice address in Jbsa Ft Sam Houston, Texas, and NPI 1871856757, issued on Jun 16, 2012. Check the license 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
1871856757
Name
Johanna Grace Hollweg
Credential
D.O.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
1138 NE
Self-reported in NPPES; status is on the state search
Practice location
3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234
Phone
(210) 916-3647
Enumerated
Jun 16, 2012
Record last updated
Mar 18, 2023
Fax
(210) 916-3195
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 3551 Roger Brooke Dr

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

  1. Lisa Abbott, APRN-FNPFamily Nurse Practitioner1114293784
  2. Bret Ackermann, DOEmergency Medicine Physician1316010747
  3. Jason AdamsOtology & Neurotology Physician1487155578
  4. Esteban Aguirre, DNP, APRN, AGACNP-BCNurse Practitioner1255883799
  5. Omojolaade Akintade, MD, MSCRMilitary Health Care Provider1659047785
  6. Jordyn Albert, MDMilitary Health Care Provider1003757394

Verify Johanna Grace Hollweg in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical BoardCheck 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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98% fewer Medicare Part D claims than the average gastroenterology physician in 2024

14 Medicare Part D claims, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.

  1. Johanna Hollweg14
  2. Specialty average811

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.

Johanna Grace Hollweg among 1,478 gastroenterology physician records in Texas

Johanna Grace Hollweg, D.O. is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 74% of them.

  • NPI issued2012 · 74% of these records are older, 23% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileNo · 79% of these records are
  • Record last updated2023 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

5 gastroenterology physician records list a practice address in Jbsa Ft Sam Houston

They are 5 of the 669 NPPES records with a practice address in Jbsa Ft Sam Houston, and 1,478 gastroenterology physician records in Texas.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Carlos Angueira, MDFort Sam Houston, TX 782341639168057
  2. Christina Awad, M.D.Jbsa Ft Sam Houston, TX 782341023404803
  3. Adrian Barron, M.D.San Antonio, TX 782341164734745
  4. Xiaolu Carter, D.OFort Sam Houston, TX 782341306984059
  5. David Dulaney, MDJbsa Ft Sam Houston, TX 782341427443456
  6. John Gancayco, M.D.Jbsa Ft Sam Houston, TX 782341609089390
  7. Noah Hall, M.D.Fort Sam Houston, TX 782341396056172
  8. Andrew Mertz, MDFort Sam Houston, TX 782341063948115

Common questions

What is Johanna Grace Hollweg, D.O.'s NPI number?

Johanna Grace Hollweg, D.O.'s National Provider Identifier (NPI) is 1871856757, issued on Jun 16, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Johanna Grace Hollweg, D.O. located?

The NPPES record lists a practice address at 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX, 78234. Phone: (210) 916-3647. Providers update this record themselves, so call before visiting.

How can I verify Johanna Grace Hollweg, D.O.'s license?

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 Johanna Grace Hollweg, D.O. prescribe under Medicare Part D?

In 2024, Johanna Grace Hollweg, D.O. had 14 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. 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.