Isabella Claudia Glitza, M.D.
Internal Medicine Physician · Houston, TX
Isabella Claudia Glitza, M.D. is an internal medicine physician with a practice address in Houston, Texas, and NPI 1215137187, issued on Jul 19, 2007. Check the license (Texas P0828, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Isabella Claudia Glitza
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- P0828 TX
MD440647 PA
MT190533 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1515 Holcombe Blvd, Houston, TX 77030
- Phone
- (713) 792-6161
- Enumerated
- Jul 19, 2007
- Record last updated
- Oct 28, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid IDs
- 286708701 (MDACC) TX
102546205 0001 PA - Medicare enrollment
- Enrolled (PECOS I20111129000782); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 1515 Holcombe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Isabella Claudia Glitza in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P0828Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
225 Medicare Part D claims for 43 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 68% of claims. 14 claims were for opioids.
Most prescribed
- Braftovi51 claims
- Mektovi51 claims
- Tafinlar26 claims
- Mekinist14 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $162.59
4 payments; by number, the most common kind was food and beverage; the largest payer was Iovance Biotherapeutics, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Physicians Referral ServiceHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isabella Claudia Glitza among 9,175 internal medicine physician records in Texas
Isabella Claudia Glitza, M.D. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2004 · median 2004 among the 6,088 with a school on file
- Record last updated2014 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,488 internal medicine physician records list a practice address in Houston
They are 1,488 of the 61,221 NPPES records with a practice address in Houston, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Houston → Internal Medicine Physician nationwide →
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Common questions
What is Isabella Claudia Glitza, M.D.'s NPI number?
Isabella Claudia Glitza, M.D.'s National Provider Identifier (NPI) is 1215137187, issued on Jul 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Isabella Claudia Glitza, M.D. located?
The NPPES record lists a practice address at 1515 Holcombe Blvd, Houston, TX, 77030. Phone: (713) 792-6161. Providers update this record themselves, so call before visiting.
How can I verify Isabella Claudia Glitza, M.D.'s license?
NPPES lists Texas license number P0828, 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 Isabella Claudia Glitza, M.D. prescribe under Medicare Part D?
In 2024, Isabella Claudia Glitza, M.D. had 225 Medicare Part D claims for 43 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Isabella Claudia Glitza, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.