Irma Pfister, MD
Internal Medicine Physician · Sugar Land, TX
Irma Pfister, MD is an internal medicine physician with a practice address in Sugar Land, Texas, and NPI 1790740926, issued on Apr 19, 2006. Check the license (Texas M7520, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Irma Pfister
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- M7520 TX
Self-reported in NPPES; status is on the state search - Practice location
- 11555 University Blvd, Sugar Land, TX 77478
- Phone
- (713) 442-9100
- Enumerated
- Apr 19, 2006
- Record last updated
- Jun 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 189340604 TX
189340603 TX
189340606 TX - Medicare enrollment
- Enrolled (PECOS I20071227000611); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 11555 University Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yetunde Adigun, MDObstetrics & Gynecology Physician1730356569
- Kamran Ahmed, MDHospitalist Physician1952562126
- Maria Argao, MDFamily Medicine Physician1629003769
- Cecilio Batres, MDDermatology Physician1760412423
- Spencer Berthelsen, MDInternal Medicine Physician1295763290
- Melinda Chai, MDObstetrics & Gynecology Physician1336778075
Verify Irma Pfister in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M7520Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,389 Medicare Part D claims for 715 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 232 claims were for opioids.
Most prescribed
- Atorvastatin Calcium644 claims
- Amlodipine Besylate508 claims
- Levothyroxine Sodium411 claims
- Simvastatin317 claims
- Metformin Hcl285 claims
- Rosuvastatin Calcium282 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
- Kelsey-Seybold Medical Group, PLLCSugar Land, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irma Pfister among 9,175 internal medicine physician records in Texas
Irma Pfister, MD 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1996 · median 2004 among the 6,088 with a school on file
- Record last updated2021 · 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).
110 internal medicine physician records list a practice address in Sugar Land
They are 110 of the 3,851 NPPES records with a practice address in Sugar Land, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Sugar Land → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shanaz Ali, M.D.Sugar Land, TX 774781871562272
- Anuradha Aparasu, MDSugar Land, TX 774781477510014
- Spencer Berthelsen, MDSugar Land, TX 774781295763290
- Nagasudha Chittaluru, M.DSugar Land, TX 774781972560431
- Reid Cuming, M.D., P.A.Sugar Land, TX 774781285669176
- Steven Levy, D.O.Sugar Land, TX 774781750351219
- Bhagwat Patel, M.D.,Sugar Land, TX 774781225060064
- Sohail Siddiqui, M.D.Sugar Land, TX 774781184616898
Common questions
What is Irma Pfister, MD's NPI number?
Irma Pfister, MD's National Provider Identifier (NPI) is 1790740926, issued on Apr 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Irma Pfister, MD located?
The NPPES record lists a practice address at 11555 University Blvd, Sugar Land, TX, 77478. Phone: (713) 442-9100. Providers update this record themselves, so call before visiting.
How can I verify Irma Pfister, MD's license?
NPPES lists Texas license number M7520, 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 Irma Pfister, MD prescribe under Medicare Part D?
In 2024, Irma Pfister, MD had 9,389 Medicare Part D claims for 715 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.