Mark Gerard Macgregor, MD
Internal Medicine Physician · Webster, TX
Mark Gerard Macgregor, MD is an internal medicine physician with a practice address in Webster, Texas, and NPI 1205923851, issued on Oct 6, 2006. Check the license (Texas H2552, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Gerard Macgregor
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- H2552 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1010 S Ponds Dr, Webster, TX 77598
- Phone
- (713) 442-4500
- Enumerated
- Oct 6, 2006
- Record last updated
- Jun 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 104746606 TX
104746605 TX
104746607 TX - Medicare enrollment
- Enrolled (PECOS I20040616000839); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 1986
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 1010 S Ponds Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Gerard Macgregor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license H2552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
143 Medicare Part D claims for 49 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Jardiance12 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.
Industry payments in 2024: $23.88
1 payment: food and beverage; the largest payer was Gilead Sciences, 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
- Kelsey-Seybold Medical Group, PLLCWebster, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Gerard Macgregor among 9,175 internal medicine physician records in Texas
Mark Gerard Macgregor, 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
- Graduated1986 · 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).
69 internal medicine physician records list a practice address in Webster
They are 69 of the 1,514 NPPES records with a practice address in Webster, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Webster → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Maha Al-Lahiq, M.D.Webster, TX 775981023008190
- Muhammad Arian, M.D.Webster, TX 775981477507044
- Smriti Choudhary, MDWebster, TX 775981619971553
- Niraj Choudhary, M.D.Webster, TX 775981013906684
- Pamela Dugano - Daphnis, MDWebster, TX 775981982695037
- Daniel Kim, M.D.Webster, TX 775981457349854
- Jamil Memon, M.D.Webster, TX 775981790730430
- Wajid Mirza, D.O.Webster, TX 775981457349888
Common questions
What is Mark Gerard Macgregor, MD's NPI number?
Mark Gerard Macgregor, MD's National Provider Identifier (NPI) is 1205923851, issued on Oct 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Gerard Macgregor, MD located?
The NPPES record lists a practice address at 1010 S Ponds Dr, Webster, TX, 77598. Phone: (713) 442-4500. Providers update this record themselves, so call before visiting.
How can I verify Mark Gerard Macgregor, MD's license?
NPPES lists Texas license number H2552, 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 Mark Gerard Macgregor, MD prescribe under Medicare Part D?
In 2024, Mark Gerard Macgregor, MD had 143 Medicare Part D claims for 49 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.