Margaret Mary Sullivan, MD
Cardiovascular Disease Physician · Ennis, TX
Margaret Mary Sullivan, MD is a cardiovascular disease physician with a practice address in Ennis, Texas, and NPI 1134330178, issued on May 24, 2007. Check the license (Texas N5421, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Margaret Mary Sullivan
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- N5421 TX
Self-reported in NPPES; status is on the state search - Practice location
- 802 W Lampasas St, Ennis, TX 75119
- Phone
- (972) 875-4700
- Enumerated
- May 24, 2007
- Record last updated
- Aug 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101118000478); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 2004
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,603 in Texas → Look up another NPI →
Also registered at 802 W Lampasas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susanna Ferguson, RN, FNPFamily Nurse Practitioner1669922100
- Merle Filecia, FNP-CFamily Nurse Practitioner1447389804
- Kayla Graff, FNP-CFamily Nurse Practitioner1255260220
- Larry Jinks, MDInternal Medicine Physician1750485306
- Nandish Patel, APNGerontology Nurse Practitioner1699545996
- Miatta Sawyerr, NPNurse Practitioner1558031922
Verify Margaret Mary Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N5421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% more Medicare Part D claims than the average cardiovascular disease physician in 2024
4,107 Medicare Part D claims for 394 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Amlodipine Besylate377 claims
- Metoprolol Succinate362 claims
- Entresto346 claims
- Eliquis285 claims
- Losartan Potassium223 claims
- Rosuvastatin Calcium154 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 MIPS final score for 2023 (Medicare payment program): 98 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $216.70
12 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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
- Texas Specialty PhysiciansEnnis, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Mary Sullivan among 1,603 cardiovascular disease physician records in Texas
Margaret Mary Sullivan, MD is one of 1,603 cardiovascular 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 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 33% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2004 · median 1998 among the 1,219 with a school on file
- Record last updated2017 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Texas
There are 1,603 cardiovascular disease physician records in Texas.
All 1,603 in Texas → Every provider in Ennis → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Amit Guttigoli, MDDuncanville, TX 751161760417026
- Vincent Barr, MDDesoto, TX 751151013028364
- George Jenkins, MDDesoto, TX 751151821032731
- Vishu Lammata, M.D.Desoto, TX 751151811181134
- Abdul Rashid, MDDesoto, TX 751151821288085
- Eron Crouch, MDCorsicana, TX 751101275636532
- Imran Afridi, M.D.Duncanville, TX 751371861459927
- Gaurav Gupta, M.D.Duncanville, TX 751371376745711
Common questions
What is Margaret Mary Sullivan, MD's NPI number?
Margaret Mary Sullivan, MD's National Provider Identifier (NPI) is 1134330178, issued on May 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Mary Sullivan, MD located?
The NPPES record lists a practice address at 802 W Lampasas St, Ennis, TX, 75119. Phone: (972) 875-4700. Providers update this record themselves, so call before visiting.
How can I verify Margaret Mary Sullivan, MD's license?
NPPES lists Texas license number N5421, 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 Margaret Mary Sullivan, MD prescribe under Medicare Part D?
In 2024, Margaret Mary Sullivan, MD had 4,107 Medicare Part D claims for 394 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Margaret Mary Sullivan, MD's MIPS final score?
The 2023 MIPS final score is 98 of 100. 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.