Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mary Lim, DO

Individual provider Cardiovascular Disease Physician · NPI 1750637344

Mary Lim, DO practises Cardiac Electrophysiology in Humble, Texas. Qualified in 2011, 15 years ago. Practices with Cardiovascular Association, PLLC, a 52-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
15
Licensed in
TX
In the registry since
2012
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

18450 Highway 59 N
Humble, TX 77338-4404
Phone: (281) 446-3665
Fax: (281) 446-6657
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 10930 Resource Pkwy Ste A, Houston, TX 77089-6157 — (281) 661-5767
  • 10907 Memorial Hermann Dr Ste 400, Pearland, TX 77584-4115 — (281) 740-0280

Specialties & licences

Clinical Cardiac Electrophysiology Physician (primary) Taxonomy 207RC0001X · Licence P8595 (TX)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence P8595 (TX)

Record details

NPI number1750637344
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 1, 2012
Last updated in NPPESOctober 8, 2026
Certification dateOctober 8, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIAC ELECTROPHYSIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Cardiovascular Association, P.L.L.C. — 52 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Pacemaker insertion or repair 69 times · 95th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients196
Services billed 1,136 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $3,401 106 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $1,371 3 payments · travel or lodging paid or reimbursed, such as to attend a conference

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Cardiovascular Association, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 52 clinicians in the practice; 12 are shown here.

Other providers in Humble