Ronald L Maag, M.D.
Cardiovascular Disease · Houston, TX
At a glance
7200 Cambridge St Fl 6, Houston, TX 77030-4202
NPPES record updated Aug 15, 2022. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
7200 Cambridge St Fl 6Houston, TX 77030-4202
Additional reported practice locations
500 University DrHershey, PA 170332360
Phone: 7175318407
Fax: 7175314077
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2011
- CMS specialties
- Cardiovascular Disease (Cardiology) · Critical Care (Intensivists) · Internal Medicine
Practice groups
Reported hospital affiliations
- Baylor St Lukes Medical Center Houston, TX
- Chi St Lukes Health Memorial Lufkin Lufkin, TX
- Memorial Hermann - Texas Medical Center Houston, TX
- St Luke's The Woodlands Hospital The Woodlands, TX
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $56.61 |
Reporting companies
| Company | Amount |
|---|---|
| NOVARTIS PHARMACEUTICALS CORPORATION | $22.10 |
| E.R. SQUIBB & SONS, L.L.C. | $17.86 |
| BOEHRINGER INGELHEIM PHARMACEUTICALS, INC. | $16.65 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Cardiovascular Disease
- Taxonomy code
- 207RC0000X
- Enumeration date
- Jun 6, 2011
- Record updated
- Aug 15, 2022
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207R00000X
License reported: MT199959 PA
207RC0000X
License reported: MD454678 PA
207RC0200X
License reported: R6435 TX
207RC0000X · Primary
License reported: R6435 TX
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
7200 Cambridge St Fl 6Houston, TX 77030-4202
- Phone
- (713) 798-2545
Mailing address
7200 CAMBRIDGE ST FL 6HOUSTON, TX 770304202
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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