Quick answers
- Does Rolf Montalvo Chen accept Medicare assignment?
- Yes. Medicare's clinician data says Rolf Montalvo Chen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Rolf Montalvo Chen see?
- In 2024, CMS data shows 96 Original Medicare patients and 137 services for Rolf Montalvo Chen. This counts Original Medicare only and measures volume, not quality.
- What is Rolf Montalvo Chen's NPI number?
- 1811006539. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Rolf Montalvo Chen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 96 |
|---|---|
| Services billed to Medicare | 137 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)63 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)23 services
- Automated urinalysis test (81003)12 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis43%
- Anxiety32%
- Ischemic heart disease30%
- Diabetes29%
Practice locations
Addresses where Rolf Montalvo Chen is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 12; the Medicare profile lists all.
- 10300 Louetta Rd, Suite 120Houston, TX 77070 (346) 236‑1082
- 12740 Memorial DrHouston, TX 77024 (832) 658‑3110
- 1505 E Winding Way Dr, Suite 112 Memorial Hermann Gohealth UCFriendswood, TX 77546 (281) 993‑3860
- 1911 Taylor St, Suite EHouston, TX 77007 (346) 327‑8553
- 20022 Southwest FwySugar Land, TX 77479 (346) 521‑3628
Group practices
Medicare enrollment lists Rolf Montalvo Chen as a member of this group (CMS data updated October 2, 2026).
- Memorial Hermann Urgent Care PLLC113 clinicians in the group
Specialties
- Family Practiceprimary
- Emergency Medicinealso
Other family doctors in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Other clinicians in Memorial Hermann Urgent Care PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811006539 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians