Quick answers
- Does Teresa M. Grillo accept Medicare assignment?
- Yes. Medicare's clinician data says Teresa M. Grillo 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 Teresa M. Grillo see?
- In 2024, CMS data shows 638 Original Medicare patients and 1,577 services for Teresa M. Grillo. This counts Original Medicare only and measures volume, not quality.
- What is Teresa M. Grillo's NPI number?
- 1134234735. 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 Teresa M. Grillo, 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 | 638 |
|---|---|
| Services billed to Medicare | 1,577 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)851 services
- Residence visit for new patient with moderate level of medical decision making, per day, if using time, at least 60 minutes (99344)218 services
- Photography of the retina (92250)179 services
- Exam of visual field with intermediate testing (92082)104 services
- Closure of tear duct opening using plug (68761)74 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 cholesterol74%
- Depression51%
- Diabetes48%
- Anxiety45%
- Alzheimer's disease or dementia37%
Practice locations
Addresses where Teresa M. Grillo is enrolled with Medicare (CMS data updated October 2, 2026).
- 1190 Winterson Rd, Suite 200Linthicum Heights, MD 21090 (443) 204‑3939
- 16701 Melford Blvd, Suite 400Bowie, MD 20715 (443) 204‑3939
Specialties
- Optometryprimary
Other optometrists in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Pennsylvania College Of Optometry |
| Graduation year | 1996 (30 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134234735 |
| 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