Dr. Timothy McDonnell, M.D., PHD
What this data tells you about Dr. McDonnell
Dr. Timothy McDonnell is an anatomic pathology physician in Houston, TX, with 19 years of NPI registration. Based on federal Medicare data, Dr. McDonnell performed 2,324 Medicare services in 2023. These records do not provide a deduplicated patient total.
The Data Coverage level for Dr. McDonnell is High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary — 2023
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Tissue pathology examination, moderate complexity A laboratory test where a pathologist examines tissue samples under a microscope to analyze cellular details. This intermediate complexity procedure involves specialized techniques to identify abnormalities in the tissue. |
718 | $29 | $356 |
| Bone marrow smear interpretation A laboratory review of a bone marrow sample slide to examine cell structure and identify abnormalities. |
365 | $37 | $380 |
| Tissue staining for diagnosis, additional An extra laboratory procedure to apply special stains to tissue slides for detailed examination. |
340 | $22 | $197 |
| Tissue preparation to remove calcium A laboratory procedure that removes calcium from a tissue sample to prepare it for microscopic examination. |
330 | $10 | $117 |
| Special tissue stain and interpretation A laboratory test using special stains to examine tissue samples, including the pathologist's review and written report of the findings. |
172 | $9 | $128 |
| Tissue staining for diagnosis, initial A laboratory test where special stains are applied to tissue slides to help examine the cells and identify specific characteristics. |
165 | $27 | $251 |
| Flow cytometry, 16 or more markers A laboratory test that uses lasers to analyze cells or DNA using 16 or more different markers. This technique helps identify and characterize specific cell types based on their physical and chemical properties. |
68 | $66 | $2,138 |
| Surgical pathology consultation on referred slides A pathologist reviews and reports on tissue slides that were prepared at another facility. This service provides a second opinion or expert analysis of the existing samples. |
40 | $61 | $321 |
| Flow cytometry, 2-8 markers A laboratory test that uses lasers to analyze cells or DNA using 2 to 8 specific markers. This technique helps identify and characterize cells based on their physical and chemical properties. |
36 | $28 | $488 |
| Manual microscopic genetic analysis of tumor A laboratory test that uses a microscope to manually examine tumor tissue for genetic changes. |
31 | $31 | $344 |
| Flow cytometry DNA or cell analysis, 9-15 markers A laboratory test that uses a laser to analyze cells or DNA using 9 to 15 different markers. This technique helps identify and characterize specific cell types or genetic material. |
26 | $47 | $1,212 |
| Specimen enzyme evaluation Laboratory testing to measure the activity of enzymes within a biological specimen. |
17 | $21 | $295 |
| Special tissue stain, multiplex A laboratory procedure using special stains to examine tissue samples. This multiplex technique allows for the analysis of multiple markers on a single slide. |
16 | $30 | $360 |
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | — No payments | N/A |
| Disciplinary History | — Not included | N/A |
This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. McDonnell is a mixed practice specialist, with above-average Medicare volume (top 12% in TX), with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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