Quick answers
- Does Christina H. Tierney accept Medicare assignment?
- Yes. Medicare's clinician data says Christina H. Tierney 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 Christina H. Tierney see?
- In 2024, CMS data shows 46 Original Medicare patients and 147 services for Christina H. Tierney. This counts Original Medicare only and measures volume, not quality.
- What is Christina H. Tierney's NPI number?
- 1700229937. 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 Christina H. Tierney, 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 | 46 |
|---|---|
| Services billed to Medicare | 147 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Detection test by nucleic acid for human papillomavirus (hpv), high-risk types (87624)14 services
- Screening cytopathology, cervical or vaginal (any reporting system), collected in preservative fluid, automated thin layer preparation, with screening by automated system and manual rescreening under physician supervision (G0145)11 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 cholesterol70%
- High blood pressure54%
- Anxiety43%
- Arthritis39%
- Depression37%
- Osteoporosis35%
Practice locations
Addresses where Christina H. Tierney is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 2nd AveNeedham, MA 02494 (781) 726‑4800
- 133 Brookline AveBoston, MA 02215 (617) 421‑1000
- 20 Wall StBurlington, MA 01803 (781) 221‑2500
Group practices
Medicare enrollment lists Christina H. Tierney as a member of this group (CMS data updated October 2, 2026).
- Atrius Health Inc1,222 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Needham
Clinicians with the same Medicare primary specialty in Needham, MA — not a recommendation.
Other clinicians in Atrius Health Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700229937 |
| 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