Quick answers
- Does Janna Massar accept Medicare assignment?
- Medicare's clinician data says Janna Massar may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Janna Massar see?
- In 2024, CMS data shows 145 Original Medicare patients and 11,093 services for Janna Massar. This counts Original Medicare only and measures volume, not quality.
- What is Janna Massar's NPI number?
- 1972516961. 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 Janna Massar, 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 | 145 |
|---|---|
| Services billed to Medicare | 11,093 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)107 services
- Annual depression screening, 5 to 15 minutes (G0444)106 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)66 services
- Influenza vaccine, trivalent derived from cell cultures (90661)54 services
- Administration of influenza virus vaccine (G0008)51 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 cholesterol68%
- High blood pressure61%
- Arthritis49%
- Diabetes23%
- Chronic kidney disease19%
- Ischemic heart disease18%
Hospitals where Janna Massar works
Medicare's Facility Affiliation Data lists Janna Massar at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Medical Center of McKinneyMcKinney, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450403
- Medical City PlanoPlano, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450651
- Texas Health Presbyterian Hospital PlanoPlano, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450771
Practice locations
Addresses where Janna Massar is enrolled with Medicare (CMS data updated October 2, 2026).
- 2208 Dallas Pkwy, Suite 325c1Plano, TX 75093
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Plano
Clinicians with the same Medicare primary specialty in Plano, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1972516961 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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