Quick answers
- Does Olivia M. Granillo Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Olivia M. Granillo Johnson 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 Olivia M. Granillo Johnson see?
- In 2024, CMS data shows 68 Original Medicare patients and 127 services for Olivia M. Granillo Johnson. This counts Original Medicare only and measures volume, not quality.
- What is Olivia M. Granillo Johnson's NPI number?
- 1437316106. 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 Olivia M. Granillo Johnson, 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 | 68 |
|---|---|
| Services billed to Medicare | 127 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)59 services
- Hospital discharge day management, more than 30 minutes (99239)33 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)23 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%
- Arthritis56%
- Anxiety54%
- Diabetes49%
- Ischemic heart disease44%
Hospitals where Olivia M. Granillo Johnson works
Medicare's Facility Affiliation Data lists Olivia M. Granillo Johnson 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.
- Saint Thomas Rutherford HospitalMurfreesboro, TN · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 440053
Practice locations
Addresses where Olivia M. Granillo Johnson is enrolled with Medicare (CMS data updated October 2, 2026).
- 1700 Medical Ctr PkwyMurfreesboro, TN 37129 (615) 396‑4100
Group practices
Medicare enrollment lists Olivia M. Granillo Johnson as a member of this group (CMS data updated October 2, 2026).
- Havely Springs Physician Services PC64 clinicians in the group
Specialties
- Internal Medicineprimary
- Pediatric Medicinealso
Other internal medicine doctors in Murfreesboro
Clinicians with the same Medicare primary specialty in Murfreesboro, TN — not a recommendation.
Other clinicians in Havely Springs Physician Services PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Duke University School Of Medicine |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437316106 |
| 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