Quick answers
- Does John M. Fahrenholz accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Fahrenholz 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 John M. Fahrenholz see?
- In 2024, CMS data shows 108 Original Medicare patients and 3,458 services for John M. Fahrenholz. This counts Original Medicare only and measures volume, not quality.
- What is John M. Fahrenholz's NPI number?
- 1518958370. 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 John M. Fahrenholz, 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 | 108 |
|---|---|
| Services billed to Medicare | 3,458 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)55 services
- Professional service for multiple injections of allergen (95117)39 services
- Test to measure expiratory airflow and volume (94010)13 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 pressure69%
- High cholesterol66%
- Arthritis55%
- Asthma44%
- Depression30%
- Ischemic heart disease28%
Hospitals where John M. Fahrenholz works
Medicare's Facility Affiliation Data lists John M. Fahrenholz 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.
- Vanderbilt University Medical CenterNashville, TN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 440039
Practice locations
Addresses where John M. Fahrenholz is enrolled with Medicare (CMS data updated October 2, 2026).
- 1301 22nd Ave SNashville, TN 37232 (615) 322‑3000
- 3601 the Vanderbilt ClinicNashville, TN 37232 (615) 322‑3000
Group practices
Medicare enrollment lists John M. Fahrenholz as a member of this group (CMS data updated October 2, 2026).
- Vanderbilt University Medical Center3,567 clinicians in the group
Specialties
- Allergy/Immunologyprimary
- Internal Medicinealso
Other allergist and immunologists in Nashville
Clinicians with the same Medicare primary specialty in Nashville, TN — not a recommendation.
Other clinicians in Vanderbilt University Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1518958370 |
| 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