John Dengler, MD
NPI 1396790085 · Sleep Medicine (Psychiatry & Neurology) Physician · Johnson City, TN
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Dengler, MD is a Sleep Medicine (Psychiatry & Neurology) Physician provider in Johnson City, TN (NPI 1396790085).
Provider details
- NPI number
- 1396790085
- Entity type
- Individual
- Primary specialty
- Sleep Medicine (Psychiatry & Neurology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MDO21544 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,181 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 703 | $108 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 169 | $51 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Each Additional Hour96366 | 145 | $17 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 89 | $12 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 28 | $144 |
| Sleep Study Including Heart Rate, Breathing, Airflow, and Effort95806 | 24 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 98 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 372 | 67 |
| Levetiracetam | 354 | 62 |
| Clonazepam | 350 | 48 |
| Lacosamide | 281 | 33 |
| Lamotrigine | 241 | 38 |
| Donepezil Hcl | 182 | 43 |
| Primidone | 174 | 33 |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 164 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,021 across 192 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-23
- Last updated
- 2016-03-08
Frequently asked questions
- What is John Dengler's NPI number?
- John Dengler's National Provider Identifier (NPI) is 1396790085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Dengler's specialty?
- John Dengler is listed in the NPPES registry with a primary specialty of Sleep Medicine (Psychiatry & Neurology) Physician (Allopathic & Osteopathic Physicians).
- Where is John Dengler located?
- John Dengler's practice location on file with NPPES is 1321 Sunset Drive, Johnson City, TN 37604-7902.
- What is John Dengler's phone number?
- The practice phone number listed in the NPPES registry for John Dengler is (423) 928-6174.
- Does John Dengler accept Medicare?
- John Dengler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Dengler's NPI active?
- Yes — John Dengler's NPI (1396790085) is active in the NPPES registry as of the last update on 2016-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.