Tchad Griffin, M.D.
NPI 1306930813 · Family Medicine Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tchad Griffin, M.D. is a Family Medicine Physician provider in Knoxville, TN (NPI 1306930813).
Provider details
- NPI number
- 1306930813
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD024124 (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
19 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
376 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 318 | $82 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 25 | $8 |
| Automated Urinalysis Test81003 | 17 | $2 |
| Administration of Influenza Virus VaccineG0008 | 16 | $30 |
Typical Medicare-allowed amounts for these services range $2–$82 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 166 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 369 | 94 |
| Gabapentin | 368 | 61 |
| Levothyroxine Sodium | 349 | 80 |
| Pantoprazole Sodium | 316 | 80 |
| Atorvastatin Calcium | 288 | 77 |
| Alprazolam | 264 | 29 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,489 across 80 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
- 2006-10-02
- Last updated
- 2015-02-03
Frequently asked questions
- What is Tchad Griffin's NPI number?
- Tchad Griffin's National Provider Identifier (NPI) is 1306930813, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tchad Griffin's specialty?
- Tchad Griffin is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tchad Griffin located?
- Tchad Griffin's practice location on file with NPPES is 4824 Washington Pike, Knoxville, TN 37917-2156.
- What is Tchad Griffin's phone number?
- The practice phone number listed in the NPPES registry for Tchad Griffin is (865) 637-4970.
- Does Tchad Griffin accept Medicare?
- Tchad Griffin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tchad Griffin's NPI active?
- Yes — Tchad Griffin's NPI (1306930813) is active in the NPPES registry as of the last update on 2015-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.