Robert Geier
NPI 1336673102 · Endocrinology, Diabetes & Metabolism Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Geier is a Endocrinology, Diabetes & Metabolism Physician provider in Knoxville, TN (NPI 1336673102).
Provider details
- NPI number
- 1336673102
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 4716 (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
9 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
2,772 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 488 | $9 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 350 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 291 | $83 |
| Thyroxine (thyroid Chemical), Free84439 | 238 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 220 | $10 |
| Parathormone (parathyroid Hormone) Level83970 | 147 | $40 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 662 | 150 |
| Semaglutidebrand: Ozempic | 60 | — |
| Methimazole | 52 | 15 |
| Atorvastatin Calcium | 48 | 18 |
| Rosuvastatin Calcium | 48 | 11 |
| Hydrocortisone | 48 | 16 |
| Metformin Hclbrand: Metformin Hcl Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,108 across 59 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
- 2017-04-18
- Last updated
- 2024-08-16
- Certified
- 2024-08-16
Frequently asked questions
- What is Robert Geier's NPI number?
- Robert Geier's National Provider Identifier (NPI) is 1336673102, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Geier's specialty?
- Robert Geier is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Geier located?
- Robert Geier's practice location on file with NPPES is 1450 Dowell Springs Blvd Ste 300, Knoxville, TN 37909-2444.
- What is Robert Geier's phone number?
- The practice phone number listed in the NPPES registry for Robert Geier is (656) 378-8128.
- Does Robert Geier accept Medicare?
- Robert Geier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Geier's NPI active?
- Yes — Robert Geier's NPI (1336673102) is active in the NPPES registry as of the last update on 2024-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.