John Bierly, MD
NPI 1831193515 · Ophthalmology Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Bierly, MD is a Ophthalmology Physician provider in Chattanooga, TN (NPI 1831193515).
Provider details
- NPI number
- 1831193515
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G70314 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 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
1,687 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) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 932 | $426 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 518 | $28 |
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 173 | $261 |
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 64 | $268 |
Typical Medicare-allowed amounts for these services range $28–$426 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,378 across 28 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
- 2005-06-09
- Last updated
- 2020-04-28
- Certified
- 2020-04-28
Frequently asked questions
- What is John Bierly's NPI number?
- John Bierly's National Provider Identifier (NPI) is 1831193515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Bierly's specialty?
- John Bierly is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Bierly located?
- John Bierly's practice location on file with NPPES is 7268 Jarnigan Rd, Chattanooga, TN 37421-3097.
- What is John Bierly's phone number?
- The practice phone number listed in the NPPES registry for John Bierly is (423) 508-7337.
- Does John Bierly accept Medicare?
- John Bierly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Bierly's NPI active?
- Yes — John Bierly's NPI (1831193515) is active in the NPPES registry as of the last update on 2020-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.