Joel Barthelow, M.D.
NPI 1013974625 · Ophthalmology Physician · Chico, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joel Barthelow, M.D. is a Ophthalmology Physician provider in Chico, CA (NPI 1013974625).
Provider details
- NPI number
- 1013974625
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A94358 (CA)
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
8,238 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 Complete Exam of Visual System92014 | 1,901 | $136 |
| Imaging of Retina92134 | 1,651 | $42 |
| Established Patient Problem Focused Exam of Visual System92012 | 860 | $96 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 742 | $50 |
| Imaging of Optic Nerve92133 | 433 | $37 |
| Laser Repair to Improve Eye Fluid Flow65855 | 398 | $260 |
| Photography of the Retina92250 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 319 | 108 |
| Ketorolac Tromethamine | 262 | 193 |
| Azelastine Hcl | 100 | 38 |
| Bimatoprostbrand: Lumigan | 64 | 19 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 39 | 30 |
| Timolol Maleate | 37 | 13 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 36 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,053 across 65 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
- 2006-04-27
- Last updated
- 2022-09-02
- Certified
- 2022-09-02
Frequently asked questions
- What is Joel Barthelow's NPI number?
- Joel Barthelow's National Provider Identifier (NPI) is 1013974625, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joel Barthelow's specialty?
- Joel Barthelow is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Joel Barthelow located?
- Joel Barthelow's practice location on file with NPPES is 1700 Bruce Rd, Chico, CA 95928-7941.
- What is Joel Barthelow's phone number?
- The practice phone number listed in the NPPES registry for Joel Barthelow is (530) 891-1900.
- Does Joel Barthelow accept Medicare?
- Joel Barthelow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joel Barthelow's NPI active?
- Yes — Joel Barthelow's NPI (1013974625) is active in the NPPES registry as of the last update on 2022-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.