Charles Whisler, MD
NPI 1073516597 · Ophthalmology Physician · Monterey, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Whisler, MD is a Ophthalmology Physician provider in Monterey, CA (NPI 1073516597).
Provider details
- NPI number
- 1073516597
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A90232 (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
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,779 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 | 1,064 | $137 |
| Established Patient Problem Focused Exam of Visual System92012 | 478 | $97 |
| Exam of Visual Field With Extended Testing92083 | 245 | $42 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 204 | $96 |
| Imaging of Optic Nerve92133 | 177 | $39 |
| Photography of the Retina92250 | 168 | $40 |
| Removal of Cataract With Insertion of Prosthetic Lens |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 210 | 135 |
| Latanoprost | 201 | 51 |
| Moxifloxacin Hclbrand: Moxifloxacin | 172 | 98 |
| Bromfenac Sodium | 98 | 58 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 83 | 60 |
| Timolol Maleate | 61 | 22 |
| Bimatoprostbrand: Lumigan | 53 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$325 across 4 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
Additional practice locations (1)
- 622 Abbott StSalinas, CA 93901-4315Phone: (831) 771-3900Fax: (831) 424-7835
Registry dates
- Enumerated
- 2005-05-30
- Last updated
- 2023-05-17
- Certified
- 2023-05-17
Frequently asked questions
- What is Charles Whisler's NPI number?
- Charles Whisler's National Provider Identifier (NPI) is 1073516597, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Whisler's specialty?
- Charles Whisler is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Whisler located?
- Charles Whisler's practice location on file with NPPES is 966 Cass St, Monterey, CA 93940-4539.
- What is Charles Whisler's phone number?
- The practice phone number listed in the NPPES registry for Charles Whisler is (831) 373-7733.
- Does Charles Whisler accept Medicare?
- Charles Whisler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Whisler's NPI active?
- Yes — Charles Whisler's NPI (1073516597) is active in the NPPES registry as of the last update on 2023-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.