Charles Bahn, M.D.
NPI 1609834654 · Ophthalmology Physician · Bethesda, MD
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Bahn, M.D. is a Ophthalmology Physician provider in Bethesda, MD (NPI 1609834654).
Provider details
- NPI number
- 1609834654
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- D0031521 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,865 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 799 | $146 |
| Established Patient Problem Focused Exam of Visual System92012 | 717 | $104 |
| Exam of Visual Field With Extended Testing92083 | 128 | $74 |
| Imaging of Optic Nerve92133 | 86 | $39 |
| Imaging of Retina92134 | 58 | $46 |
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 34 | $389 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 164 | 33 |
| Erythromycin Basebrand: Erythromycin | 98 | 64 |
| Timolol Maleate | 64 | 19 |
| Brinzolamide | 43 | 12 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 40 | 35 |
| Prednisolone Acetate | 29 | 27 |
| Cyclosporinebrand: Restasis | 29 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-01
- Last updated
- 2007-07-09
Frequently asked questions
- What is Charles Bahn's NPI number?
- Charles Bahn's National Provider Identifier (NPI) is 1609834654, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Bahn's specialty?
- Charles Bahn is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Bahn located?
- Charles Bahn's practice location on file with NPPES is 4848 Battery Ln, Bethesda, MD 20814-2709.
- What is Charles Bahn's phone number?
- The practice phone number listed in the NPPES registry for Charles Bahn is (301) 657-3022.
- Does Charles Bahn accept Medicare?
- Charles Bahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Bahn's NPI active?
- Yes — Charles Bahn's NPI (1609834654) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.