Physician Profile
Curtis L. Frewin, M.D.
Unclaimed ProfileAbout Dr. Frewin
Based in Billings, MT, Curtis L. Frewin, M.D. is listed in the NPI registry under ophthalmology. According to Medicare claims data, Curtis cared for 1,310 Medicare patients across 2,239 services. The services billed most often include imaging of retina, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and measurement of corneal curvature and depth of eye.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (406) 238-2500
- Email not available
Practice Locations
801 N 29TH ST
Billings, MT 59101
Conditions Commonly Evaluated or Treated
Within Ophthalmology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Cataracts
- Diabetic retinopathy
- Dry eye
- Glaucoma
- Macular degeneration
Cornea and external eye
- Blepharitis
- Corneal abrasion
- Corneal ulcer
- Keratoconus
- Pink eye
- Pterygium
Eyelid and tear drainage
- Blocked tear duct
- Chalazion
- Drooping eyelid
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
- Epiretinal membrane
- Retinal detachment
Eye injuries
- Foreign Object in Eye
Inflammation, neurologic, and orbit
- Thyroid eye disease
- Uveitis
Retina & vitreous
- Eye Floaters and Flashes
Procedures & services
Most searched procedures
- Cataract surgery
- Eye exam
- LASIK
- Retina surgery
Examination and imaging
- Corneal topography
- Fluorescein angiography
Cataract and lens
- Intraocular lens exchange
- YAG laser capsulotomy
Corneal procedures
- Amniotic Membrane Eye Graft
Eye diagnostics
- Optical Coherence Tomography Scan
Eye injuries
- Eye Scratch Laceration Repair
- Foreign Object Removal from Eye
Eyelid surgery
- Stye Removal
Eyelid, tear duct, and muscle
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Eyelid surgery
- Tear-duct bypass surgery
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Laser eye surgery
- Laser Floater Removal
Laser procedures
- Laser Treatment for Retinal Tear
Laser vision correction
- SMILE Eye Surgery
Refractive surgery
- Clear Lens Exchange
- Implantable Contact Lenses
Tear duct & Orbit
- Orbital Decompression Surgery
- Tear Duct Plugs
Procedures Most Often Billed to Medicare
2,239 services · 1,310 patients · 20 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
226 | More often than most peers in Ophthalmology |
| Injection of drug into eye | Procedure | 67028 |
183 | As often as other peers in Ophthalmology |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
25 | As often as other peers in Ophthalmology |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
20 | Less often than most peers in Ophthalmology |
| Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye | Procedure | 66991 |
17 | Less often than most peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
389 | More often than most peers in Ophthalmology |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
254 | More often than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
142 | As often as other peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
89 | As often as other peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
34 | Less often than most peers in Ophthalmology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other eye doctors at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other eye doctors in Billings 5
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in MT who bill this service to Medicare most often.
Common questions
What kind of doctor is Curtis L. Frewin?
Curtis L. Frewin is an eye doctor in Billings, MT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Curtis L. Frewin's address?
Curtis L. Frewin is listed at 801 N 29Th St, Billings, MT 59101. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Curtis L. Frewin?
The number on file is (406) 238-2500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Curtis L. Frewin's NPI number?
Curtis L. Frewin's National Provider Identifier is 1790977262. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Curtis L. Frewin train?
Curtis L. Frewin attended Other, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has Curtis L. Frewin been practicing?
Curtis L. Frewin has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What procedures does Curtis L. Frewin perform?
According to Medicare billing data, Curtis L. Frewin performs procedures including removal of cataract with insertion of prosthetic lens, injection of drug into eye and complex removal of cataract with insertion of prosthetic lens; provides treatments such as imaging of retina and measurement of corneal curvature and depth of eye, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Curtis L. Frewin confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Curtis L. Frewin. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.