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Edit this profileAt a glance
- 360 Middletown Blvd Ste 402, Langhorne, PA 19047
About Dr. Machen
Lindsay A. Machen, M.D. is a healthcare provider in Langhorne, PA specializing in ophthalmology. Lindsay trained at Pennsylvania State University College of Medicine, graduating in 2015. Lindsay is also listed as specializing in ophthalmology — glaucoma. According to Medicare claims data, Lindsay cared for 2,172 Medicare patients across 2,664 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, exam of visual field with extended testing, and imaging of optic nerve. This provider record is associated with NPI 1649667452.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (215) 757-6200
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
360 MIDDLETOWN BLVD STE 402
Langhorne, PA 19047
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
Eye injury and cancer
Inflammation, neurologic, and orbit
Most searched conditions
Cornea and external eye
Eyelid and tear drainage
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
Eye injuries
Retina & vitreous
Procedures & services
Cataract and lens
- Cataract surgery with lens implant
- Laser-assisted cataract surgery
- Intraocular lens exchange
- YAG laser capsulotomy
Cornea and refractive
Emergency and minor
- Corneal rust-ring removal
- Removal of an eye foreign body
- Repair of an eye or eyelid laceration
- Repair of ruptured globe
Examination and imaging
- Eye ultrasound
- Slit-lamp examination
- Visual-field testing
- Corneal topography
- Fluorescein angiography
Eyelid, tear duct, and muscle
- Chalazion removal
- Ectropion repair
- Eyelid surgery
- Tear-duct probing
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Tear-duct bypass surgery
Glaucoma
- Cyclophotocoagulation
- Trabeculectomy
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Retina
Most searched procedures
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
2,664 services · 2,172 patients · 17 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
125 | As often as other peers in Ophthalmology |
| Laser repair to improve eye fluid flow | Procedure | 65855 |
64 | More often than most peers in Ophthalmology |
| Creation of eye fluid drainage tract for treatment of glaucoma | Procedure | 66170 |
19 | As often as other peers in Ophthalmology |
| Incision to improve eye fluid flow | Procedure | 65820 |
19 | Less often than most peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
74 | More often than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
361 | More often than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
316 | More often than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
204 | As often as other peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
166 | As often as other peers in Ophthalmology |
| Exam of the internal drainage system of eye | Treatment | 92020 |
147 | More 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 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 27 related providers in 4 groups
Other eye doctors in Langhorne 4
Same specialty, same city.
Trained at Pennsylvania State University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at Pennsylvania State University College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 7
Providers in PA who bill this service to Medicare most often.
Common questions
What kind of doctor is Lindsay A. Machen?
Lindsay A. Machen is an eye doctor in Langhorne, PA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Lindsay A. Machen's address?
Lindsay A. Machen is listed at 360 Middletown Blvd Ste 402, Langhorne, PA 19047. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Lindsay A. Machen?
The number on file is (215) 757-6200. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Lindsay A. Machen's NPI number?
Lindsay A. Machen's National Provider Identifier is 1649667452. 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 Lindsay A. Machen train?
Lindsay A. Machen attended Pennsylvania State University College of Medicine, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How long has Lindsay A. Machen been practicing?
Lindsay A. Machen has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What procedures does Lindsay A. Machen perform?
According to Medicare billing data, Lindsay A. Machen performs procedures including removal of cataract with insertion of prosthetic lens, laser repair to improve eye fluid flow and creation of eye fluid drainage tract for treatment of glaucoma; reads or performs imaging such as ultrasound scan of cornea to determine thickness; provides treatments such as exam of visual field with extended testing and imaging of optic nerve, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Lindsay A. Machen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Lindsay A. Machen. If this is you, claiming it is free.
Guide.md
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