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Edit this profileAt a glance
- 800 Washington St, Boston, MA 02111
About Dr. Callahan
Based in Boston, MA, Alison Callahan, MD is listed in the NPI registry under ophthalmology. Alison graduated from Columbia University College of Physicians and Surgeons in 2010. Medicare claims data shows Alison provided 332 services to 320 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and exam of visual field with limited testing. NPI 1992016059 identifies this record in the national registry.
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
- (617) 636-5000
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
800 WASHINGTON ST
Boston, MA 02111
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
332 services · 320 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of growth of eyelid | Procedure | 67840 |
17 | Less often than most peers in Ophthalmology |
| Probing of nasal tear duct | Procedure | 68840 |
15 | Less often than most peers in Ophthalmology |
| Removal of excessive skin and fat of upper eyelid | Procedure | 15823 |
14 | Less often than most peers in Ophthalmology |
| Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less | Procedure | 11440 |
11 | Less often than most peers in Ophthalmology |
| Exam of visual field with limited testing | Treatment | 92081 |
46 | As often as other peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
20 | Less often than most peers in Ophthalmology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
74 | As often as other peers in Ophthalmology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
48 | Less often than most peers in Ophthalmology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
39 | As often as other peers in Ophthalmology |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
33 | 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.
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 Boston 8
Same specialty, same city.
Trained at Columbia University College of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 2010 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of growth of eyelid 7
Providers in MA who bill this service to Medicare most often.
Common questions
What is Dr. Callahan's specialty?
Dr. Callahan is an eye doctor in Boston, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where can I find Dr. Callahan?
Dr. Callahan is listed at 800 Washington St, Boston, MA 02111. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Callahan?
The number on file is (617) 636-5000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Callahan?
Dr. Callahan's National Provider Identifier is 1992016059. 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
What is Dr. Callahan's medical education?
Dr. Callahan attended Columbia University College of Physicians and Surgeons, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Callahan have?
Dr. Callahan has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Callahan known for?
According to Medicare billing data, Dr. Callahan performs procedures including removal of growth of eyelid, probing of nasal tear duct and removal of excessive skin and fat of upper eyelid; provides treatments such as exam of visual field with limited testing and established patient problem focused exam of visual system, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Callahan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Callahan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.