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Edit this profileAt a glance
- 15005 Shady Grove Rd., Ste 100, Rockville, MD 20850
About Dr. Allen
Shannen K. Allen, MD is a healthcare provider in Rockville, MD specializing in ophthalmology. Shannen trained at Johns Hopkins University School of Medicine, graduating in 2002. According to Medicare claims data, Shannen cared for 1,547 Medicare patients across 1,819 services. The services billed most often include established patient complete exam of visual system, photography of the retina, and imaging of optic nerve. This provider record is associated with NPI 1407876360.
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
- (301) 279-9696
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
15005 SHADY GROVE RD. STE 100
Rockville, MD 20850
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
1,819 services · 1,547 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient complete exam of visual system | Treatment | 92014 |
951 | More often than most peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
202 | More often than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
196 | More often than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
176 | More often than most peers in Ophthalmology |
| Exam of the internal drainage system of eye | Treatment | 92020 |
175 | More often than most peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
70 | As often as other peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
28 | Less often than most 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 |
21 | 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 2
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 Rockville 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Johns Hopkins University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at Johns Hopkins University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Established patient complete exam of visual system 8
Providers in MD who bill this service to Medicare most often.
Common questions
What is Dr. Allen's specialty?
Dr. Allen is an eye doctor in Rockville, MD. 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. Allen?
Dr. Allen is listed at 15005 Shady Grove Rd. Ste 100, Rockville, MD 20850. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Allen?
The number on file is (301) 279-9696. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Allen's NPI number?
Dr. Allen's National Provider Identifier is 1407876360. 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. Allen's medical education?
Dr. Allen attended Johns Hopkins University School of Medicine, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Allen been practicing?
Dr. Allen has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Allen known for?
According to Medicare billing data, Dr. Allen provides treatments such as established patient complete exam of visual system and photography of the retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Allen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Allen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.