Physician Profile
Nicholas R. Mahoney, MD
Unclaimed ProfileAbout Dr. Mahoney
Based in Baltimore, MD, Nicholas R. Mahoney, MD is listed in the NPI registry under ophthalmology. Nicholas graduated from Perelman School of Med at the University of Pennsylvania in 2006. Nicholas is also listed as specializing in surgery. According to Medicare claims data, Nicholas cared for 1,034 Medicare patients across 7,774 services. The services billed most often include injection, onabotulinumtoxina, 1 unit, injection, incobotulinumtoxin a, 1 unit, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
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
- (410) 955-1112
- Email not available
Practice Locations
600 N WOLFE ST
Baltimore, MD 21287
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
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
Inflammation, neurologic, and orbit
Retina & vitreous
Procedures & services
Most searched procedures
Examination and imaging
Cataract and lens
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Eyelid, tear duct, and muscle
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
7,774 services · 1,034 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Probing of nasal tear duct | Procedure | 68840 |
71 | More often than most peers in Ophthalmology |
| Injection of chemical for paralysis of nerve muscles on side of face | Procedure | 64612 |
63 | More often than most peers in Ophthalmology |
| Removal of excessive skin and fat of upper eyelid | Procedure | 15823 |
47 | More often than most peers in Ophthalmology |
| Extensive repair of turning-outward eyelid defect | Procedure | 67917 |
46 | More than most peers in Ophthalmology |
| Repair of brow paralysis | Procedure | 67900 |
29 | More often than most peers in Ophthalmology |
| Repair of tendon of upper eyelid | Procedure | 67904 |
27 | As often as other peers in Ophthalmology |
| Probing of nasal tear duct with insertion of tube or stent | Procedure | 68815 |
26 | More often than most peers in Ophthalmology |
| Temporary closure of eyelids by suture | Procedure | 67875 |
20 | As often as other peers in Ophthalmology |
| Full thickness skin graft to nose, ears, eyelids, or lips, 20.0 sq cm or less | Procedure | 15260 |
12 | Less often than most peers in Ophthalmology |
| Preparation of skin graft site of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 100.0 sq cm or 1% body area for infants and children, or less | Procedure | 15004 |
12 | 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 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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 — 29 related providers in 4 groups
Other eye doctors in Baltimore 7
Same specialty, same city.
Trained at Perelman School of Med at the University of Pennsylvania 8
Other providers in the same specialty who trained at the same institution.
Class of 2006 at Perelman School of Med at the University of Pennsylvania 8
Providers who graduated from the same medical school in the same year.
Also performs Probing of nasal tear duct 6
Providers in MD who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Mahoney?
Dr. Mahoney is an eye doctor in Baltimore, MD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Dr. Mahoney's address?
Dr. Mahoney is listed at 600 N Wolfe St, Baltimore, MD 21287. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Mahoney?
The number on file is (410) 955-1112. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Mahoney's NPI number?
Dr. Mahoney's National Provider Identifier is 1194875864. 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 Dr. Mahoney train?
Dr. Mahoney attended Perelman School of Med at the University of Pennsylvania, graduating in 2006. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Mahoney been practicing?
Dr. Mahoney has 20 years experience. Calculated from a graduation year of 2006, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Mahoney perform?
According to Medicare billing data, Dr. Mahoney performs procedures including probing of nasal tear duct, injection of chemical for paralysis of nerve muscles on side of face 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
Has Dr. Mahoney confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mahoney. 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.