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Edit this profileAt a glance
- 2855 Gramercy St, Houston, TX 77025
About Merry Ruan
Based in Houston, TX, Merry Z. Ruan is listed in the NPI registry under ophthalmology. Merry graduated from Columbia University College of Physicians and Surgeons in 2019. Medicare claims data shows Merry provided 63 services to 62 patients. The services billed most often include emergency department visit with low level of medical decision making. NPI 1770043473 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
- (713) 668-6828
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
2855 GRAMERCY ST
Houston, TX 77025
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
63 services · 62 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
63 | 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 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
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 — 24 related providers in 3 groups
Other eye doctors in Houston 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.
Class of 2019 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Merry Z. Ruan's specialty?
Merry Z. Ruan is an eye doctor in Houston, TX. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where can I find Merry Z. Ruan?
Merry Z. Ruan is listed at 2855 Gramercy St, Houston, TX 77025. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Merry Z. Ruan?
The number on file is (713) 668-6828. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Merry Z. Ruan?
Merry Z. Ruan's National Provider Identifier is 1770043473. 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 Merry Z. Ruan's education?
Merry Z. Ruan attended Columbia University College of Physicians and Surgeons, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Merry Z. Ruan have?
Merry Z. Ruan has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What is Merry Z. Ruan known for?
According to Medicare billing data, Merry Z. Ruan the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Merry Z. Ruan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Merry Z. Ruan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.