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Edit this profileAt a glance
- Medical Center Blvd, Winston Salem, NC 27157
About Dr. Greven
Craig M. Greven, MD is a healthcare provider in Winston Salem, NC specializing in ophthalmology. Craig trained at Wake Forest University School of Medicine, graduating in 1983. Medicare claims data shows Craig provided 1,947 services to 820 patients. The services billed most often include imaging of retina, imaging of retina, and injection of drug into eye. This provider record is associated with NPI 1154304863.
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
- (336) 716-2255
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
MEDICAL CENTER BLVD
Winston Salem, NC 27157
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
1,947 services · 820 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug into eye | Procedure | 67028 |
256 | As often as other peers in Ophthalmology |
| Injection of drug into eye | Procedure | 67028 |
221 | As often as other peers in Ophthalmology |
| 1d and 2d ultrasound scan of eye tissue and structures | Imaging | 76510 |
38 | As often as other peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
433 | More often than most peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
311 | More often than most peers in Ophthalmology |
| Injection, aflibercept, 1 mg | Drug given | J0178 |
150 | Less often than most peers in Ophthalmology |
| Injection, bevacizumab, 10 mg | Drug given | J9035 |
97 | 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 |
198 | More 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 |
91 | More 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 |
82 | As often as other 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 Winston Salem 8
Same specialty, same city.
Trained at Wake Forest University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 1983 at Wake Forest University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug into eye 7
Providers in NC who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Greven?
Dr. Greven is an eye doctor in Winston Salem, NC. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Dr. Greven's address?
Dr. Greven is listed at Medical Center Blvd, Winston Salem, NC 27157. 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. Greven?
The number on file is (336) 716-2255. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Greven?
Dr. Greven's National Provider Identifier is 1154304863. 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. Greven train?
Dr. Greven attended Wake Forest University School of Medicine, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Greven have?
Dr. Greven has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Greven perform?
According to Medicare billing data, Dr. Greven performs procedures including injection of drug into eye; reads or performs imaging such as 1d and 2d ultrasound scan of eye tissue and structures; provides treatments such as imaging of retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Greven's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Greven. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.