Craig Michael Greven, MD
Ophthalmology Physician · Winston Salem, NC
Craig Michael Greven, MD is an ophthalmology physician with a practice address in Winston Salem, North Carolina, and NPI 1154304863, issued on Nov 28, 2005. Check the license (North Carolina 28497, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Craig Michael Greven
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 28497 NC
Self-reported in NPPES; status is on the state search - Practice location
- Medical Center Blvd, Winston Salem, NC 27157
- Phone
- (336) 716-2255
- Enumerated
- Nov 28, 2005
- Record last updated
- Aug 20, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (336) 716-7994
- Medicaid IDs
- 6330207 VA
Q28497 SC
195723000 WV
7937201 NC - Medicare enrollment
- Enrolled (PECOS I20060127000810); accepts Medicare assignment
- Medical or professional school
- Wake Forest University School Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 688 in North Carolina → Look up another NPI →
Also registered at Medical Center Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Craig Michael Greven in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 28497Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average ophthalmology physician in 2024
151 Medicare Part D claims for 50 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Prednisolone Acetate36 claims
- Timolol Maleate23 claims
- Latanoprost22 claims
- Ketorolac Tromethamine21 claims
- Dorzolamide-Timolol15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $585.87
4 payments; by number, the most common kind was food and beverage; the largest payer was Genentech, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Wake Forest University Health SciencesGreensboro, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Craig Michael Greven among 688 ophthalmology physician records in North Carolina
Craig Michael Greven, MD is one of 688 ophthalmology physician records with a practice address in North Carolina. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 82% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1983 · median 2004 among the 463 with a school on file
- Record last updated2010 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in North Carolina
There are 688 ophthalmology physician records in North Carolina.
All 688 in North Carolina → Every provider in Winston Salem → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Chandra Altemare, MDWinston Salem, NC 271571972562577
- Jeffrey Bond, MDWinston Salem, NC 271571902889603
- Dean Bonsall, M.D.Winston Salem, NC 271571326071648
- Susan Burden, MDWinston Salem, NC 271571528041225
- Michael Clamp, M.D.Winston Salem, NC 271571952621211
- Paul Dickinson, MDWinston Salem, NC 271571245213958
- Matthew Giegengack, MDWinston Salem, NC 271571437167350
- Vishak John, M.D.Winston Salem, NC 271571255515623
Common questions
What is Craig Michael Greven, MD's NPI number?
Craig Michael Greven, MD's National Provider Identifier (NPI) is 1154304863, issued on Nov 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Craig Michael Greven, MD located?
The NPPES record lists a practice address at Medical Center Blvd, Winston Salem, NC, 27157. Phone: (336) 716-2255. Providers update this record themselves, so call before visiting.
How can I verify Craig Michael Greven, MD's license?
NPPES lists North Carolina license number 28497, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Craig Michael Greven, MD prescribe under Medicare Part D?
In 2024, Craig Michael Greven, MD had 151 Medicare Part D claims for 50 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.