Mark G. Castor, DMD, PA
General Practice Dentistry · Cary, NC
Mark G. Castor, DMD, PA is a general practice dentistry with a practice address in Cary, North Carolina, and NPI 1780615476, issued on Jul 5, 2006. Check the license (North Carolina 6103, as entered in NPPES) with the North Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark G. Castor
- Credential
- DMD, PA
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 6103 NC
Self-reported in NPPES; status is on the state search - Practice location
- 140 Preston Executive Dr, Cary, NC 27513
- Phone
- (919) 467-6111
- Enumerated
- Jul 5, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (919) 380-0088
- Medicaid ID
- 8991437 NC
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 3,856 in North Carolina → Look up another NPI →
Also registered at 140 Preston Executive Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Brown, LPCProfessional Counselor1639410400
- Meenal Patel, DMDGeneral Practice Dentistry1295987717
- William Windley, DDS, MSEndodontics1326108135
Verify Mark G. Castor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich North Carolina board licenses this profession
Search for license 6103Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average general practice dentistry in 2024
31 Medicare Part D claims for 26 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin25 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.
Mark G. Castor among 3,856 general practice dentistry records in North Carolina
Mark G. Castor, DMD, PA is one of 3,856 general practice dentistry records with a practice address in North Carolina. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 65% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
109 general practice dentistry records list a practice address in Cary
They are 109 of the 5,665 NPPES records with a practice address in Cary, and 3,856 general practice dentistry records in North Carolina.
All 3,856 in North Carolina → Every provider in Cary → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Gary BeaversCary, NC 275131124041413
- Cynthia Gamble, D.D.S.Cary, NC 275131699919233
- Kavita Ghai, DDSCary, NC 275131841349388
- Lisa Mayes, D.D.SCary, NC 275131497836746
- Joseph Mayes, D.D.SCary, NC 275131437230778
- William McMillan, DMDCary, NC 275131578606984
- Kim Miller, DDSCary, NC 275131437125663
- Meenal Patel, DMDCary, NC 275131295987717
Common questions
What is Mark G. Castor, DMD, PA's NPI number?
Mark G. Castor, DMD, PA's National Provider Identifier (NPI) is 1780615476, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark G. Castor, DMD, PA located?
The NPPES record lists a practice address at 140 Preston Executive Dr, Cary, NC, 27513. Phone: (919) 467-6111. Providers update this record themselves, so call before visiting.
How can I verify Mark G. Castor, DMD, PA's license?
NPPES lists North Carolina license number 6103, as entered by the provider. Search the North Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Mark G. Castor, DMD, PA prescribe under Medicare Part D?
In 2024, Mark G. Castor, DMD, PA had 31 Medicare Part D claims for 26 beneficiaries; the average among general practice dentistry prescribers was 83. 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.