Mark Cullen Grant, D.D.S.
General Practice Dentistry · Houston, TX
Mark Cullen Grant, D.D.S. is a general practice dentistry with a practice address in Houston, Texas, and NPI 1922339050, issued on Jan 29, 2010. Check the license (Texas 0025191, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Cullen Grant
- Credential
- D.D.S.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 0025191 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4613 W Orem Dr, Houston, TX 77045
- Phone
- (713) 433-4333
- Enumerated
- Jan 29, 2010
- Record last updated
- Jan 29, 2010 (not updated in 16 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 10,056 in Texas → Look up another NPI →
Also registered at 4613 W Orem Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Natalie Pruneda, DDSGeneral Practice Dentistry1215826151
Verify Mark Cullen Grant in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 0025191Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% more Medicare Part D claims than the average general practice dentistry in 2024
129 Medicare Part D claims for 54 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Ibuprofen37 claims
- Amoxicillin36 claims
- Dexamethasone32 claims
- Penicillin V Potassium14 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: $19.81
1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
Mark Cullen Grant among 10,056 general practice dentistry records in Texas
Mark Cullen Grant, D.D.S. is one of 10,056 general practice dentistry records with a practice address in Texas. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 56% of them.
- NPI issued2010 · 56% of these records are older, 41% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2010 · 71% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,316 general practice dentistry records list a practice address in Houston
They are 1,316 of the 61,221 NPPES records with a practice address in Houston, and 10,056 general practice dentistry records in Texas.
All 10,056 in Texas → Every provider in Houston → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Lianne Huynh, DDSHouston, TX 770451265583371
- Kathy Nguyen, D.D.S.Houston, TX 770451902119076
- Esther Oluwo, DDSHouston, TX 770451518442581
- Natasha Perschke, DDSHouston, TX 770451508290909
- Anh Pham, DDSHouston, TX 770451699025510
- Natalie Pruneda, DDSHouston, TX 770451215826151
- Jose Wu, DENTISTHouston, TX 770451740544766
- Shawki AbedHouston, TX 770441487271888
Common questions
What is Mark Cullen Grant, D.D.S.'s NPI number?
Mark Cullen Grant, D.D.S.'s National Provider Identifier (NPI) is 1922339050, issued on Jan 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mark Cullen Grant, D.D.S. located?
The NPPES record lists a practice address at 4613 W Orem Dr, Houston, TX, 77045. Phone: (713) 433-4333. Providers update this record themselves, so call before visiting.
How can I verify Mark Cullen Grant, D.D.S.'s license?
NPPES lists Texas license number 0025191, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Cullen Grant, D.D.S. prescribe under Medicare Part D?
In 2024, Mark Cullen Grant, D.D.S. had 129 Medicare Part D claims for 54 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.