Mark W. Greenwell, M.D.
Nephrology Physician · Paris, TX
Mark W. Greenwell, M.D. is a nephrology physician with a practice address in Paris, Texas, and NPI 1184681371, issued on May 1, 2006. Check the license (Texas P3725, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark W. Greenwell
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- P3725 TX
29498 OK
Self-reported in NPPES; status is on the state search - Practice location
- 635 Stone Ave, Paris, TX 75460
- Phone
- (903) 785-3300
- Enumerated
- May 1, 2006
- Record last updated
- Apr 20, 2023
- Fax
- (903) 785-3310
- Medicaid IDs
- 200452580 A OK
3058059-01 TX - Medicare enrollment
- Enrolled (PECOS I20120906000268); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 1,159 in Texas → Look up another NPI →
Also registered at 635 Stone Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Elmore, RN, MSN, FNP-BCFamily Nurse Practitioner1447776539
- Paula Gaston, NP-CFamily Nurse Practitioner1720363344
- Nikki Johnston, APRN, FNP-BCNurse Practitioner1528593472
- Amy Jolley, ANPAdult Health Nurse Practitioner1083983316
- Danise Petticrew, RN, FNP-CFamily Nurse Practitioner1952359200
Verify Mark W. Greenwell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P3725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% more Medicare Part D claims than the average nephrology physician in 2024
2,807 Medicare Part D claims for 460 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. 36 claims were for opioids.
Most prescribed
- Jardiance174 claims
- Losartan Potassium167 claims
- Farxiga137 claims
- Amlodipine Besylate129 claims
- Lisinopril118 claims
- Furosemide114 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: $23.12
1 payment: food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Tyler Nephrology Associates PAParis, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark W. Greenwell among 1,159 nephrology physician records in Texas
Mark W. Greenwell, M.D. is one of 1,159 nephrology physician records with a practice address in Texas. 89% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 53% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated1999 · median 2001 among the 954 with a school on file
- Record last updated2023 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Texas
There are 1,159 nephrology physician records in Texas.
All 1,159 in Texas → Every provider in Paris → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Armando Aponte Velez, MDParis, TX 754601205261781
- Esther Iheukwumere, M.DParis, TX 754601598999062
- Samad Jabbar, MDParis, TX 754601841492618
- Hussain Haideri, M.D.Mt Pleasant, TX 754551063470052
- Mohammad Shafi, M.D.Mount Pleasant, TX 754551831197433
- Muazer Ahmed, M.DTexarkana, TX 755031891113577
- Hayden Hemphill, MDTexarkana, TX 755031396746376
- Robert Leach, MDTexarkana, TX 755031114910411
Common questions
What is Mark W. Greenwell, M.D.'s NPI number?
Mark W. Greenwell, M.D.'s National Provider Identifier (NPI) is 1184681371, issued on May 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark W. Greenwell, M.D. located?
The NPPES record lists a practice address at 635 Stone Ave, Paris, TX, 75460. Phone: (903) 785-3300. Providers update this record themselves, so call before visiting.
How can I verify Mark W. Greenwell, M.D.'s license?
NPPES lists Texas license number P3725, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark W. Greenwell, M.D. prescribe under Medicare Part D?
In 2024, Mark W. Greenwell, M.D. had 2,807 Medicare Part D claims for 460 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.