Mark W Greenwell, MD - Medicare Nephrology in Paris, TX

Mark W Greenwell, MD is a medicare enrolled "Internal Medicine - Nephrology" physician in Paris, Texas. He went to University Of Texas Medical School At Houston and graduated in 1999 and has 25 years of diverse experience with area of expertise as Nephrology. He is a member of the group practice Tyler Nephrology Associates Pa, Tyler Nephrology Associates Pa and his current practice location is 635 Stone Ave, Paris, Texas. You can reach out to his office (for appointments etc.) via phone at (903) 785-3300.

Mark W Greenwell is licensed to practice in Texas (license number P3725) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1184681371.

Contact Information

Mark W Greenwell, MD
635 Stone Ave,
Paris, TX 75460-9342
(903) 785-3300
(903) 785-3310

Map and Direction




Physician's Profile

Full NameMark W Greenwell
GenderMale
SpecialityNephrology
Experience25 Years
Location635 Stone Ave, Paris, Texas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mark W Greenwell attended and graduated from University Of Texas Medical School At Houston in 1999
  NPI Data:
  • NPI Number: 1184681371
  • Provider Enumeration Date: 05/01/2006
  • Last Update Date: 04/20/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6800808387
  • Enrollment ID: I20120906000268

Medical Identifiers

Medical identifiers for Mark W Greenwell such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184681371NPI-NPPES
200452580 AMedicaidOK
3058059-01MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RN0300XInternal Medicine - Nephrology 29498 (Oklahoma)Secondary
207RN0300XInternal Medicine - Nephrology P3725 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Fmcna - Idabel DxIdabel, OKDialysis facility
Rcg ParisParis, TXDialysis facility
Paris Regional Medical CenterParis, TXHospital
Mccurtain Memorial HospitalIdabel, OKHospital
Christus Mother Frances Hospital Sulphur SpringsSulphur springs, TXHospital
Hunt Regional Medical CenterGreenville, TXHospital
Titus Regional Medical CenterMount pleasant, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Tyler Nephrology Associates Pa690186224224
Tyler Nephrology Associates Pa690186224224

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mark W Greenwell allows following entities to bill medicare on his behalf.
Entity NameTyler Nephrology Associates Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1942360326
PECOS PAC ID: 6901862242
Enrollment ID: O20041208000236
Entity NameHometown Clinic Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285010496
PECOS PAC ID: 3476858812
Enrollment ID: O20160224000179

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mark W Greenwell is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mark W Greenwell, MD
1133 Medical Dr,
Tyler, TX 75701-2130

Ph: (903) 595-5486
Mark W Greenwell, MD
635 Stone Ave,
Paris, TX 75460-9342

Ph: (903) 785-3300

Reviews and Comments


Internal Medicine Doctors in Paris, TX

Dr. Thomas R Troutt, M.D.
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Practice Location: 927 S Collegiate Dr, Paris, TX 75460
Phone: 903-785-9898    
Dr. Alefia A Tapia, MD
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Practice Location: 1800 Farm Road 195, Paris, TX 75462
Phone: 903-739-7920    Fax: 903-739-7925
Syed J Mahdi, MD
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Practice Location: 1055 Clarksville St, Ste 185, Paris, TX 75460
Phone: 903-739-7461    Fax: 903-739-7935
Dr. Paul Thomas Jackson Jr., MD
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Medicare: Accepting Medicare Assignments
Practice Location: 4550 Lamar Ave, Suite 200, Paris, TX 75462
Phone: 903-739-2888    Fax: 903-739-9643
Khalid Shafiq, MD, FACC, FSCAI
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Medicare: Accepting Medicare Assignments
Practice Location: 1775 Farm Road 195, Paris, TX 75462
Phone: 903-739-2700    Fax: 903-784-1749
Dr. Sucharu Prakash, MD
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 3550 Ne Loop 286, Paris, TX 75460
Phone: 903-785-0031    Fax: 903-784-6755

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.