Mark R. Key, M.D.
Family Medicine Physician · Lubbock, TX
Mark R. Key, M.D. is a family medicine physician with a practice address in Lubbock, Texas, and NPI 1861684441, issued on Aug 16, 2007. Check the license (Texas N1362, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark R. Key
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- N1362 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5512 114TH St, Lubbock, TX 79424
- Phone
- (806) 288-1075
- Enumerated
- Aug 16, 2007
- Record last updated
- Dec 15, 2025
- Medicare enrollment
- Enrolled (PECOS I20090402000093); accepts Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 5512 114TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Sprys, D.O.Family Medicine Physician1679709893
Verify Mark R. Key in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N1362Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average family medicine physician in 2024
12,297 Medicare Part D claims for 678 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 373 claims were for opioids.
Most prescribed
- Levothyroxine Sodium563 claims
- Metformin Hcl346 claims
- Lisinopril321 claims
- Amlodipine Besylate317 claims
- Pantoprazole Sodium298 claims
- Atorvastatin Calcium278 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: $157.40
9 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 55,478 providers of this specialty with any payment received $902.55 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 2 group practices
- Dawson County Hospital DistrictLamesa, TX
- Precision Longevity And Family MedicineLubbock, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark R. Key among 11,119 family medicine physician records in Texas
Mark R. Key, M.D. is one of 11,119 family medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2007 · median 2004 among the 7,095 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
170 family medicine physician records list a practice address in Lubbock
They are 170 of the 5,735 NPPES records with a practice address in Lubbock, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Lubbock → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Charles Addington, DOLubbock, TX 794241508837790
- Shen Chen, MDLubbock, TX 794241508820820
- Raymond Collier, MDLubbock, TX 794241710940408
- Steven Crow, MDLubbock, TX 794241740244078
- Stephen Dalton, DOLubbock, TX 794241396748554
- Joseph Dixon, M.D.Lubbock, TX 794241891784641
- Samuel HaleLubbock, TX 794241851369185
- Patrick Hanford, DOLubbock, TX 794241669444592
Common questions
What is Mark R. Key, M.D.'s NPI number?
Mark R. Key, M.D.'s National Provider Identifier (NPI) is 1861684441, issued on Aug 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark R. Key, M.D. located?
The NPPES record lists a practice address at 5512 114TH St, Lubbock, TX, 79424. Phone: (806) 288-1075. Providers update this record themselves, so call before visiting.
How can I verify Mark R. Key, M.D.'s license?
NPPES lists Texas license number N1362, 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 R. Key, M.D. prescribe under Medicare Part D?
In 2024, Mark R. Key, M.D. had 12,297 Medicare Part D claims for 678 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.