Mark R. Klein, DO
Family Medicine Physician · Gainesville, TX
Mark R. Klein, DO is a family medicine physician with a practice address in Gainesville, Texas, and NPI 1982686390, issued on Nov 19, 2005. Check the license (Texas K5586, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark R. Klein
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- K5586 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1625 N Grand Ave, Gainesville, TX 76240
- Phone
- (940) 665-9863
- Enumerated
- Nov 19, 2005
- Record last updated
- Nov 21, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (940) 668-9863
- Medicaid ID
- 112013101 TX
- Medicare enrollment
- Enrolled (PECOS I20080808000670); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 1625 N Grand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erin Erbskorn, NPFamily Nurse Practitioner1194495390
- Mark Gibbs, MDFamily Medicine Physician1619959004
- Robert McLeroy, MDFamily Medicine Physician1356320147
- Mickal Voglesong, RNGeneral Practice Registered Nurse1952221707
Verify Mark R. Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K5586Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average family medicine physician in 2024
9,580 Medicare Part D claims for 549 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 92 claims were for opioids.
Most prescribed
- Atorvastatin Calcium588 claims
- Levothyroxine Sodium527 claims
- Lisinopril415 claims
- Rosuvastatin Calcium411 claims
- Gabapentin279 claims
- Pravastatin Sodium244 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: $790.22
42 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Mark R. Klein among 11,119 family medicine physician records in Texas
Mark R. Klein, DO 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1997 · median 2004 among the 7,095 with a school on file
- Record last updated2007 · 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).
8 family medicine physician records list a practice address in Gainesville
They are 8 of the 213 NPPES records with a practice address in Gainesville, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Gainesville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mark Gibbs, MDGainesville, TX 762401619959004
- Eugene Herzog, DOGainesville, TX 762401215039433
- Robert McLeroy, MDGainesville, TX 762401356320147
- Elizabeth Newman, DOGainesville, TX 762401518457035
- Larry Sears, M.D.Gainesville, TX 762401740395391
- Virgil Sears, M.D.Gainesville, TX 762401699880344
- Albert Sholakh, MDGainesville, TX 762401538454707
- Brandon Atkinson, D.O.Fort Worth, TX 762441619979614
Common questions
What is Mark R. Klein, DO's NPI number?
Mark R. Klein, DO's National Provider Identifier (NPI) is 1982686390, issued on Nov 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark R. Klein, DO located?
The NPPES record lists a practice address at 1625 N Grand Ave, Gainesville, TX, 76240. Phone: (940) 665-9863. Providers update this record themselves, so call before visiting.
How can I verify Mark R. Klein, DO's license?
NPPES lists Texas license number K5586, 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. Klein, DO prescribe under Medicare Part D?
In 2024, Mark R. Klein, DO had 9,580 Medicare Part D claims for 549 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.