Mark N. Klein, MD
Nephrology Physician · Flowood, MS
Mark N. Klein, MD is a nephrology physician with a practice address in Flowood, Mississippi, and NPI 1376628529, issued on Oct 26, 2006. Check the license (Mississippi 15985, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Mark N. Klein
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 15985 MS
Self-reported in NPPES; status is on the state search - Practice location
- 102 Riverview Dr Ste A, Flowood, MS 39232
- Phone
- (601) 981-1610
- Enumerated
- Oct 26, 2006
- Record last updated
- May 19, 2026
- Fax
- (601) 366-2887
- Medicaid ID
- 000125529 MS
- Medicare enrollment
- Enrolled (PECOS I20070426000355); accepts Medicare assignment
- Medical or professional school
- University Of Mississippi School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 110 in Mississippi → Look up another NPI →
Also registered at 102 Riverview Dr Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katlyn Amason, NPGerontology Nurse Practitioner1144854498
- Uma Mahesh Avula, MDNephrology Physician1942813506
- Daphne Bilbrew, MDNephrology Physician1194809822
- Dixie Brown, CFNPFamily Nurse Practitioner1083813240
- Carmen Carr, FNP-CFamily Nurse Practitioner1679934624
- Lee Ferguson, M.D.Nephrology Physician1114239423
Verify Mark N. Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 15985Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average nephrology physician in 2024
1,796 Medicare Part D claims for 198 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Furosemide123 claims
- Losartan Potassium120 claims
- Auryxia111 claims
- Sevelamer Carbonate103 claims
- Carvedilol77 claims
- Amlodipine Besylate76 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: $466.45
20 payments; by number, the most common kind was food and beverage; the largest payer was Baxter Healthcare. 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
- Central Nephrology Clinic PLLCFlowood, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark N. Klein among 110 nephrology physician records in Mississippi
Mark N. Klein, MD is one of 110 nephrology physician records with a practice address in Mississippi. 80% 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, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1997 · median 1999 among the 81 with a school on file
- Record last updated2026 · 61% 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 Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 nephrology physician records list a practice address in Flowood
They are 13 of the 972 NPPES records with a practice address in Flowood, and 110 nephrology physician records in Mississippi.
All 110 in Mississippi → Every provider in Flowood → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Mohit Ahuja, M.D.Flowood, MS 392321134339286
- Uma Mahesh Avula, MDFlowood, MS 392321942813506
- Daphne Bilbrew, MDFlowood, MS 392321194809822
- Lee Ferguson, M.D.Flowood, MS 392321114239423
- Lindsey Norris, M.D.Flowood, MS 392321306166970
- Ami Patel, MDFlowood, MS 392321326123423
- Francis Phillippi, MDFlowood, MS 392321871678029
- Marcelo Ruvinsky, MDFlowood, MS 392321093883662
Common questions
What is Mark N. Klein, MD's NPI number?
Mark N. Klein, MD's National Provider Identifier (NPI) is 1376628529, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark N. Klein, MD located?
The NPPES record lists a practice address at 102 Riverview Dr Ste A, Flowood, MS, 39232. Phone: (601) 981-1610. Providers update this record themselves, so call before visiting.
How can I verify Mark N. Klein, MD's license?
NPPES lists Mississippi license number 15985, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark N. Klein, MD prescribe under Medicare Part D?
In 2024, Mark N. Klein, MD had 1,796 Medicare Part D claims for 198 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.