Harry Dayton, M. D., PH. D.
Internal Medicine Physician · Meridian, MS
Harry Dayton, M. D., PH. D. is an internal medicine physician with a practice address in Meridian, Mississippi, and NPI 1275695694, issued on Dec 14, 2006. Check the license (Mississippi 11617, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Harry Dayton
- Credential
- M. D., PH. D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 11617 MS
Self-reported in NPPES; status is on the state search - Practice location
- 905C S Frontage RD, Meridian, MS 39301
- Phone
- (601) 486-4210
- Enumerated
- Dec 14, 2006
- Record last updated
- Mar 10, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (601) 486-4219
- Medicaid ID
- 00112750 MS
- Medicare enrollment
- Enrolled (PECOS I20081006000370); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 972 in Mississippi → Look up another NPI →
Also registered at 905C S Frontage RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Onaola AdedejiFamily Medicine Physician1952155665
- Sohail Ahmed, M.D.Internal Medicine Physician1922081397
- Anna Ansley, MDStudent in an Organized Health Care Education/Training Program1386337608
- Michael Beard, MDFamily Medicine Physician1629701149
- Angela Bevill, D.O.Family Medicine Physician1801284633
- Garrett BlackFamily Medicine Physician1225829179
Verify Harry Dayton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 11617Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,618 Medicare Part D claims for 335 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Amlodipine Besylate350 claims
- Atorvastatin Calcium308 claims
- Levothyroxine Sodium272 claims
- Pantoprazole Sodium258 claims
- Meloxicam256 claims
- Potassium Chloride208 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: $137.53
8 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Medical Foundation IncMeridian, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Harry Dayton among 972 internal medicine physician records in Mississippi
Harry Dayton, M. D., PH. D. is one of 972 internal medicine physician records with a practice address in Mississippi. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 63% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1982 · median 2008 among the 585 with a school on file
- Record last updated2015 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 internal medicine physician records list a practice address in Meridian
They are 25 of the 1,291 NPPES records with a practice address in Meridian, and 972 internal medicine physician records in Mississippi.
All 972 in Mississippi → Every provider in Meridian → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard Abney, M.D.Meridian, MS 393011710986591
- Sohail Ahmed, M.D.Meridian, MS 393011922081397
- Patrick Ajiboye, MDMeridian, MS 393011205913902
- Ruba Barakat, M.D.Meridian, MS 393011104894880
- William Bell, M.D.Meridian, MS 393011104808856
- Anthony Fouts, M.D.Meridian, MS 393011568445518
- Thomas Greer, M.D.Meridian, MS 393011942287529
- Eniola Otuseso, MDMeridian, MS 393011962451757
Common questions
What is Harry Dayton, M. D., PH. D.'s NPI number?
Harry Dayton, M. D., PH. D.'s National Provider Identifier (NPI) is 1275695694, issued on Dec 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harry Dayton, M. D., PH. D. located?
The NPPES record lists a practice address at 905C S Frontage RD, Meridian, MS, 39301. Phone: (601) 486-4210. Providers update this record themselves, so call before visiting.
How can I verify Harry Dayton, M. D., PH. D.'s license?
NPPES lists Mississippi license number 11617, 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 Harry Dayton, M. D., PH. D. prescribe under Medicare Part D?
In 2024, Harry Dayton, M. D., PH. D. had 7,618 Medicare Part D claims for 335 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.