Harmon Sidney Prosser, MD
Family Medicine Physician · Ackerman, MS
Harmon Sidney Prosser, MD is a family medicine physician with a practice address in Ackerman, Mississippi, and NPI 1073578886, issued on Apr 18, 2006. Check the license (Mississippi 09177, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Harmon Sidney Prosser
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 09177 MS
Self-reported in NPPES; status is on the state search - Practice location
- 64 N Louisville St, Ackerman, MS 39735
- Phone
- (662) 285-9050
- Enumerated
- Apr 18, 2006
- Record last updated
- Mar 10, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (662) 285-9056
- Medicaid ID
- 00115007 MS
- Medicare enrollment
- Enrolled (PECOS I20070626000210); accepts Medicare assignment
- Medical or professional school
- University Of Mississippi School Of Medicine, 1977
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,165 in Mississippi → Look up another NPI →
Verify Harmon Sidney Prosser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 09177Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average family medicine physician in 2024
2,594 Medicare Part D claims for 204 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 42 claims were for opioids.
Most prescribed
- Azithromycin136 claims
- Prednisone131 claims
- Alprazolam90 claims
- Zolpidem Tartrate90 claims
- Metoprolol Succinate83 claims
- Gabapentin82 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Choctaw Regional Medical CenterAckerman, MS · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Harmon Sidney Prosser among 1,165 family medicine physician records in Mississippi
Harmon Sidney Prosser, MD is one of 1,165 family medicine physician records with a practice address in Mississippi. 79% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 48% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1977 · median 2003 among the 748 with a school on file
- Record last updated2020 · 60% 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 Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 family medicine physician records list a practice address in Ackerman
They are 5 of the 45 NPPES records with a practice address in Ackerman, and 1,165 family medicine physician records in Mississippi.
All 1,165 in Mississippi → Every provider in Ackerman → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Shunda Garner, MDAckerman, MS 397351124017546
- Sandy Lieu, MDAckerman, MS 397351952716573
- Falan McKnight, MDAckerman, MS 397351073173514
- Prentiss Parsons, M.D.Ackerman, MS 397351821051756
- Charles McCullouch, MDBrooksville, MS 397391710964754
- Julian Brown, M. D.Aberdeen, MS 397301073578043
- Kevin Hayes, M.D.Aberdeen, MS 397301154364636
- David Booth, DOEupora, MS 397441093788523
Common questions
What is Harmon Sidney Prosser, MD's NPI number?
Harmon Sidney Prosser, MD's National Provider Identifier (NPI) is 1073578886, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Harmon Sidney Prosser, MD located?
The NPPES record lists a practice address at 64 N Louisville St, Ackerman, MS, 39735. Phone: (662) 285-9050. Providers update this record themselves, so call before visiting.
How can I verify Harmon Sidney Prosser, MD's license?
NPPES lists Mississippi license number 09177, 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 Harmon Sidney Prosser, MD prescribe under Medicare Part D?
In 2024, Harmon Sidney Prosser, MD had 2,594 Medicare Part D claims for 204 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Harmon Sidney Prosser, MD's MIPS final score?
The 2023 MIPS final score is 76.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.