Geoffrey J. Flattmann, MD
Specialist · Natchez, MS
Geoffrey J. Flattmann, MD is a specialist with a practice address in Natchez, Mississippi, and NPI 1801845136, issued on May 5, 2006. Check the license (Mississippi 16771, as entered in NPPES) with the Mississippi board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Geoffrey J. Flattmann
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- 16771 MS
Self-reported in NPPES; status is on the state search - Practice location
- 142 Jeff Davis Blvd, Natchez, MS 39120
- Phone
- (601) 445-8667
- Enumerated
- May 5, 2006
- Record last updated
- Feb 9, 2022
- Fax
- (601) 445-8767
- Medicaid IDs
- 1684147 LA
00122080 MS - Medicare enrollment
- Enrolled (PECOS I20060203000366); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 1995
- Entity
- Type 1 · individual
8 nearest specialist records → All 220 in Mississippi → Look up another NPI →
Verify Geoffrey J. Flattmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Mississippi board licenses this profession
Search for license 16771Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average specialist in 2024
272 Medicare Part D claims for 177 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 204 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen117 claims
- Hydromorphone Hcl70 claims
- Ciprofloxacin Hcl14 claims
- Oxycodone-Acetaminophen14 claims
- Sulfamethoxazole-Trimethoprim12 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): 30.8 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).
Industry payments in 2024: $9,757.28
12 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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
- Natchez Clinic Company LLCNatchez, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geoffrey J. Flattmann among 220 specialist records in Mississippi
Geoffrey J. Flattmann, MD is one of 220 specialist records with a practice address in Mississippi. 36% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 44% newer
- In a Medicare fileYes · 36% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated1995 · median 1991 among the 60 with a school on file
- Record last updated2022 · 89% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 specialist records list a practice address in Natchez
They are 5 of the 321 NPPES records with a practice address in Natchez, and 220 specialist records in Mississippi.
All 220 in Mississippi → Every provider in Natchez → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Charles Borum, M.D.Natchez, MS 391201417042979
- Deshaun Jackson, DPTNatchez, MS 391201285990622
- Kofi Kumi, MDNatchez, MS 391201417969338
- Elizabeth Marks, DPTNatchez, MS 391201104177823
- Allison Bounds, CFY/SLPRidgeland, MS 391571376098236
- Charlotte Cox, OTRidgeland, MS 391571093174187
- Leslie Delaney, M.D.Ridgeland, MS 391571982715454
- Edward Gieger, M.D.Ridgeland, MS 391571003249202
Common questions
What is Geoffrey J. Flattmann, MD's NPI number?
Geoffrey J. Flattmann, MD's National Provider Identifier (NPI) is 1801845136, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey J. Flattmann, MD located?
The NPPES record lists a practice address at 142 Jeff Davis Blvd, Natchez, MS, 39120. Phone: (601) 445-8667. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey J. Flattmann, MD's license?
NPPES lists Mississippi license number 16771, as entered by the provider. Search the Mississippi board that licenses this profession; the NPPES record confirms identity only.
How much does Geoffrey J. Flattmann, MD prescribe under Medicare Part D?
In 2024, Geoffrey J. Flattmann, MD had 272 Medicare Part D claims for 177 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Geoffrey J. Flattmann, MD's MIPS final score?
The 2023 MIPS final score is 30.8 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.