Dr. Donald K. Hammett, MD
- Medicare services, 2020
- 1,722
- Part D claims, 2024
- 53
- Industry payments
- $1,602
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 6198 Cypress St Suite 3 Suite 3, West Monroe, LA 71291
- Practice phone
- Call (318) 397-1616
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
DONALD HAMMETT, APMC
Physician office · West Monroe, Louisiana
Find Dr. Hammett's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Donald K. Hammett is an internist in Ruston, Louisiana
Dr. Hammett practices at DONALD HAMMETT, APMC in West Monroe, Louisiana.
Dr. Hammett's NPI, 1235171554, was assigned on June 12, 2006. Dr. Hammett holds Louisiana license 014744.
- NPI
- 1235171554NPI Registry (opens in a new tab)
- NPI enumeration date
- June 12, 2006
- NPI status
- Active
- Practice phone
- (318) 397-1616
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Donald K. Hammett practices in West Monroe and Ruston
Dr. Hammett's primary practice is DONALD HAMMETT, APMC, at 6198 Cypress St Suite 3 Suite 3, West Monroe, LA 71291. The practice phone is (318) 397-1616. The NPI Registry lists Dr. Hammett's practice address as 804 N Trenton St, Ruston, LA 71270.
- DONALD HAMMETT, APMCPrimary6198 Cypress St Suite 3 Suite 3, West Monroe, LA 71291Phone(318) 397-1616
- NPI Registry address804 N Trenton St, Ruston, LA 71270 · Lincoln ParishPhone(318) 397-1616
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Donald K. Hammett is affiliated with 1 site of care
Dr. Hammett's primary practice is DONALD HAMMETT, APMC in West Monroe, Louisiana.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Donald K. Hammett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hammett practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| DONALD HAMMETT, APMC | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Donald K. Hammett is one of 1,571 internists in Louisiana
Internal medicine is Dr. Hammett's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hammett is licensed in Louisiana.
Specialties and state licenses
- Internal medicine, LouisianaPrimary
Internists near Dr. Hammett
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Donald K. Hammett billed Medicare for 1,722 services in 2020
CMS data shows 1,722 Medicare services from Dr. Hammett across 12 procedure codes in 2020. Medicare paid $93,803 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hammett's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 7772020: 7178%
- Tests and treatments
- 2019: 5062020: 5437%
- Surgery
- 2019: 4532020: 4622%
Dr. Hammett compared with the Louisiana median for internists, 2020
- Dr. Hammett
- Louisiana median
- Medicare services
- 1,722vs 4214.1 times
- Part D claims
- 13vs 40897% below
Medians across 1,561 internists in Louisiana with Dmand AI profiles that report each measure.
Dr. Hammett's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Hammett?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hammett and other internists in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Donald K. Hammett's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Hammett's median patient age at 74, with 44% women.
Dr. Hammett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women44%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Donald K. Hammett wrote 53 Medicare Part D claims in 2024
In 2024, Dr. Hammett wrote 53 Medicare Part D claims. 64% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $11,293 in total drug cost. In 2022, CMS named 14 claims across 1 drug.
Dr. Hammett's Part D claims by kind of drug, 2024
- Generic34 claims64%
- Brand-name19 claims36%
Dr. Hammett's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 142023: 137%
Drugs named by CMS: 1 in 2023, 1 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Donald K. Hammett received $1,602 in industry payments from 2016 to 2023
CMS Open Payments shows 55 general payments to Dr. Hammett from 14 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $491.
General payments to Dr. Hammett by program year, 2016 to 2023
Companies that paid Dr. Hammett the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Donald K. Hammett's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Donald K. Hammett
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Donald K. Hammett's NPI number?
Dr. Donald K. Hammett's NPI number is 1235171554. It was assigned on June 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Donald K. Hammett?
Dr. Donald K. Hammett is an internist in Ruston, Louisiana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Donald K. Hammett practice?
Dr. Hammett practices at 6198 Cypress St Suite 3 Suite 3, West Monroe, LA 71291. Dr. Hammett also practices at 804 N Trenton St, Ruston, LA 71270. Dr. Hammett's primary practice is DONALD HAMMETT, APMC in West Monroe, Louisiana.
What is Dr. Donald K. Hammett's office phone number?
The practice phone on file for Dr. Hammett is (318) 397-1616.
What is Dr. Donald K. Hammett's medical license number?
Dr. Hammett holds Louisiana license 014744.
Does Dr. Donald K. Hammett accept Medicare?
Yes. CMS data shows Dr. Hammett billed Medicare for 1,722 services in 2020.
What services does Dr. Donald K. Hammett bill to Medicare?
In 2020, Dr. Hammett's most billed Medicare services were office visit, established patient (99213), special service (99183) and surgery: skin and soft tissue (11042).
What drugs does Dr. Donald K. Hammett prescribe most?
In 2023 Medicare Part D data, Dr. Hammett's most prescribed drugs by claims were Trelegy Ellipta.
Has Dr. Donald K. Hammett received payments from drug or device companies?
CMS Open Payments shows $1,602 in general payments to Dr. Hammett from 14 companies from 2016 to 2023. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Donald K. Hammett been practicing?
Dr. Hammett's NPI was assigned in 2006.
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