Mary J. Drenon, FNP
- Medicare patients, 2024
- 234
- Part D claims, 2024
- 2,195
- Hospital affiliations
- 2
- Industry payments
- $508
- Medical groups
- 3
- Practice address
- 2303 Us-65, Marshall, MO 65340
- Practice phone
- Call (660) 886-7800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John Fitzgibbon Memorial Hospital Inc
Marshall, Missouri
Find Mary Drenon'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.
Mary J. Drenon is a family nurse practitioner in Marshall, Missouri
Mary Drenon practices at John Fitzgibbon Memorial Hospital Inc in Marshall, Missouri.
Mary Drenon's NPI, 1790434413, was assigned on March 21, 2022. Mary Drenon holds Missouri license 2022009494.
- NPI
- 1790434413NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557749298
- NPI enumeration date
- March 21, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (660) 886-7800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary J. Drenon practices at John Fitzgibbon Memorial Hospital Inc in Marshall, Missouri
Mary Drenon's primary practice is John Fitzgibbon Memorial Hospital Inc, at 2303 Us-65, Marshall, MO 65340 in Saline County. The practice phone is (660) 886-7800.
- John Fitzgibbon Memorial Hospital Inc2303 Us-65, Marshall, MO 65340 · Saline CountyPhone(660) 886-7800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mary J. Drenon is affiliated with 5 sites of care and 3 medical groups
Mary Drenon's primary practice is John Fitzgibbon Memorial Hospital Inc in Marshall, Missouri. Mary Drenon is also affiliated with Fitzgibbon Hospital. The medical group on file is Katy Trail Community Health. Dmand AI also links Mary Drenon to 1 more hospital, 2 medical groups, 1 community health center and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mary J. Drenon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Drenon practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Fitzgibbon Memorial Hospital Inc | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary J. Drenon is one of 3,989 family nurse practitioners in Missouri
Family is Mary Drenon's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Mary Drenon is licensed in Missouri.
Specialties and state licenses
- Family nurse practitioner, MissouriPrimary
Family nurse practitioners near Mary Drenon
Counts of family nurse practitioners 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
Mary J. Drenon treated 234 Medicare patients in 2024, average age 76
CMS counts 234 Medicare patients who saw Mary Drenon in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mary Drenon's median patient age at 72, with 59% women.
Mary Drenon's Medicare patients by age, 2024
Mary Drenon's Medicare patients by sex, 2024
- Women11850%
- Men11650%
Chronic conditions among Mary Drenon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Arthritis46%
- Diabetes31%
- Mood disorders29%
- Ischemic heart disease28%
- Atrial fibrillation26%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Mary Drenon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary J. Drenon wrote 2,195 Medicare Part D claims in 2024
In 2024, Mary Drenon wrote 2,195 Medicare Part D claims for 440 patients. 88% of them were for generic drugs.
Mary Drenon's Part D claims by kind of drug, 2024
- Generic1,941 claims88%
- Brand-name and other254 claims12%
Drug classes CMS tracks in Mary Drenon's Part D claims, 2024
- Antibiotics10%225 of 2,195 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Mary J. Drenon takes part in Medicare
Mary Drenon accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Mary J. Drenon received $508 in industry payments in 2025
CMS Open Payments shows 29 general payments to Mary Drenon from 10 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $195.
Companies that paid Mary Drenon the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mary J. Drenon'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Mary J. Drenon
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mary J. Drenon's NPI number?
Mary J. Drenon's NPI number is 1790434413. It was assigned on March 21, 2022, and it is active in the NPI Registry.
What does Mary J. Drenon specialize in?
Mary J. Drenon is a family nurse practitioner in Marshall, Missouri. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Mary J. Drenon practice?
Mary Drenon practices at 2303 Us-65, Marshall, MO 65340. Mary Drenon's primary practice is John Fitzgibbon Memorial Hospital Inc in Marshall, Missouri. Dmand AI also links Mary Drenon to 1 hospital, 2 medical groups, 1 community health center and 1 group practice or clinic.
What is Mary J. Drenon's office phone number?
The practice phone on file for Mary Drenon is (660) 886-7800.
What is Mary J. Drenon's medical license number?
Mary Drenon holds Missouri license 2022009494.
Which hospitals is Mary J. Drenon affiliated with?
Mary Drenon is affiliated with Fitzgibbon Hospital. Dmand AI links Mary Drenon to 1 more hospital.
What medical group is Mary J. Drenon part of?
Mary Drenon is linked to Katy Trail Community Health. Dmand AI links Mary Drenon to 2 more medical groups.
Does Mary J. Drenon accept Medicare?
Yes. CMS lists Mary Drenon as accepting Medicare assignment.
How many Medicare patients does Mary J. Drenon see?
CMS counts 234 Medicare patients who saw Mary Drenon in 2024, with an average age of 76.
Has Mary J. Drenon received payments from drug or device companies?
CMS Open Payments shows $508 in general payments to Mary Drenon from 10 companies from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Mary J. Drenon been practicing?
Mary Drenon graduated from medical school in 2021, 5 years ago.
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