Dr. David Zenk, DO
- Medicare services, 2024
- 1,047
- Medicare patients, 2024
- 229
- Part D claims, 2024
- 6,325
- Hospital affiliations
- 6
- Industry payments
- $152
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zenk'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. David Zenk is an internist in Saint Louis, Missouri
Dr. Zenk practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Zenk's NPI, 1194164509, was assigned on June 19, 2013. Dr. Zenk graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2013. Dr. Zenk holds Missouri license 2013018898.
- NPI
- 1194164509NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224258728
- NPI enumeration date
- June 19, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Zenk practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Zenk's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Dr. David Zenk is affiliated with 11 sites of care and 3 medical groups
Dr. Zenk's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dr. Zenk is also affiliated with Mercy Hospital South. The medical group on file is Mercy Clinic East Communities. Dmand AI also links Dr. Zenk to 4 more hospitals, 3 group practices and clinics, 2 medical groups, 1 home health agency and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Zenk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zenk practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +10 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mercy and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David Zenk is one of 2,114 internists in Missouri
Internal medicine is Dr. Zenk's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Zenk is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Zenk
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. David Zenk billed Medicare for 1,047 services in 2024
CMS data shows 1,047 Medicare services from Dr. Zenk across 10 procedure codes in 2024, for 229 Medicare patients. Medicare paid $79,777 for them. Every service was in an office.
Dr. Zenk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4812024: 4448%
- Other services
- 2023: 3032024: 44146%
- Tests and treatments
- 2023: 1732024: 1626%
Dr. Zenk compared with the Missouri median for internists, 2024
- Dr. Zenk
- Missouri median
- Medicare services
- 1,047vs 53098% above
- Medicare patients
- 229vs 2119% above
- Part D claims
- 5,672vs 32517.5 times
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Zenk's most billed Medicare procedure codes, 2024
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. Zenk?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zenk and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Zenk treated 229 Medicare patients in 2024, average age 72
CMS counts 229 Medicare patients who saw Dr. Zenk in 2024. The largest group is 65 to 74, with 121 patients. 75% of them have high cholesterol, and 68% have high blood pressure. Their average risk score is 1.21, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Zenk's median patient age at 56, with 43% women.
Dr. Zenk's Medicare patients by age, 2024
Dr. Zenk's Medicare patients by sex, 2024
- Women10445%
- Men12555%
Chronic conditions among Dr. Zenk's Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis41%
- Anxiety31%
- Ischemic heart disease29%
- Mood disorders29%
- Depression28%
- Chronic kidney disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zenk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Zenk wrote 6,325 Medicare Part D claims in 2024
In 2024, Dr. Zenk wrote 6,325 Medicare Part D claims for 551 patients. 88% of them were for generic drugs. CMS names the drug for 5,672 of them, across 103 drugs with 11 or more claims each, at $405,078 in total drug cost. In 2023, CMS named 5,511 claims across 106 drugs.
Dr. Zenk's Part D claims by kind of drug, 2024
- Generic5,538 claims88%
- Brand-name757 claims12%
- Other30 claims0%
Dr. Zenk's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Zenk's Part D claims, 2024
- Opioids6%371 of 6,325 claims
- Antibiotics1%64 of 6,325 claims
- Antipsychotics, patients 65 and over0%27 of 6,325 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5,5112024: 5,6723%
Drugs named by CMS: 103 in 2024, 106 in 2023.
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
Dr. David Zenk offers telehealth to Medicare patients
Dr. Zenk accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Zenk as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David Zenk received $152 in industry payments from 2022 to 2025
CMS Open Payments shows 8 general payments to Dr. Zenk from 6 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $40.
General payments to Dr. Zenk by program year, 2022 to 2025
Companies that paid Dr. Zenk the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Zenk graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Dr. Zenk graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Zenk'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. David Zenk
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. David Zenk's NPI number?
Dr. David Zenk's NPI number is 1194164509. It was assigned on June 19, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. David Zenk?
Dr. David Zenk is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David Zenk practice?
Dr. Zenk practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Zenk's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Zenk to 4 hospitals, 3 group practices and clinics, 2 medical groups, 1 home health agency and 1 hospice.
What is Dr. David Zenk's office phone number?
The practice phone on file for Dr. Zenk is (314) 251-6000.
What is Dr. David Zenk's medical license number?
Dr. Zenk holds Missouri license 2013018898.
Which hospitals is Dr. David Zenk affiliated with?
Dr. Zenk practices at Mercy Hospital St. Louis in Saint Louis, Missouri. Dr. Zenk is also affiliated with Mercy Hospital South. Dmand AI links Dr. Zenk to 4 more hospitals.
What medical group is Dr. David Zenk part of?
Dr. Zenk is linked to Mercy Clinic East Communities. Dmand AI links Dr. Zenk to 2 more medical groups.
Does Dr. David Zenk accept Medicare?
Yes. CMS data shows Dr. Zenk billed Medicare for 1,047 services in 2024, and Dr. Zenk accepts Medicare assignment.
Does Dr. David Zenk offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Zenk as offering telehealth services.
How many Medicare patients does Dr. David Zenk see?
CMS counts 229 Medicare patients who saw Dr. Zenk in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. David Zenk bill to Medicare?
In 2024, Dr. Zenk's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and medicare service (G2211).
Where did Dr. David Zenk go to medical school?
Dr. Zenk graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2013.
What drugs does Dr. David Zenk prescribe most?
In 2024 Medicare Part D data, Dr. Zenk's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Levothyroxine Sodium.
Has Dr. David Zenk received payments from drug or device companies?
CMS Open Payments shows $152 in general payments to Dr. Zenk from 6 companies from 2022 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. David Zenk been practicing?
Dr. Zenk graduated from medical school in 2013, 13 years ago.
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