Dr. Craig A. Ennis, MD
- Medicare services, 2024
- 1,369
- Medicare patients, 2024
- 751
- Part D claims, 2024
- 1,930
- Hospital affiliations
- 2
- Industry payments
- $8,789
- Practice address
- 651 Dunlop Lane, Clarksville, TN 37040
- Practice phone
- Call (931) 502-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Ennis' 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. Craig A. Ennis is a gastroenterologist in Clarksville, Tennessee
Dr. Ennis practices at Vanderbilt Clarksville Hospital in Clarksville, Tennessee, part of Vanderbilt University Medical Center.
Dr. Ennis' NPI, 1295742120, was assigned on August 2, 2006. Dr. Ennis graduated from University of California, San Diego School of Medicine in 1990. Dr. Ennis holds Tennessee license 54629.
- NPI
- 1295742120NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769546605
- NPI enumeration date
- August 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (931) 502-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Craig A. Ennis practices at Vanderbilt Clarksville Hospital in Clarksville, Tennessee
Dr. Ennis' primary practice is Vanderbilt Clarksville Hospital, at 651 Dunlop Lane, Clarksville, TN 37040 in Montgomery County. The practice phone is (931) 502-1000.
- Vanderbilt Clarksville Hospital651 Dunlop Lane, Clarksville, TN 37040 · Montgomery CountyPhone(931) 502-1000
Source: Dmand AI Affiliation Data
Dr. Craig A. Ennis is affiliated with 4 sites of care and 1 medical group
Dr. Ennis' primary practice is Vanderbilt Clarksville Hospital in Clarksville, Tennessee, part of Vanderbilt University Medical Center. Dr. Ennis is also affiliated with Vanderbilt University Medical Center. The medical group on file is Vanderbilt Physician Services Clarksville. Dmand AI also links Dr. Ennis to 1 more group practice or clinic and 1 therapy and rehab clinic, 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. Craig A. Ennis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ennis practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vanderbilt Clarksville Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Craig A. Ennis is one of 331 gastroenterologists in Tennessee
Gastroenterology is Dr. Ennis' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Ennis' licenses on file in 2 states: Tennessee and California.
Specialties and state licenses
- Gastroenterology, TennesseePrimary
- California license
Gastroenterologists near Dr. Ennis
Counts of gastroenterologists 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. Craig A. Ennis billed Medicare for 1,369 services in 2024
CMS data shows 1,369 Medicare services from Dr. Ennis across 19 procedure codes in 2024, for 751 Medicare patients. Medicare paid $125,697 for them.
Dr. Ennis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 8012024: 70112%
- Office and hospital visits
- 2023: 6672024: 6217%
- Other services
- 2023: 02024: 47
Where Dr. Ennis' Medicare services took place, 2024
- In an office41330%
- In a facility95670%
Dr. Ennis compared with the Tennessee median for gastroenterologists, 2024
- Dr. Ennis
- Tennessee median
- Medicare services
- 1,369vs 6452.1 times
- Medicare patients
- 751vs 37799% above
- Part D claims
- 1,774vs 5963.0 times
Medians across 330 gastroenterologists in Tennessee with Dmand AI profiles that report each measure.
Dr. Ennis' 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ennis and other gastroenterologists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Craig A. Ennis treated 751 Medicare patients in 2024, average age 72
CMS counts 751 Medicare patients who saw Dr. Ennis in 2024. The largest group is 65 to 74, with 403 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ennis' median patient age at 67, with 59% women.
Dr. Ennis' Medicare patients by age, 2024
Dr. Ennis' Medicare patients by sex, 2024
- Women43258%
- Men31942%
Chronic conditions among Dr. Ennis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes36%
- Ischemic heart disease30%
- Anxiety28%
- Chronic kidney disease28%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ennis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Craig A. Ennis wrote 1,930 Medicare Part D claims in 2024
In 2024, Dr. Ennis wrote 1,930 Medicare Part D claims for 432 patients. 92% of them were for generic drugs. CMS names the drug for 1,774 of them, across 21 drugs with 11 or more claims each, at $580,701 in total drug cost. In 2023, CMS named 1,690 claims across 20 drugs.
Dr. Ennis' Part D claims by kind of drug, 2024
- Generic1,770 claims92%
- Brand-name160 claims8%
Dr. Ennis' 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. Ennis' Part D claims, 2024
- Antibiotics1%23 of 1,930 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: 1,6902024: 1,7745%
Drugs named by CMS: 21 in 2024, 20 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. Craig A. Ennis ranks in the 98th percentile for colonoscopy in Medicare
Dr. Ennis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 331 procedures of colonoscopy by Dr. Ennis, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Ennis ranks in Medicare procedure volume
- Colonoscopy
- 98th percentile331 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 93rd percentile251 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Craig A. Ennis received $8,789 in industry payments from 2016 to 2025
CMS Open Payments shows 503 general payments to Dr. Ennis from 37 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 89% of the total. Abbvie Inc. paid the most, $1,670.
General payments to Dr. Ennis by program year, 2016 to 2025
General payments to Dr. Ennis by kind, 2016 to 2025
- Food and beverage$7,86289%
- Travel and lodging$87910%
- Education$481%
Companies that paid Dr. Ennis the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Craig A. Ennis graduated from University of California, San Diego School of Medicine
Dr. Ennis graduated from University of California, San Diego School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Craig A. Ennis'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)Doctors and Clinicians Utilization Data (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. Craig A. Ennis
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. Craig A. Ennis' NPI number?
Dr. Craig A. Ennis' NPI number is 1295742120. It was assigned on August 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Craig A. Ennis?
Dr. Craig A. Ennis is a gastroenterologist in Clarksville, Tennessee. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Craig A. Ennis practice?
Dr. Ennis practices at 651 Dunlop Lane, Clarksville, TN 37040. Dr. Ennis' primary practice is Vanderbilt Clarksville Hospital in Clarksville, Tennessee, part of Vanderbilt University Medical Center. Dmand AI also links Dr. Ennis to 1 group practice or clinic and 1 therapy and rehab clinic.
What is Dr. Craig A. Ennis' office phone number?
The practice phone on file for Dr. Ennis is (931) 502-1000.
What is Dr. Craig A. Ennis' medical license number?
Dr. Ennis holds Tennessee license 54629, one of the licenses on file in 2 states.
Which states has Dr. Craig A. Ennis been licensed in?
Dmand AI has state licenses on file for Dr. Ennis in Tennessee and California.
Which hospitals is Dr. Craig A. Ennis affiliated with?
Dr. Ennis practices at Vanderbilt Clarksville Hospital in Clarksville, Tennessee. Dr. Ennis is also affiliated with Vanderbilt University Medical Center.
What medical group is Dr. Craig A. Ennis part of?
Dr. Ennis is linked to Vanderbilt Physician Services Clarksville.
Does Dr. Craig A. Ennis accept Medicare?
Yes. CMS data shows Dr. Ennis billed Medicare for 1,369 services in 2024, and Dr. Ennis accepts Medicare assignment.
How many Medicare patients does Dr. Craig A. Ennis see?
CMS counts 751 Medicare patients who saw Dr. Ennis in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Craig A. Ennis bill to Medicare?
In 2024, Dr. Ennis' most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and office visit, established patient (99214).
Where did Dr. Craig A. Ennis go to medical school?
Dr. Ennis graduated from University of California, San Diego School of Medicine in 1990.
What drugs does Dr. Craig A. Ennis prescribe most?
In 2024 Medicare Part D data, Dr. Ennis' most prescribed drugs by claims were Pantoprazole Sodium, Famotidine and Esomeprazole Magnesium.
Has Dr. Craig A. Ennis received payments from drug or device companies?
CMS Open Payments shows $8,789 in general payments to Dr. Ennis from 37 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Craig A. Ennis been practicing?
Dr. Ennis graduated from medical school in 1990, 36 years ago.
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