NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1295742120 MD
Verify on CMS → Craig Ennis, MD
Gastroenterology Physician in Clarksville, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,061 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 432 beneficiaries · Gastroenterology Physician avg: 848
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$591.82
39 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Craig Ennis, MD filed 1,930 Medicare Part D claims in 2024 as a Gastroenterology Physician in Clarksville, Tennessee, prescribing 92% generic.
- 2K
- Part D claims, 2024
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥83rd
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Craig Ennis, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1295742120), first enumerated 08/02/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,930 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$591.82 in reported industry payments (39 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1295742120 · Gastroenterology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1295742120
- ENUM-LEGACY 2006
- TAX-MID 17K Gastroenterology Physician
- RX-MID 1,930
- BOOK-THIN 330 in Tennessee
- PHOTO-ENUM Glenn Eisen · 2006
Craig Ennis, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,930 ≥ 83rd percentile 83% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Craig Ennis, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Craig Ennis, MD?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
1,930 128% vs specialty avg
Specialty distribution in Tennessee
How Gastroenterology Physician compares to other specialties among Tennessee providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1295742120 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/02/2006 |
Hospital and facility affiliations
Facilities where Craig Ennis, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Clarksville Physician Services, LLC
Clarksville, TN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Craig Ennis, MD. Source: openpaymentsdata.cms.gov.
Total received
$592
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Craig Ennis, MD - brand share 8.0%
Gastroenterology Physician average
8% brand-name claims vs 92% generic, on 1,930 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
1,930
Total Claims
$894K
Total Drug Cost
432
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,818.833
- Total Day Supply
- 112,603
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $826K
- Generic Drug Cost
- $68K
- Antibiotic Claims
- 23
Patient Demographics
- Average Patient Age
- 69.0 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 72% female / 28% male
- Age Distribution
- <65: 101, 65-74: 194, 75-84: 119, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Craig Ennis, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Pantoprazole Sodium
Pantoprazole Sodium
488 claims
- Famotidine
Famotidine
409 claims
- Esomeprazole Magne…
Esomeprazole Magnesium
292 claims
- Sucralfate 99
Sucralfate
99 claims
- Dicyclomine Hcl 77
Dicyclomine Hcl
77 claims
- Ondansetron Odt 54
Ondansetron Odt
54 claims
- Amitriptyline Hcl 40
Amitriptyline Hcl
40 claims
- Omeprazole 38
Omeprazole
38 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 488 |
| Famotidine | 409 |
| Esomeprazole Magnesium | 292 |
| Sucralfate | 99 |
| Dicyclomine Hcl | 77 |
| Ondansetron Odt Ondansetron | 54 |
| Amitriptyline Hcl | 40 |
| Omeprazole | 38 |
| Diphenoxylate-Atropine Diphenoxylate Hcl/Atropine | 37 |
| Azathioprine | 31 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Craig Ennis, MD fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
Craig Ennis, MD's 1,930 claims are above the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Ennis, both outside Tennessee so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Ennis.
One of 330 Gastroenterology Physician providers enrolled in Tennessee, 5 are shown here.
Dr. Ahmad Abu-Heija
M.D.
Oak Ridge, TN
Dr. Linas Adams
MD
Morristown, TN
Dr. Uchenna Agbim
MD
Memphis, TN
Dr. Nazneen Ahmed
M.D.
Memphis, TN
Dr. Abdullah Al-Rashdan
M.D.
Memphis, TN
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Craig Ennis, MD's specialty? ▼
Craig Ennis, MD specializes in Gastroenterology Physician and practices in Clarksville, Tennessee. Credentials: MD.
How much does Craig Ennis, MD prescribe under Medicare Part D? ▼
In 2024, Craig Ennis, MD wrote 1,930 Medicare Part D claims totaling $894K in drug costs for 432 beneficiaries.
Where is Craig Ennis, MD located? ▼
Craig Ennis, MD is located at 647 DUNLOP LN STE 210, Clarksville, TN, 37040. Phone: (931) 502-3810.
What is Craig Ennis, MD's NPI number? ▼
Craig Ennis, MD's National Provider Identifier (NPI) is 1295742120, issued on 08/02/2006.
Does Craig Ennis, MD prescribe more brand-name or generic drugs? ▼
Craig Ennis, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $826K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Craig Ennis, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Craig Ennis, MD's most frequently prescribed drugs include Pantoprazole Sodium, Famotidine, Esomeprazole Magnesium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Craig Ennis, MD accept Medicare? ▼
Craig Ennis, MD appears in CMS Medicare data with 1,930 Part D claims and 432 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Craig Ennis, MD's credentials? ▼
Craig Ennis, MD's NPI is 1295742120 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.