Dr. Dennis L. Rainwater, MD
- Medicare services, 2024
- 2,731
- Medicare patients, 2024
- 208
- Part D claims, 2024
- 11,260
- Hospital affiliations
- 1
- Industry payments
- $4,233
- Practice address
- 6600 Nightingale Ln, Knoxville, TN 37909
- Practice phone
- Call (865) 374-5200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Covenant Medical Group
Knoxville, Tennessee
Find Dr. Rainwater'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. Dennis L. Rainwater is an internist in Knoxville, Tennessee
Dr. Rainwater practices at Covenant Medical Group in Knoxville, Tennessee.
Dr. Rainwater's NPI, 1316974678, was assigned on June 26, 2006. Dr. Rainwater graduated from East Tennessee State University Quillen College of Medicine in 1985. Dr. Rainwater holds Tennessee license MD17343.
- NPI
- 1316974678NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456386366
- NPI enumeration date
- June 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (865) 374-5200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dennis L. Rainwater practices at Covenant Medical Group in Knoxville, Tennessee
Dr. Rainwater's primary practice is Covenant Medical Group, at 6600 Nightingale Ln, Knoxville, TN 37909 in Knox County. The practice phone is (865) 374-5200.
- Covenant Medical Group6600 Nightingale Ln, Knoxville, TN 37909 · Knox CountyPhone(865) 374-5200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Dennis L. Rainwater is affiliated with 4 sites of care and 2 medical groups
Dr. Rainwater's primary practice is Covenant Medical Group in Knoxville, Tennessee. Dr. Rainwater is also affiliated with Covenant Health Morristown-Hamblen. The medical group on file is Covenant Medical Group. Dmand AI also links Dr. Rainwater to 1 more group practice or clinic, 1 home health agency and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Dennis L. Rainwater's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rainwater practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Covenant Medical Group | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dennis L. Rainwater is one of 2,427 internists in Tennessee
Internal medicine is Dr. Rainwater's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Rainwater's licenses on file in 2 states: Tennessee and Florida.
Specialties and state licenses
- Internal medicine, TennesseePrimary
- Florida license
Internists near Dr. Rainwater
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. Dennis L. Rainwater billed Medicare for 2,731 services in 2024
CMS data shows 2,731 Medicare services from Dr. Rainwater across 28 procedure codes in 2024, for 208 Medicare patients. Medicare paid $74,698 for them. Every service was in an office.
Dr. Rainwater's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,0972024: 94314%
- Office and hospital visits
- 2023: 5822024: 6156%
- Other services
- 2023: 542024: 6021015%
- Drugs given in the office
- 2023: 1322024: 25291%
- Surgery
- 2023: 2792024: 24313%
- Tests and treatments
- 2023: 342024: 6179%
- Imaging
- 2023: 02024: 15
Dr. Rainwater compared with the Tennessee median for internists, 2024
- Dr. Rainwater
- Tennessee median
- Medicare services
- 2,731vs 6714.1 times
- Medicare patients
- 208vs 2226% below
- Part D claims
- 10,468vs 33431.3 times
Medians across 2,462 internists in Tennessee with Dmand AI profiles that report each measure.
Dr. Rainwater'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. Rainwater?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Rainwater and other internists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dennis L. Rainwater treated 208 Medicare patients in 2024, average age 73
CMS counts 208 Medicare patients who saw Dr. Rainwater in 2024. The largest group is 65 to 74, with 97 patients. 75% of them have high blood pressure, and 62% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rainwater's median patient age at 61, with 53% women.
Dr. Rainwater's Medicare patients by age, 2024
Dr. Rainwater's Medicare patients by sex, 2024
- Women8641%
- Men12259%
Chronic conditions among Dr. Rainwater's Medicare patients, 2024
- High blood pressure75%
- High cholesterol62%
- Arthritis44%
- Diabetes33%
- Ischemic heart disease25%
- COPD22%
- Mood disorders21%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rainwater's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dennis L. Rainwater wrote 11,260 Medicare Part D claims in 2024
In 2024, Dr. Rainwater wrote 11,260 Medicare Part D claims for 603 patients. 87% of them were for generic drugs. CMS names the drug for 10,468 of them, across 155 drugs with 11 or more claims each, at $699,311 in total drug cost. In 2023, CMS named 7,300 claims across 130 drugs.
Dr. Rainwater's Part D claims by kind of drug, 2024
- Generic9,761 claims87%
- Brand-name1,385 claims12%
- Other114 claims1%
Dr. Rainwater'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. Rainwater's Part D claims, 2024
- Opioids2%263 of 11,260 claims
- Antibiotics3%356 of 11,260 claims
- Antipsychotics, patients 65 and over0%40 of 11,260 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: 7,3002024: 10,46843%
Drugs named by CMS: 155 in 2024, 130 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
How Dr. Dennis L. Rainwater takes part in Medicare
Dr. Rainwater 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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Dr. Dennis L. Rainwater received $4,233 in industry payments from 2016 to 2024
CMS Open Payments shows 269 general payments to Dr. Rainwater from 23 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 94% of the total. Novo Nordisk Inc paid the most, $745.
General payments to Dr. Rainwater by program year, 2016 to 2024
General payments to Dr. Rainwater by kind, 2016 to 2024
- Food and beverage$3,98794%
- Education$2466%
Companies that paid Dr. Rainwater the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Dennis L. Rainwater graduated from East Tennessee State University Quillen College of Medicine
Dr. Rainwater graduated from East Tennessee State University Quillen College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Dennis L. Rainwater'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 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. Dennis L. Rainwater
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. Dennis L. Rainwater's NPI number?
Dr. Dennis L. Rainwater's NPI number is 1316974678. It was assigned on June 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Dennis L. Rainwater?
Dr. Dennis L. Rainwater is an internist in Knoxville, Tennessee. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Dennis L. Rainwater practice?
Dr. Rainwater practices at 6600 Nightingale Ln, Knoxville, TN 37909. Dr. Rainwater's primary practice is Covenant Medical Group in Knoxville, Tennessee. Dmand AI also links Dr. Rainwater to 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Dr. Dennis L. Rainwater's office phone number?
The practice phone on file for Dr. Rainwater is (865) 374-5200.
What is Dr. Dennis L. Rainwater's medical license number?
Dr. Rainwater holds Tennessee license MD17343, one of the licenses on file in 2 states.
Which states has Dr. Dennis L. Rainwater been licensed in?
Dmand AI has state licenses on file for Dr. Rainwater in Tennessee and Florida.
Which hospitals is Dr. Dennis L. Rainwater affiliated with?
Dr. Rainwater is affiliated with Covenant Health Morristown-Hamblen.
What medical group is Dr. Dennis L. Rainwater part of?
Dr. Rainwater is linked to Covenant Medical Group. Dmand AI links Dr. Rainwater to 1 more medical group.
Does Dr. Dennis L. Rainwater accept Medicare?
Yes. CMS data shows Dr. Rainwater billed Medicare for 2,731 services in 2024, and Dr. Rainwater accepts Medicare assignment.
How many Medicare patients does Dr. Dennis L. Rainwater see?
CMS counts 208 Medicare patients who saw Dr. Rainwater in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Dennis L. Rainwater bill to Medicare?
In 2024, Dr. Rainwater's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and injected or infused drug (J1100).
Where did Dr. Dennis L. Rainwater go to medical school?
Dr. Rainwater graduated from East Tennessee State University Quillen College of Medicine in 1985.
What drugs does Dr. Dennis L. Rainwater prescribe most?
In 2024 Medicare Part D data, Dr. Rainwater's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Omeprazole.
Has Dr. Dennis L. Rainwater received payments from drug or device companies?
CMS Open Payments shows $4,233 in general payments to Dr. Rainwater from 23 companies from 2016 to 2024. The largest total came from Novo Nordisk Inc.
How long has Dr. Dennis L. Rainwater been practicing?
Dr. Rainwater graduated from medical school in 1985, 41 years ago.
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