Dr. John Howard Acker, MD
- Medicare services, 2023
- 1,392
- Part D claims, 2024
- 1,651
- MIPS score, 2024
- 96
- Hospital affiliations
- 1
- Industry payments
- $6,571
- Practice address
- 8045 Roane Medical Center Drive, Harriman, TN 37748
- Practice phone
- Call (865) 316-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Acker'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. John Howard Acker is a cardiologist in Harriman, Tennessee
Dr. Acker practices at Covenant Health Roane in Harriman, Tennessee, part of Covenant Health.
Dr. Acker's NPI, 1497756241, was assigned on August 2, 2005. Dr. Acker graduated from University of Tennessee Health Science Center College of Medicine - Memphis in 1978. Dr. Acker's Tennessee license number on file is 12541.
- NPI
- 1497756241NPI Registry (opens in a new tab)
- NPI enumeration date
- August 2, 2005
- NPI status
- Active
- Practice phone
- (865) 316-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Howard Acker practices at Covenant Health Roane in Harriman, Tennessee
Dr. Acker's primary practice is Covenant Health Roane, at 8045 Roane Medical Center Drive, Harriman, TN 37748 in Roane County. The practice phone is (865) 316-1000.
- Covenant Health Roane8045 Roane Medical Center Drive, Harriman, TN 37748 · Roane CountyPhone(865) 316-1000
Source: Dmand AI Affiliation Data
Dr. John Howard Acker is affiliated with 3 sites of care and 2 medical groups
Dr. Acker's primary practice is Covenant Health Roane in Harriman, Tennessee, part of Covenant Health. The medical group on file is UT Internal Medicine - Pellissippi. Dmand AI also links Dr. Acker to 2 more group practices and clinics and 1 medical group, 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. John Howard Acker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Acker practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Covenant Health Roane | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Howard Acker is one of 424 cardiologists in Tennessee
Cardiovascular disease is Dr. Acker's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Acker is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Acker's licenses on file in 2 states: Tennessee and Alabama.
Specialties and state licenses
- Cardiovascular disease, TennesseePrimary
- Alabama license
Clinical focus
Dmand AI lists aneurysm, aortic atherosclerois, arterial blot clot /embolism, atrial fibrillation and flutter, cardiomyopathy, cerebrovascular disease, chronic hypertension and coronary artery disease among the conditions Dr. Acker treats.
Cardiologists near Dr. Acker
Counts of cardiologists 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. John Howard Acker billed Medicare for 1,392 services in 2023
CMS data shows 1,392 Medicare services from Dr. Acker across 12 procedure codes in 2023. Medicare paid $58,150 for them.
Dr. Acker's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Tests and treatments
- 2022: 6612023: 6955%
- Office and hospital visits
- 2022: 6212023: 68210%
- Lab and pathology
- 2022: 02023: 15
- Other services
- 2022: 582023: 0100%
Where Dr. Acker's Medicare services took place, 2023
- In an office1,32495%
- In a facility685%
Dr. Acker compared with the Tennessee median for cardiologists, 2023
- Dr. Acker
- Tennessee median
- Medicare services
- 1,392vs 1,79022% below
- Part D claims
- 1,427vs 1,79821% below
Medians across 428 cardiologists in Tennessee with Dmand AI profiles that report each measure.
Dr. Acker's most billed Medicare procedure codes, 2023
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. Acker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Acker and other cardiologists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Howard Acker's patients have a median age of 78
Across all payers, Dmand AI patient panel data puts Dr. Acker's median patient age at 78, with 45% women.
Dr. Acker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women45%
- Men55%
Source: Dmand AI Patient Panel Data
Dr. John Howard Acker wrote 1,651 Medicare Part D claims in 2024
In 2024, Dr. Acker wrote 1,651 Medicare Part D claims for 321 patients. 79% of them were for generic drugs. CMS names the drug for 1,427 of them, across 33 drugs with 11 or more claims each, at $318,193 in total drug cost. In 2023, CMS named 4,067 claims across 58 drugs.
Dr. Acker's Part D claims by kind of drug, 2024
- Generic1,301 claims79%
- Brand-name350 claims21%
Dr. Acker'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,0672024: 1,42765%
Drugs named by CMS: 33 in 2024, 58 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. John Howard Acker scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Acker for performance year 2024, reported through an alternative payment model (APM).
Dr. Acker's MIPS scores, performance year 2024
- 96of 100Final score
- 86.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. John Howard Acker received $6,571 in industry payments from 2016 to 2024
CMS Open Payments shows 457 general payments to Dr. Acker from 29 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 99% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $1,485.
General payments to Dr. Acker by program year, 2016 to 2024
General payments to Dr. Acker by kind, 2016 to 2024
- Food and beverage$6,52999%
- Education$421%
Companies that paid Dr. Acker 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. John Howard Acker has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Acker, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Acker
- 2012
- CMS Stage 1 EHR
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. John Howard Acker graduated from University of Tennessee Health Science Center College of Medicine - Memphis
Dr. Acker graduated from University of Tennessee Health Science Center College of Medicine - Memphis in 1978. Dr. Acker is a member of ACC.
- Medical school
- Board certified in cardiovascular disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John Howard Acker accepts plans from 7 insurance carriers
Dr. Acker is in network with 7 carriers, including Cigna, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Cigna
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
- GA State Medicaid
- KY State Medicaid
Plan types Dr. Acker accepts, by number of carriers
- Medicare5
- PPO5
- Medicaid2
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. John Howard Acker'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 Data |
| 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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. John Howard Acker
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. John Howard Acker's NPI number?
Dr. John Howard Acker's NPI number is 1497756241. It was assigned on August 2, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Howard Acker?
Dr. John Howard Acker is a cardiologist in Harriman, Tennessee. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. John Howard Acker practice?
Dr. Acker practices at 8045 Roane Medical Center Drive, Harriman, TN 37748. Dr. Acker's primary practice is Covenant Health Roane in Harriman, Tennessee, part of Covenant Health. Dmand AI also links Dr. Acker to 2 group practices and clinics and 1 medical group.
What is Dr. John Howard Acker's office phone number?
The practice phone on file for Dr. Acker is (865) 316-1000.
What is Dr. John Howard Acker's medical license number?
Dr. Acker's Tennessee license number on file is 12541, one of the licenses on file in 2 states.
Which states has Dr. John Howard Acker been licensed in?
Dmand AI has state licenses on file for Dr. Acker in Tennessee (1980 to 2025) and Alabama (1981 to 1994).
Which hospitals is Dr. John Howard Acker affiliated with?
Dr. Acker practices at Covenant Health Roane in Harriman, Tennessee.
What medical group is Dr. John Howard Acker part of?
Dr. Acker is linked to UT Internal Medicine - Pellissippi. Dmand AI links Dr. Acker to 1 more medical group.
Does Dr. John Howard Acker accept Medicare?
Yes. CMS data shows Dr. Acker billed Medicare for 1,392 services in 2023.
What is Dr. John Howard Acker's MIPS score?
Dr. Acker's MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).
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Is Dr. John Howard Acker board certified?
Yes. Dr. Acker is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. John Howard Acker bill to Medicare?
In 2023, Dr. Acker's most billed Medicare services were office visit, established patient (99213), heart test or procedure (93000) and office visit, established patient (99214).
Where did Dr. John Howard Acker go to medical school?
Dr. Acker graduated from University of Tennessee Health Science Center College of Medicine - Memphis in 1978.
What drugs does Dr. John Howard Acker prescribe most?
In 2024 Medicare Part D data, Dr. Acker's most prescribed drugs by claims were Eliquis, Metoprolol Succinate and Xarelto.
Has Dr. John Howard Acker received payments from drug or device companies?
CMS Open Payments shows $6,571 in general payments to Dr. Acker from 29 companies from 2016 to 2024. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
How long has Dr. John Howard Acker been practicing?
Dr. Acker graduated from medical school in 1978, 48 years ago.
What insurance does Dr. John Howard Acker accept?
Dr. Acker is in network with 7 carriers, including Cigna, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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